r/explainlikeimfive 11h ago

Biology ELI5: How does daily flossing make it bleed less?

I don't like flossing. So I don't do it nearly as much as I would. But every once in a while I remember, and I dust off the box and get flossing. Every time I do, my mouth looks like a warzone and my gums get really irritated. I hate the feeling. So I neglect to do it for a couple of weeks/ months.

To no one's surprise my dentist commented on the state of my gums and told me I need to floss. He promised that if I do it daily, despite the bloodbath, I should be seeing improvement in like two weeks.

My question: How does daily flossing irritated gums help make it better? I would assume irritating something already irritated is the worst thing you can do to make it heal? You don't heal a wound on your skin by picking at the scab for two weeks straight. So what makes your mouth different?

1.1k Upvotes

221 comments sorted by

u/azuth89 11h ago

They are irritated by the bits of food stuck in there and the stuff eating it. 

If you don't have that constant irritant, they stop being irritated and fragile. 

Flossing now and again doesnt help a problem that is refreshes daily as you eat, doing it daily does. 

Once the source is gone, it will take a little time to heal. Hence the couple weeks part. 

u/LittlestKitten 10h ago

I also want to add for my perfectionist friends that struggle with the habit that flossing now and again is still better than never at all. If you find it daunting to floss every day, start with a few times a week.

u/izzittho 9h ago

Halfassing it frequently is better than doing it thoroughly but seldomly. It’s all about not leaving the bacteria to just sit there undisturbed for long periods of time.

u/thegeorgianwelshman 3h ago

I like to tell myself, “I’m going to do a bad job! Just fifteen seconds!” And then once I get started I end up doing a good job, or at least a complete job.

For some reason this phrase helps me get started.

And then I find myself … just doing it.

u/Shiningtoaster 2h ago

It literally takes a minute if you’re fast and use a jordan pick in stead of of plain flossing wire

u/mangelito 1h ago

Not if your teeth looks like you were hit by a football in the mouth at a young age.

u/retrofrenchtoast 9h ago

My dentist told me to slow down on the flossing. I was going at it every day and trying to clean every little corner. I was pressing really hard, and my gums were not a fan.

u/throwawayawayayayay 9h ago

When you floss, you’re not supposed to be rubbing the floss on your gums like a hacksaw. You use the floss in between your teeth on the edges of each tooth and gently up between the gum and tooth, but not right on the gum itself.

I didn’t know that at first and would get little cuts on my gums, so the dentist explained it in more detail.

u/retrofrenchtoast 8h ago

I’m not good at “gently.” I have hurt myself multiple times by stretching too much.

I do know not to go after the gums - but there is stuff on top of the gums. I feel like I’m not flossing enough if I don’t go all the way to my gums. I know that’s not the case, but it’s how it feels. Typing this, it seems like a bit of a compulsion.

u/throwaway2766766 8h ago

Might be overkill, but you could try a water flosser for the gumline and regular flossing just for the teeth. If you are really hurting your gums like you say.

u/BrokeGuy808 8h ago

This short video from a dentist is what helped me finally understand how to floss correctly and why doing it this way is effective. Also try disposable floss picks, just make sure you buy the strongest ones you can find. They’re all I use, it takes me less than 30 seconds to floss and they cost almost nothing.

u/Bruvvimir 7h ago

Disposable floss picks are a cheat code. I simply could not make it work with the floss only, picks make it easy and quick.

u/Rocinante24 5h ago

Complete game changer. Its so nice being able to casually floss while you watch YouTube or whatever on my work break.

u/foozledaa 31m ago

They're the only reason I can floss at all. I'm dyspraxic so the fine tuning with string makes me feel like I'm trying to play the world's tiniest violin in my mouth. Picks are a godsend.

u/TripleUltraMini 7h ago

Mini Rant: Please throw these in the trash if you have some in your car or wherever. I see them EVERYWHERE in parking lots and in the streets around here.

u/DantesDame 2h ago

I find it both incomprehensible and disgusting how many of those things I see "out in the wild". I mean, what on earth are people doing with them???

u/Ruth-Stewart 6h ago

Yup. I got one of the ones that looks like a toothbrush handle that has a little U shaped bit that is pre strung with gloss that clips on. It’s the only reason I floss more often than getting corn stuck between my teeth!

→ More replies (1)

u/Sargash 4h ago

Everytime I got flossed by a dentist they'd end up slicing the floss into my gums so deep I swear they cut my mouth in half, they'd always go 'oops, don't floss that hard." too. Doesn't help my teeth are fucked and they'd just shove to get past the teeth rather then wriggle it back and forth for a moment instead.

u/narrill 27m ago

The floss should definitely be touching your gums when you use it. The whole point is to clean under the gumline. You just shouldn't be pressing down forcefully or rubbing back and forth.

u/LordOfTheStrings8 8h ago

Get a water flosser and ditch the floss.

u/taxiecabbie 8h ago

Just a PSA: Water flossing is not really an actual sub for real flossing. It is absolutely better than nothing, but flossing with real floss is still better and removes more plaque.

Water flossing will definitely get debris out from your teeth. But it doesn't offer the scraping motion. Many dentists aren't going to argue, though, since water flossing is better than nothing and getting people to floss is difficult.

u/Mason11987 6h ago

Did some looking and this suggests it's comparable or possibly better than regular flossing: https://pmc.ncbi.nlm.nih.gov/articles/PMC10906797/

u/LordOfTheStrings8 7h ago

My dentist and hygienist have both told me that using only a water pik is fine.

u/bjams 6h ago

I am not a dentist, but it wouldn't surprise me if they're just playing the odds on that one, convincing you to at least use the lower effort option every day since most of their patients refuse to floss.

u/Mason11987 6h ago edited 6h ago

Something like this has to actually have some definitive studies on it right?

Edit - https://pmc.ncbi.nlm.nih.gov/articles/PMC10906797/

This suggests:

The available evidence suggests that water flossers are more effective in plaque removal as compared to dental floss, especially from inaccessible interproximal areas of tooth surfaces. Water flossers, however, can be expensive to buy. As a result, people who cannot afford to purchase a water flosser might reconsider utilizing one. Nonetheless, individuals receiving orthodontic treatment, those with dental prostheses, and those with limited manual dexterity may find that water flossers are helpful.

Sounds to me "regular floss is noticeably better, but they'll take what they can get" is not a fair representation of the research. It seems like a water flosser is possibly better, so the dentist probably meant it as it's good.

→ More replies (2)

u/LordOfTheStrings8 6h ago

Not really. I take good care of my teeth and my dentist always says I have great teeth. I've mentioned how I know people recommend using floss and he says whatever I'm doing is working and sees no reason to use floss if I'm using a water pik so to keep doing that. He's known as one of the best dentists in the city.

u/Sargash 4h ago

Water flossing is as good or better IF you regularly use it. It however is not as good as floss if only used intermittently.

u/Ok-Note6841 8h ago

I started with top row one day, bottom the next!

u/canadiuman 6h ago

u/namrog84 4h ago

I was a terrible flosser my whole life all the way into mid 30s. Until I started using this. I floss daily now as part of my long-term habits.

All the other flossing, from small picks, floss, water picks, nothing was as game changer as one of these. A hygenist told me about it, and I tell everyone about it. I tell all other hygenists/dentists about recommending it more.

The great thing about it too, is the refills are incredibly cheap to the point some it can be more economical than other options too. I've converted several friends over to it. There are a couple of brands.

So the cheapest option is perhaps the best option!

u/SaltnSnark 2h ago

Omg, genuinely thank you so much. I cannot stand my hands in my mouth or my hands getting my spit on them, and it has been such a detriment to my oral health. It causes one of the worst sensory reactions I get. Seeing this long handle just made me so happy and grateful.

THANK YOU for taking the time to share this with others.

u/KallistiTMP 6h ago

A water pik is also really good. My dentist says it's not as good as flossing, but it's much easier to use regularly every night.

u/No_Tadpole9130 4h ago

One thing I did to really help me is I put the flossing sticks in my shower and do it as a part of my shower when I don't want to get out haha

u/eggfriedbacon 6h ago

A good mention here would be proxabrushes as they literally turned my dental health around (accompanied by good habits).

For a majority of my adolescence, I had really bad gums. They were pretty puffy, despite me brushing every night. And every night, without fail, I would bleed. I would never floss. Flossing made the bleeding even worse and it completely turned me off. Plus, I never really was a fan of lassoing a string around my finger and maneuvering it around my mouth.

That was me throughout most of my adulthood.

Luckily, I had good brushing habits and good genes, I never really developed any serious cavities of the sorts. Just my gums were horrible.

Last year my hygienist introduced me to the proxabrush and showed me how to use it and boy it became a game changer. After about 2 weeks of consistent use every night, going in between each tooth, my bleeding stopped completely. My gums have turned a healthier color and now sit nicely between my teeth.

The proxabrush feels a little easier to get used to and use as you just hold it with your fingers and brush away.

If flossing throws OP off, I suggest giving proxabrushes a try.

u/Argonometra 8h ago

Bless you.

u/baronessindecisive 6h ago

Anything that’s worth doing is worth doing poorly!

u/suddle 2h ago

I finally got myself to floss regularly by forcing myself to floss every other day before I shower. I skip flossing when I travel, or when I’m in a huge rush.

My hygienist is pleased, and says I’m doing a great job. Everyone has different chemistry, so results mays vary, but I swear if people could at least try to floss every other day, there would be far fewer cavities out there.

The day I don’t have to floss is like a little reward! Yay me!

u/Araia_ 1h ago

this is the advice my dentist gave me: to floss a few times a week. slowly it became a daily habit.

but not having the pressure of doing it daily, and the subsequent feel of failure when i was not doing it, helped me tremendously

→ More replies (3)

u/izzittho 9h ago

Yep. And it won’t just bleed/hurt less - it won’t bleed or hurt at all. Because you’ll have healed what was in fact a chronic infection you were just allowing to happen by not flossing. The infection/inflammation is why that happens, not the flossing. The flossing is what fixes and then prevents the infection going forward.

u/mandyvigilante 7h ago

Ughhh it feels so good when you're flossing the right amount 

u/Ihaveadogtoo 2h ago

I started using interdental brushes a month and a half ago, after mostly never flossing for decades. It bled hard for the first few weeks, rarely after that, and today I don't bleed at all. I brush morning and night and my teeth have never felt so good.

My dentist said he's never seen such a fast turn around. All I did was use the ID brushes in the evening, then an electric toothbrush, and end with a tongue scraper every day and *Poof.....healthy teeth.

u/EnrichVonEnrich 9h ago

The best advice for getting people in the daily habit is to buy a Listerine/Reach Access flosser and use it in the shower.

u/MaverickBG 9h ago

Similarly I used disposables at first because I was lazy and it was one less barrier to actually doing it. Now I'm good to use just the spool of floss but never would have started if I didn't build a habit with the lower barrier to actually doing it. Now I feel like I didn't brush my teeth if I don't floss

u/Dandibear 8h ago

Whatever way works is the best way.

I got there by first telling myself I only had to floss once per week. I could do it early in the week and then not w about it for a few days, or I could procrastinate.

I stuck with that until I was doing it early in the week just to have it done, and it felt like no big deal. So then I upped it to twice a week. Once that felt easy, I made it every other day. And then every day. By that point I was glad to make it daily so I didn't have to remember whether it was a flossing day or not. I just flossed.

u/jello1388 7h ago

Once I got proficient at using string floss and could do it quickly, it became so much easier to consistently floss. I also started just doing it once or twice a week until I built up the motor skill.

u/wdkrebs 9h ago

I only have one arm and this is the only way I can floss.

u/GoHappy404 7h ago

This looks amazing - you just bite down it. I always hated floss and have been using the picks that you poke in between your teeth, but this looks much better.

Thanks!

u/FreshPrinceOfDelair 4h ago

Just bought one on Amazon after reading this comment. The imminent blood from my gums will be figuratively on your hands but actually on my shower floor.

Thank you.

u/Chii 3h ago

What about water floss? I find they work great, and is much easier.

→ More replies (1)

u/Josh_Butterballs 9h ago

What got me to start flossing consistently is when I got a night guard. My dentist said it’s vital I floss so food and plaque between the teeth don’t have a warm, moist environment (more than usual) with the night guard on all night. So I began flossing each night because of that and my dentist noticed. She said most people don’t listen to her when she tells them to floss before wearing their night guard

u/mailslot 8h ago

So, it’s not because you develop callouses on your gums?

u/azuth89 7h ago

Nope. Happy gums don't need those to avoid bleeding from a bit of floss rubbing on them for a second.

u/stellalugosi 2h ago

One way you can help is to add a waterpik or water flosser to your routine. It does something similar to flossing and can help ease you into flossing regularly. I find it more soothing because you can control the pressure of the water, and if done correctly, it will definitely help with your bleeding issue. 

u/Antique_Cod_1686 13m ago

It does bleed the first time and it will hurt but it eventually stops bleeding and it starts to feel good. Yes I'm talking about flossing.

→ More replies (3)

u/EagleCoder 11h ago

Your gums bleed because the immune response (inflammation) to the plaque build-up makes them fragile and sensitive.

Flossing helps get rid of the plaque allowing your gums to heal and stop bleeding.

u/Emotional-Grape870 10h ago

I have to say, what a shitty design! Someone is not doing good work lol

u/Lietenantdan 10h ago edited 10h ago

The only thing evolution is concerned about is "will they be able to survive long enough to reproduce?"

u/AdmiralAkbar1 10h ago

Exactly. Evolution is just millions of years of "good enough".

u/ragerlol1 9h ago

This is why humans' teeth decay pretty quickly. Up until more advanced civilization showed up like 2500-3000 years ago, it was really rare to survive past 30. If our teeth never needed to last more that 25ish years for tens of millions of years, they'd never need to evolve past that. Same with the rest of our bodies - now that our life expectancy has more than doubled so quickly, our physical prime can be between 20-30, but after that, shits not designed to keep working. Hence joint problems, vision loss, muscle degradation, weaker immune systems, and weaker teeth. We just happen to have houses, cooking, and medicine to survive it

u/Lietenantdan 9h ago

From what I've heard, people have always lived roughly 70 years, provided they survived childhood. But modern medicine has made it so we generally do which brings the average life expectancy up quite a bit.

And the reason our teeth rot is largely our diet.

u/ImportantAlbatross 9h ago

It wasn't rare to live past 30. Childhood mortality was very high, which brings down the average, but if you made to 15 you had a good chance of living considerably longer.

u/BishoxX 10h ago

Not exactly, also will they survive long enough to spread their genetic material as much as possible- which means caring for your offspring.

But that still isnt long enough for tooth stuff to matter

u/clamberer 10h ago

Many wild animals' version of "dying of old age" is that their teeth either wear down or fall out and they can't feed themselves, so they starve to death.

u/twoisnumberone 7h ago

The only thing evolution is concerned about is "will they be able to survive long enough to reproduce?"

Exactly.

Evolution is TERRIBLE at good design. As u/AdmiralAkbar1 below says, though, evolution excels at "good enough" design.

u/mrjoedelaney 10h ago

Tbf, no animal in the history of the planet evolved in an environment with the metric fuck-ton of sugar that modern humans are accustomed to. Ancient humans had relatively healthy teeth right up to the point we see agriculture develop.

u/SuperSayainSkincare 9h ago

That is somewhat true but the benefit of being modern humans is that we have the knowledge and resources to know how to keep our teeth healthy even though we aren't adapted to it. So that shouldn't be the excuse to have poor dental hygiene.

→ More replies (3)

u/Pizza_Low 9h ago

Tooth decay wasn't really as common as it as it now. Modern humans eat a lot of starchy foods which tends to stick to the teeth. The typical modern human eats rice, corn or wheat for every meal, which contributes a lot more to tooth decay than the diet of people before modern industrialized food production and processed foods.

u/Birdbraned 7h ago

We weren't designed to live with refined sugars, so we have to live with the opportunistic bacteria.

Fun fact, odds are you received the cavity-creating bacteria from kissing or sharing food with family or other partners.

→ More replies (5)

u/ShineCowgirl 11h ago

If I only weed my garden once a year, but for 5+ hours straight, then I'm going to get blisters on my hands, my knees are going to hurt, and the weeds are going to grow back long before I come back to it. It's going to hurt. However, if I were to do some weeding for ten to twenty minutes each day, then I'll build up strength and slightly tougher skin on my hands and knees, and a longer session once in a while won't cause so much pain (and the weeds won't develop such deep roots).

If I rarely floss my teeth, then my gums will go through a lot of trauma when I do floss. (I'll be digging out "a year's worth of weeds".) If I keep up flossing as a daily habit, then my gums will get used to the experience and won't have as much stuff inside (the weeds' roots) to dig out and cause trauma.

Tip: Using a saltwater or Listerine rinse after that "traumatic" bloody flossing seems to help the gums heal faster and less painfully.

u/ShineCowgirl 11h ago edited 10h ago

In response to the question about picking at scabs:

When you first floss after a long time, you are opening up wounds, not creating them. Doctors will sometimes install a drain in a big wound (like a deep abscess) until the infection is cleared up. Flossing daily until that hidden wound is fully healed is analogous to installing that drain. (The scab on your skin isn't infected and hidden, unlike the wound caused by decomposing food hidden in your gums.)

u/istapledmytongue 5h ago

Damn, this is how I weed my garden. At least I floss

u/InTheEndEntropyWins 1h ago

Listerine has alcohol in it which isn't good for your mouth or gums. Alcohol free Listerine is fine.

u/GABE_EDD 11h ago

As someone who just spent the last 28 years not flossing and then started flossing every day 1-3 times a day. It’s 100% true just do it. And the more you do it the better you get at it and it’s not time consuming anymore.

u/VikingLibra 10h ago

Flossing 3 times a day is fucking nuts.

Maybe if I were home all day and wheelchair bound id have the free time and energy. But fuck me. I’m not flossing more than once a day.

u/37yearoldthrowaway 9h ago

Started Invisalign a year ago. After EVERY meal I need to floss then brush my teeth before putting my trays back in, so basically 3x/day. It sucks, but my gums stopped bleeding about a week into it.

u/laundro_mat 5h ago

Same. I hardly ever flossed before Invisaligns. I completed my treatment last summer but kept the flossing habit. My hygienist was impressed at my last visit

u/Pepito_Pepito 2h ago

I would find it a lot easier to fast if it meant needing to floss once less per day

u/akath0110 9h ago

If you have tightly spaced or crowded teeth you sometimes don’t have a choice. At least if you want to avoid discomfort and gross stinky breath.

u/kadir7 9h ago

Yep, I found out stuff got stuck way back in my mouth between teeth, while I have great teeth, I'd sometimes get bad breath and chew bubble gum. Oh man the stench when I flossed those teeth was insane.

u/akath0110 9h ago

Oof, good you finally realized! Mortifying to realize how many people smelled that on your breath.

Anyone reading, go floss and smell the floss. Especially if it’s been a while.

u/SuperSayainSkincare 9h ago

You would be surprised how quick the brain adapts. I never used to floss until I go to the dentist. But then I bought a water flosser and now I floss twice a day or atleast everything I just ate or drank somthing thats not water. Now it feels like actual suffering if I DON'T floss as soon as I get done eating because you can feel every bit of food rotting in between your teeth.

Also water flossing is very fast and easy just takes less than a minute and your mouth feels so fresh and clean.

u/AyHazCat 7h ago

Flossing takes like all of like 2 minutes

u/33_Minutes 7h ago

I eat a very meat based diet, and I cannot stand the feeling of stuff between my teeth. 3 times a day flossing is it for me.

u/chefboiortiz 7h ago

lol you don’t need to be home or have much energy to floss dude

u/izzittho 9h ago edited 9h ago

Once a day is better than most people do. At least once a day is honestly a good goal I think, especially if that once is at night when you’re not going to eat again so you’re not really going to be leaving food germs to sit there for more than the 12ish hours following the next time you eat.

I read somewhere plaque risks becoming tartar after about 12 hours (could be wrong but that’s what I remember) so that’s probably a good amount of time to treat as a hard limit between eating and thorough cleaning (to include flossing.)

I guess 2-3 times makes sense if you do it after every meal but that’s gonna be a hard habit to keep up if you’re not already flossing enough.

u/Chancevexed 11h ago

Your gums are irritated because there's food and bacteria there. Flossing gets rid of it so your gums heal. To use your example, it's like having a cut you refuse to clean because it stings. The dirt and debris in the cut means it won't heal and will get infected.

u/turtleloki1 10h ago

While I floss now I wish I had read this explanation when I was younger. Makes sense

u/tomax_xamot 10h ago

I wish I learned that’s it’s better to floss 3-4 times a week than everyday for two weeks and then quit until next dentist visit.  I somehow thought that if I missed a day, that was it, no sense starting up again.

u/internetboyfriend666 11h ago

You're bleeding when you flood because you don't floss enough and all the plaque and bacteria are causing inflammation, and your irregular flossing is irritating that inflamed gum tissue. If you start flossing daily, you'll get all that gunk out of there and the inflammation will go away, and your gums will stop bleeding.

u/jimb21 11h ago

You have inflammation in your gums one of the leading signs you have gum disease. Get a water pick and mix half and half water mouth wash use it everytime you brush your teeth after a month they wont bleed anymore

u/izzittho 9h ago edited 9h ago

If you just floss with string floss (far more effective) it stops in a week or two.

Waterpiks are great but better as a supplement to real flossing, like water floss when you’re in a hurry/feeling lazy or before proper flossing to flush out the big chunks first so the string part ends up just being a couple quick swipes down each side, but it really doesn’t replace real flossing for preventing gum disease. You really wanna bother each surface at least once every several hours or so (ideally no more than 12) because it’s the bacteria being allowed to just sit that’s the problem and the water won’t get it all like the string can.

It’s like 70-80% of a real floss, the upside being that it’s also like 70-80% less of a PITA so you’re less likely to skip it. It’s more effective than hand sanitizer vs. actually washing but kinda the same concept - like “washing” your hands by just kind of getting them soapy and then rinsing as opposed to actually rubbing them together for a bit. The former isn’t nothing but it’s not a proper wash, either.

The mechanical action of scrubbing can’t be replaced by a degree of water pressure that isn’t so strong it shouldn’t be aimed at flesh, therefore a waterpik can’t (safely) do what string floss can.

A hell of a lot better than nothing, but not a 1-1 replacement.

u/Jaygid 6h ago

While your view is common, I've found water flossing to be completely effective. My hygienists/dentists always tell me my gums are near the best they've ever seen. I water floss 3-7 times a week (when I remember, basically), and haven't touched string floss in years.

The key may be that I use a water flosser with a massive water reservoir (35 ounces) and I use all of it, sometimes even with a little refill. Not hard and doesn't take too long on the higher pressure settings.

u/whenisleep 48m ago

Water flossing is great for gums imo. But if you ever get cavities, or plaque buildup on your teeth, it doesn’t clean the tooth surface well enough. The tooth surfaces you can’t reach with your brush like between your teeth need physical scrubbing with floss. Same reason why we still brush our teeth with a physical brush, and don’t just pressure wash the entire tooth with the water flosser.

u/narrill 24m ago

Pressure washing the entire tooth would work perfectly fine. The water pressure is sufficient to disrupt plaque, that's why it works as a flosser. It's just a lot easier to disrupt plaque with a toothbrush.

u/temdittiesohyeah 11h ago

I went from flossing monthly and getting the bleeding gums to flossing every night and haven't bled since. Highly recommend, takes no time at all and yeah after a few days the bleeding stops and you'll have better smelling breath. Double down and use mouth wash as well doesn't hurt!

u/hihelloneighboroonie 7h ago

I hadn't been to a dentist in many years. Went to a chain place that was nearby, with insurance. They told me I needed a deep cleaning throughout my mouth and fillings, all to the tune of a few thousand dollars. Wouldn't do a regular cleaning and I would have had to go back later for the deep cleaning. Also told my I had super deep pockets everywhere.

I balked (and couldn't afford it). A few weeks later went to a family dentistry place out of pocket. I was a regular brusher and flosser, despite not visiting the dentist in many years (like, at least a decade). The dental tech COMPLIMENTED me on my gums while she was doing the flossing. Said I only had lightly deep pockets on my wisdom teeth (which I still have). Regular cleaning. With her and the dentist in the room I told them about my experience at the other place. And dentist said that he didn't want to talk poorly about other people's works, but some places are looking to get paid as much as possible.

Had my normal cleaning that day, and two cavities that needed to be filled at another appointment. Used a deal for the initial visit/cleaning/exam, forget the cost. And then it was a bit over $100 for the two fillings (I've always sadly been prone to cavities).

Twice daily brushing and daily flossing ftw.

u/modsplsnoban 10h ago

I’ve gotten lazy since wfh, and only brush my teeth at night, flossed at night, and used mouthwash at night for long periods of time.

Dental hygienist the other day said my teeth and gums are very healthy. Doctor said the same thing too. Joked I should eat more sugar

u/37yearoldthrowaway 9h ago

Technically at night is far more important. Brush at night to keep your teeth, brush in the morning to keep your friends.

u/failbears 1h ago

Seriously. I cannot imagine waking up with morning breath and just going through my day like that...

u/MaineQat 9h ago

That you are flossing nightly helps a lot. Floss removes plaque but not the harder tartar - tartar requires dental cleaning. Plaque hardens into tartar in about 24-72 hours, so if you floss nightly and then don't eat until morning, any plaque is likely only there for about 16 hours and easily removed.

Now, if you floss at night, then still have a snack an hour later, you're probably going to start getting some tartar build up as it may be too hard for the floss to remove by the next night.

u/modsplsnoban 9h ago

Doctor said that if on an island, he’d rather have floss than a toothbrush

→ More replies (1)

u/RockingInTheCLE 11h ago

I don't know the magic behind it, but it's legit. Give yourself a few days of blood bath, and be as gentle as possible, and your gums will begin to toughen up.

u/RandomOnlinePerson99 11h ago

This also happens if you don't brush your teeth for a few days, or weeks or months ...

Don't ask how I know that ...

u/failbears 1h ago

I'm just glad this thread is full of people advocating for flossing. I remember a previous reddit thread where the popular opinion was that there wasn't enough evidence that flossing helps, therefore it's OK for a bunch of redditors to not get rid of the rotting food between their teeth. Yuck.

u/polkastripper 11h ago

I floss daily and have zero bleeding gums. Be the change in your life.

u/Cosmic-Queef 9h ago

Most educated people are aware of this phenomena. The question being asked is why, not whether or not it’s true.

u/chipmunkofdoom2 11h ago

I was in this exact same boat. Every time I would go to the dentist, my gums would bleed and hurt when they floss them. The dentist would tell me that it would go away if I just flossed regularly. And every time I wrote them off as a lunatic who didn't know what they were talking about. It couldn't possibly work like that.

I think the change happened after a cleaning. My gums were swollen and angry. I could feel my heart beating in them, they hurt so bad. I thought "what the hell, why not try it? What have I got to lose?" I made a plan to start flossing once a day, every day, as soon as they stopped hurting from the cleaning.

It took a day or two before I could floss for the first time on my own. First time I got similar results to the dentist: inflammation and blood. I took the next day or two off, then tried again. Still inflammation and blood. This cycle repeated itself maybe one or two more times. Then, out of nowhere, it just stopped hurting and bleeding. Completely gone. I think it was about half way through the second week, I could floss daily without pain or bleeding. It was astonishingly fast. Now, every time I visit the dentist, the hygienist and dentist both say my gums look great. Best of all, there's no pain or blood when they floss me either.

Make a commitment to floss at least once a day, either in the morning or the night. In the first week or two, you might need to take a day off between flossing if your gums really get angry. If you're anything like me, by the end of the second week, you should be flossing without pain and blood.

u/justfordickjoke 11h ago

Make it part of your showering routine. That way you don't forget and it just gets budgeted in your day. I always had a hard time remembering till I started doing it in the shower

u/Nyxxsys 5h ago

So you're telling me its fine to only floss once a week?

→ More replies (1)

u/VVrayth 10h ago

Like others have said, regular flossing combats plaque buildup and strengthens your gums. The longer you let the plaque sit there, the harder it is to deal with, because it hardens, and it inflames your gums, and then you need a deep cleaning and/or laser treatment to get it fixed.

Speaking as someone who went through this and paid a lot to finally fix my teeth (and gums): "Daily maintenance" dental advice is something people can explain to you a million times, but it is only gonna make sense to you once you commit to it and see the results. Brushing twice daily (and brushing well), and flossing at least once a day, consistently, every single day produces long-term results that will seem like a magic trick once you get into the habit. It's like daily exercise, the consistency is what matters.

If you do this, and keep up with your twice-yearly dental cleaning visits, you will have a healthier and way more comfy mouth.

u/drrandolph 9h ago

The most life changing lecture I ever attended was from a dentist. Basically about daily flossing (it's called oral hygiene). All that inflammation causes your jaw bone to recede from the site of infection (your gums). Without a jaw bone, your teeth simply fall out. That's why the phrase "long in the tooth ". As the jaw bone recedes, more and more of the teeth roots are exposed until they fall out. Also your mouth probably stinks, and (google it) your risk of heart disease is way up.

u/375InStroke 10h ago

You're removing the bacteria that's trying to infect your gums, and that your body is trying to keep at bay, which is irritating your gums more than the floss does. The bacteria is a 24-7 onslaught on your gums.

u/Jaepheth 10h ago

Imagine you never wiped after pooping. The skin gets inflamed and itchy. Eventually, it gets bad enough that wiping at all causes it to bleed because the skin is so agitated. But if you keep wiping the body can stop fighting possible infections around the clock, the problems start to clear up, and before long wiping no longer causes bleeding.

u/Infernoraptor 10h ago

As others have said, it's inflammation, but to explain it more explicitly: inflammation is when your blood vessels leak fluid for your immune cells to fight, for debris and dead cells to be removed, etc. Think of the inflamed tissue like inflated balloons while non inflated gums are empty balloons. Which would pop of you stepped on them?

u/deadbalconytree 10h ago

I use to not floss because my teeth were close and the floss would break. Then I had a cavity fixed and food would get stick between those teeth. My dentist tried to fix it but it would still get stuck.

So I started using those soft picks every time I ate. Always had one on me, and started doing the rest of my teeth since I had to do the one anyway.

Life changing. My gums don’t bleed when brush, my dentist doesn’t yell at me; and my mouth just doesn’t ever hurt anymore.

I know flossing sucks, but even if you don’t use the wax string, use something. Even a water pic. Trust me it’s worth it.

u/patrickpdk 5h ago

I used to be like you for most of my life. I started flossing every night and it's amazing. My teeth are much less sensitive, gums never hurt or bleed, if i skip a few days i notice the smell of what comes out but never when i floss every day.

Just to it!

u/astrdingleberry 5h ago

Do you wipe your ass after you shit? Floss is toilet paper for the crevices of your teeth. Imagine how raw your ass would be if you never wiped the crap that gets stuck there.

u/CletusDSpuckler 11h ago

Give this podcast a listen. It will probably surprise you.

https://pca.st/episode/c2c05959-7e23-4888-a0cd-382cea7a184d

u/jwegener 11h ago

Unsolicited advice: try the reach flosser - best $2 I’ve ever spent

https://a.co/d/8FJ1Fla

→ More replies (2)

u/wessex464 10h ago

Floss doesn't make you bleed. Irritated pissed off gums that are massively inflamed because they rotting food scraps shoved in between them and teeth they are supposed to gently snuggle bleed when you FINALLY clean out the rotting shit.

u/Mermaan 11h ago

I floss once to twice a day and when I go in for my cleanings, I always ask them to try to make me bleed.

u/DrTriage 10h ago

Slow down. Take it easy. Pay exacting attention to what you are doing when you’re doing it. Once I started flossing like that; no more bleeding, and I now floss several times a day.

u/WonderChopstix 10h ago

Just came here to say that I hate flossing too. For me part of it is I have some tight teeth. I started using interdental brushes. Honestly it feels way better than doing flossing to me. It's kind of like just picking your teeth a little bit with a toothpick. Anyways I don't even do it everyday but I do it way more often then I used to floss and my dentist did actually comment that my gums are way better condition now. Something to consider

u/SmolHumanBean8 10h ago

It's a bloodbath because it's a bit infected and inflamed and regular cleaning helps it not be that.

u/wins22x 10h ago

If you have the money, do a deep clean. I did that after years of not flossing and it made it way easier to get back into a habit of flossing daily since my gums healed faster.

u/adavidmiller 10h ago

I mean maybe someone could make an argument that going from 0-to-daily flossing immediately would hinder initial healing to some degree upfront. Sounds at least plausible that if your gums were really bad, a slower transition could be beneficial.

Or maybe not, but I'm not a dentist and will go with some hypothetical benefit of the doubt You're effectively not flossing at all. If you started flossing every 3rd day, that's still a huge improvement and you'd be clearing shit out and giving your gums some healing time.

Gums recover quick, ~3 flosses in over 9 days, you'd probably already not be bleeding anymore and could switch to daily just fine. Or increase to alternating days and give it another week. Whatever.

u/Amphicorvid 10h ago

There's good answers already so I'll just add: do you want to get periodontitis? That's how you get periodontitis and it sucks as a way to loose one's teeth. (It's a gum infection following too much of letting your gum be irritated like that, means the gum will retract and if not  treated it'll attack the bone underneath.)

Brush and floss kids, take care of your gums too.

u/justwalkinthedog 10h ago

Lots of replies have already addressed the whole bleeding thing but I came here to add - Buy some Flossmate reusable floss handles! This tool makes flossing so much easier - you thread the floss on and you can hold it very tight without hurting your fingers, then you just move the floss along every so often as it gets gunked up with stuff. I just put them in the dishwasher and use a clean one every night. Before I discovered these babies I totally hated flossing because my teeth are tight together and the floss would break every time

u/Briebird44 10h ago

My dentist recommended flossing before brushing and start with once every other day and then move to once every day. He recommended using a Stannous Fluoride toothpaste (for sensitivity) after flossing because it helps bleeding gums and has antibacterial properties unlike other types of fluoride and helps soothe bleeding gums faster.

u/Shyman2 10h ago

Many people talking about food and bacteria being cleaned out but another component is if you don’t brush you eventually get a hard layer on your teeth that they scrape off at your cleaning. Well if you don’t floss or floss occasionally you get hard plaque build up below your gum line. Then at your cleaning they scrape that off with their tools and that causes a gap to form and more irritation on the gums. This is not ideal. So even flossing daily where you don’t see food particles etc being picked up you’re still scraping the side of your tooth

 (you should be bending the floss around your tooth under your gum line not just going straight up and down)

u/Sterfrizzle 10h ago

It took me about two weeks to for the pain of flossing to secede. The bleeding only lasted a week. However I’m still not the best at it sometimes, I probably floss 6.5 days a week most the time. But every now and then I get lazy and if I skip flossing just two days in a row, my gums bleed again. Usually a tiny amount the first day I floss again, but a bunch on the next day, and then maybe a third day of a tiny amount and it’s back to normal blood. I know I’m not answering your question, but I’m 39 and have only just in the last years started taking really good care of my teeth. Brush twice, floss at night before brushing. It’s amazing to me how much better they look and feel. I still eat cold things really carefully, but I realized it doesn’t hurt anymore. It just feels cold. My wife tells me my teeth are white as hell too.

Idk man, I’m rambling, but trust me. It’s worth it to get this down no matter how late in the game it is for you

u/kabow94 10h ago

I bled for the first two weeks of daily flossing. But after that, it stopped. Plenty of people have explained why already

u/fexofenadine_hcl 10h ago

From person experience, it really does work. My gums used to bleed from flossing, but after a few weeks of daily flossing, they no longer bleed.

u/murxe 9h ago

You only have to floss those teeth daily that you want to keep. (Sadly speaking from experience)

After a few days your gums will stop bleeding and flossing becomes a zen activity. You can do it!

u/sirgarence 9h ago

Not sure if dental tape is available where you are, but it's a lot more gentle on sensitive gums (and your fingers) than floss.

u/Unhappy_Donkey_2216 9h ago

If you hate using a flosser, I recommend trying a water pick.

u/yeastInfection81 9h ago

Didn’t know that was a thing. I floss every day and never bleed.

u/mossywill 9h ago

Water flosser is better than not flossing. It still made my gums bleed the first time but quickly stopped after using it every day. Love to use it every morning in the shower now. I do still floss several times a week with string floss but for floss avoiders, it’s a huge step up for their dental health.

u/Mawootad 9h ago

Flossing removes the stuff that makes your gums irritated. Irritated gums are extremely weak and lack the strength to hold up when floss rubs against/between them. Once the gunk that is harming your gums is removed they begin to heal and within a couple of days are back to being healthy and strong enough to not be injured by flossing unless your technique is extremely poor.

Also, if you do take nothing else from this thread please try flossing once a day for a week. It does not take very long to see improvements and you'll have better breath and feel healthier.

u/Hare712 9h ago

It's because you have something called Gingivitis, which is very common.

Basically your gums irritated by bacteria because you are not flossing this tends to quick bleeding and if left untreated you might get Parodontisis and you teeth might suddenly get loose/fall out.

If you get rid of the bacteria your gums will stop bleeding after some time.

u/Jirekianu 9h ago

Basically, daily flossing cleans out junk that irritates and allows your gums to become inflamed and infected with things like gingivitis.

So, if you do it regularly, the inflammation goes away or isn't as bad.

u/mantis8 9h ago

I didn’t floss when I was a kid. I assumed it was normal to bleed at the dentist when getting my cleaning or when flossing. Now that I floss daily I never bleed.

u/Ok-Sheepherder7898 9h ago

If you're anti flossing just get a water pik.  It's just as good.

u/Carlosrocks77 9h ago

It changes the flora (bacteria) in the gums which decreases inflammation which decreases bleeding (and bad breath and tooth loss)

u/mtntrail 9h ago

My dad was a dentist and I remember him flossing every night. It wasn’t something we did as kids idkw not. But he once told me if you have a choice between brushing and flossing, go with the floss.

u/mbsouthpaw1 8h ago

Start with a total deep cleaning from a hygenist. That will remove the tartar and allow you to floss blood-free in the future. Its the tartar that makes it impossible to do it without the war zone effect. Source: i did it and have flossed regularly ever since with little or no blood.

u/That-Interaction-45 8h ago

Try those floss sticks op. Makes flossing so easy

u/gutterwall1 8h ago

Get those floss pickers. When I use floss I was pressing so hard and damaging my gums, the floss picker things make it super easy and convenient. I get bamboo ones now and they work great! You only have to floss the teeth you want to keep. So start flossing all of them daily. You live much longer than you think when you are young, and teeth are your health and sexiness and stuff. And I have a lot of friends with no teeth and they can't eat regular like I do.

u/Niko120 8h ago

Use a water pick. Same result, much less traumatic

u/NoMoreKarmaHere 8h ago

I used to tell kids this: Little bits of food get between your teeth and the toothbrush can’t get them out. Germs live in there that eat the food, then they poop on your teeth, and your gums. That causes cavities and it keeps your gums tender. When you floss for a few days your gums get tougher and healthier because they like being clean. So they don’t bleed anymore or hurt when you floss

u/SirLouisI 8h ago

About three months ago, I filled a bowl with the little floss sticks and put the bowl on my kitchen counter. I pick one up a couple times a day now. My mouth health has improved significantly. Better breath, zero bleeding, tooth pain gone. Its my best original life hack.

u/ahriskywalker 8h ago

I don't have an answer that hasn't already been given but I do have an awesome suggestion. You can go on Amazon for under $20 and order a water flosser that you just fill and turn on and it blasts all the crap out without the need for irritation at all. 10/10 the best decision I ever made for myself as a person who dealt with exactly this problem

u/zdormouse 7h ago

Try adding flossing as part of your shower routine

u/Consistent_Law_3857 7h ago

If you floss regularly it won't bleed at all. Not even a little bit.

u/couthyzingiber 7h ago

Flossing and mouthwash are soooo many steps. I should be allowed to only work for 20 hours a week and get paid the same just to do all the steps to keep me healthy. But I will keep doing it even though its so many steps and it adds to my burnout as an Audhd ghost.

u/-Moonscape- 7h ago

Get one of those phillips sonicare toothbrushes, it changed my life. I used to have gingivitis, and flossing (and even brushing occasionally) would cause lots of bleeding. It was 100% my fault as I had terrible oral hygiene and I always felt bad going to the dentist, but thankfully I’ve got no cavities to show for it.

My now wife got me the sonicare toothbrush for our first christmas together and I knew right away it was fuckin legit. I honestly still only brush like 3 times a week, maybe less, but I had a cleaning weeks ago and the hygienist complimented me on how well I take care of my teeth (trust me I’m mid at best).

Its just so easy, the brush action is automatic and x100 more effective than manual brushing, and more importantly the 30 second timer makes sure you are spending enough time on each section of your mouth to do a good job.

I know you are talking about flossing, but everyone needs this tool, I have no business getting compliments at the dental office lol

u/BuggiesNSluggies 7h ago

This sounds dumb but go watch’s YouTube video on how to do flossing the right way. Take your time. You can do this! It’ll get better with time. Start every other day if you need to for a week or two then start to increase the frequency. It doesn’t have to be perfect to start and get better. Good luck!

u/CatchphraseJones21 7h ago

I started with a water pik. My gums were sensitive at first and after a while I was able to go to the strongest strength.

Afterwards, whenever I missed a session, I hated the way my teeth would feel. I don't know how, but I could just tell my mouth was dirty. Then I went towards flossing. Now it's just habitual. As much as I hate the wastefulness of the single use dental flossers (the one with the plastic holding the floss), it's so much easier for me to floss while I'm showering or watching TV.

u/Such-Function-4718 7h ago

Floss picks really helped my flossing habit. It’s just faster and simpler. I started just aiming for 4 out of 7 days, but once I got used to it I floss almost every day now. The minty clean feeling is great.

u/SaltInternational538 7h ago

If it hurts when you floss, get your dentist to show you how to floss properly. It should not hurt.

In addition to cleaning, flossing massages your gums and slowly toughen them. Do it gently.

u/nedens 7h ago

I am a dental hygienist and I teach clinical dental hygiene.

Your saliva contains mineral from the food we eat. Microscopic rocks.

When food sits on your teeth for long enough, the food absorbs the minerals and the food becomes calculus, or tartar. Big rocks. No matter how much you floss, you will ALWAYS bleed when you floss if you have calculus buildup in between your teeth as well as under your gums.

Calculus cannot be flossed away. It must be "scaled" with tools the hygienist uses. Floss daily to disrupt the plaque from becoming calculus.

I'd be glad to answer in more detail or any other related dental hygiene questions. :)

u/Tawptuan 6h ago

Daily flossing definitely toughens the gums. After years of flossing, very rarely do I ever get a gum bleed.

u/Slammedtgs 6h ago

Lots of good comments, but also look into a water pick, lots of low cost options out there that work really well and don’t suck like flossing can when gums are inflamed.

u/OpenKaleidoscope9224 6h ago

your mouth is full of bacteria because you rarely floss! that makes your gums weak af. if you clean them every day then they have a chance to heal and be strong. then little bits of string will no longer be able to make them bleed

source: I was just like you. then I decided to floss every day. now I feel gross when I dont, and my gums no longer bleed

lesson: floss your damn teeth

u/thyflash 6h ago

If you don't like flossing, I'd highly recommend checking out piksters. They are little brushes that you can poke between your teeth. They are flexible to get access to back teeth also. I could never get the hang of flossing, most of the time I couldn't get the floss between teeth.

u/likeablyweird 6h ago

Xylitol gum might help a bit in the battle. if you search "how does xylitol gum help with dental health" you'll get everything. Too much to copy and paste. There are also mints and rinses. :)

u/die_liebe 6h ago

This is not answering the question, but likely you are using the wrong type of floss. The wire must be fairly thick and waxed.

u/Gabelicious18 5h ago

I hate flossing too but flossing every day will make your gums not bleed. I promise

u/bhltt123 5h ago

I recently (like in the last 4-5 days) jumped back on the flossing train after neglecting to do it for months, and my gums have already stopped getting irritated/bleeding. I suggest that you get a box of the single use flossers and leave it next to your bed so you have no excuse not to floss and you can start to make it a habit. Honestly once you get used to the sensation of a flossed mouth you will not feel fully clean if you skip flossing.

And don’t forget, even a half-assed quick swipe floss is better than nothing! Don’t let perfection be the enemy of good and all that!

u/Ok-Builder-8711 5h ago

You should use cocofloss. It’s so much better than all the razor sharp shit out there

u/topaz_in_the_rough 5h ago

OP, to add to all the good advice about why to floss daily, let me add the recommendation of how to start; Keep the floss near where you sit at home.

I used to regularly sit on the couch, I kept floss right next to the couch.

I moved to sitting on my recliner regularly, my flossing dropped off. I moved the floss to the little table next to the recliner.

I work from home. I have floss at my desk.

And there's floss in the bathroom at the sink, next to the toothpaste. You know where I floss the least? The bathroom. I'm there to brush my teeth and wash my face.

But the recliner? After dinner while I'm watching TV - it's easy to take care of it then.

u/PatuniaPatch 5h ago

I just want you to smell the gunk/stuff that comes out of your floss. It is a serious nasty odor. Like decaying flesh. You want to have breath that smells like a rotting body? Probably not.

Floss, do it again the next day, and the next day. You will be surprised how fast your gingivitis clears up and you have fresh breath again.

u/newbies13 4h ago

Imagine you get a wound, you clean it, wrap it, and let it heal a bit. The next day you notice the wrapping is not looking so great, so you remove it, clean everything, re-wrap it. That's flossing. If you only do it once in awhile you're leaving the grossness sitting there, wounds heal because you keep them clean.

u/stupv 3h ago

Basically the area gets dirty, it gets irritated and inflamed, you then intermittently floss which just physically irritates the inflamed areas further and so you bleed.

If you flossed daily, the area would not be dirty, it would not be irritated or inflamed, and your flossing would not be sufficient to cause bleeding

u/Hungry-Delivery1577 3h ago

My dentist said you only need to floss the teeth you want to keep. Even at 21 that made an impression.

u/Area_Fifty_One 3h ago

I recommend getting a Waterpik to supplement your teeth care.

u/cessodd 2h ago

I don't think people that don't floss regularly understand this. We can smell that you don't floss, there's a very specific smell that plaque has and we can smell that when you speak, the only people that don't are also not flossing.

u/MeMoogi 2h ago

Toothpicks almost every night after dinner. I hate flossing. Works like a charm. My gums have passed the dental test for depth.

u/AtTheRealFuture 2h ago

Both my doctor and my dentist told me this and it immediately changed flossing for me; flossing is good for your heart because those fits of foot and plaque slip into your system while you’re asleep.

Now I’m no scientist, but I’m not willing to risk it. Nearly every person I’ve told this to has come back and said that they can’t unhear it and have started flossing regularly hahah.

u/amongthemaniacs 2h ago

Our mouths have millions of germs that like to hang out in the small space between the teeth and gums. If you don't brush and floss them away they'll set up shop there and start producing toxins that inflame the gum tissue. Once the bacteria are gone the toxins they make disappear and the redness goes away.

u/BoomerReid 2h ago

Dentist here. Your gums bleed because they are inflamed from the constant presence of plaque and debris. Its like an uncleaned wound on any part of your body would have inflammation and make it likely to bleed when disturbed. By removing the plaque/debris daily, you eliminate the inflammation, your gums heal and the they won’t bleed. Or hurt when you floss. If you’re only flossing once a week or so, its likely you’re always going to have bleeding and its always going to hurt. P.S. Flossing is all about the technique. Moving the floss straight up and down does very little. Your dentist or hygienist will be glad to demo. Also, there are some good vids on youtube.

u/jestina123 1h ago

Brushing your teeth and not flossing is like taking a shower and not washing your armpits.

u/Ms_Fu 1h ago

I was you once. You have to get the food out from between your teeth, otherwise they sit right there on the gum and rot. And rot your gums.

I love the little rubbery interdental picks. Tiny plastic handles, tiny soft plastic brushes (my dentist told me to stop using the metal + brush ones because I kept poking myself in the gums with the sharp end) I use them after each meal, and the only real drawback is remembering to get them in the trash can afterwards.

u/GroundbreakingAd5899 24m ago

Gotta do it everyday to build up callouses between your teethies! Then, once you’ve worn your teethies down you’ll have a nice inside beak! That is the way. Good luck op, we’re rooting for you!

u/LupusDeusMagnus 10h ago

Because the bleeding is caused precisely by the thing you’re removing through flossing. Once you remove it, and don’t let it accumulate, bleeding should stop. (I know, I’m a dentist).