Most people brush their teeth without thinking much about it. Flossing, when it happens at all, tends to get added at the end as an afterthought. But if you have ever wondered whether the order actually matters, you are not alone. It is one of the more common questions people ask at dental check-ups, and the answer is more nuanced than a simple yes or no.
The debate around flossing before or after brushing comes down to a few different factors: how well fluoride from toothpaste reaches between your teeth, how effectively plaque and debris get removed, and ultimately, which approach you are most likely to stick to consistently. Poor flossing habits are one of the more common contributors to plaque-related gum disease, making the quality of the habit more important than the order.
Quick Overview
- Whether to floss before or after brushing is a common question without a single definitive answer
- Most people may benefit from flossing first, as it can help loosen debris and allow fluoride toothpaste to reach between teeth more effectively
- The best approach often depends on personal preference and which routine is easiest to maintain consistently
- What matters more than the order is that flossing is done correctly and at least once per day
- A dentist can advise on the approach that suits your teeth, gum health, and existing routine
Below, we explain the case for each approach, how to floss correctly, and what other tools can help.
Does the Order of Flossing and Brushing Actually Matter?
The short answer is: not as much as doing both thoroughly every day. Most dental guidance focuses on consistency rather than sequence.
That said, there is growing support for flossing first. When you floss before brushing, you loosen food particles and plaque from between the teeth, which may offer a slight advantage in fluoride retention.
Brushing first is not wrong, however. Some people find it easier to floss after brushing when their mouths feel clean, and they are more thorough because of it. The approach that leads to the most consistent, careful flossing is usually the best one for a given person.
Why Does Flossing Matter at All?
A toothbrush, even a well-used one, can only clean the surfaces of your teeth that it can reach. The gaps between teeth and just below the gum line are where plaque and food debris tend to accumulate, and where a toothbrush simply cannot get to.
The Australian Dental Association recommends daily interdental cleaning for everyone. When these spaces are not cleaned regularly, plaque builds up, hardens into calculus (also called tartar), and becomes a contributing factor in both tooth decay and gum disease. Gum disease, in particular, begins quietly. If you notice your gums bleeding when you floss, that is often an early sign of inflammation rather than a reason to stop.
The Case for Flossing Before Brushing
Flossing before you brush gives the toothpaste that follows a cleaner path to work with. By removing debris and loosening plaque between the teeth first, you allow your toothbrush and fluoride toothpaste to make better contact with those surfaces during brushing.
There is also a fluoride retention benefit. When debris is cleared away first, fluoride has a better chance of coating the areas between teeth rather than being blocked by food particles or plaque films.
For people who tend to rush through their routine, flossing first may also help. Getting it done at the start means it is less likely to be skipped when tiredness sets in at the end of a brushing session.
The Case for Flossing After Brushing
Some people find that flossing after brushing works better for their habits. Brushing first removes the bulk of surface plaque and leaves the mouth feeling fresh, which can make the act of flossing feel more manageable and motivating.
If you use a fluoride mouthwash, flossing after brushing but before rinsing can also help distribute any remaining fluoride into the spaces between teeth. This approach can be particularly useful for people with a higher risk of decay in those interdental areas.
The key principle in both cases is the same: do not rinse vigorously with water immediately after brushing, as this washes away the fluoride before it has had time to work on the enamel.
How to Floss Correctly
Getting the technique right matters as much as the timing. Brushing and flossing daily is one of the most effective things you can do for long-term oral health, but only when done correctly.
Here is a straightforward approach:
- Break off around 30 to 45 centimetres of floss and wind the ends around your middle fingers on each hand, leaving a few centimetres to work with
- Hold the floss taut between your thumbs and index fingers and gently slide it between two teeth
- Curve the floss into a C shape around each tooth and slide it gently up and down, going slightly below the gum line
- Use a fresh section of floss as you move to each new space
- Avoid snapping the floss down into the gums, as this can cause irritation or damage over time
If traditional string floss is difficult to manage, there are alternatives worth considering.
What If Traditional Flossing Does Not Work for You?
Not everyone finds string floss easy to use. People with limited dexterity, tightly spaced teeth, dental work such as bridges or braces, or those who simply find it awkward may benefit from alternative tools.
Floss and interdental brushes remove plaque from areas a toothbrush cannot reach, and the right tool depends on the individual. Options include:
- Floss picks or flossettes, which have a handle and pre-threaded floss, making them easier to manoeuvre at the back of the mouth
- Interdental brushes, small cylindrical brushes that fit between teeth and are particularly useful for larger gaps or around dental work
- Water flossers, which use a stream of water to flush debris and bacteria from between teeth and along the gum line
Your dentist can advise on which option suits your teeth and gum health best.
What Your Dentist Would Say
When patients ask whether to floss before or after brushing, most dentists focus less on the order and more on whether flossing is happening at all, how thoroughly, and how often. Technique and consistency are the parts that tend to make the biggest difference to long-term gum and tooth health.
If you are unsure whether your current routine is working well for your teeth and gums, a check-up is the simplest way to find out. A dentist can review your gum health, identify any areas where plaque tends to build up, and give personalised guidance on the routine that suits you.
At Beyond Infinity Dental, our dentists take time to discuss your oral hygiene routine as part of every check-up. To book an appointment, contact our team or call (02) 8806 3799.
Frequently Asked Questions
Can poor flossing cause bad breath?
Yes. Bad breath is often related to bacteria and food debris sitting in the spaces between teeth and along the gum line, areas a toothbrush cannot reach on its own. Regular flossing removes this buildup before it produces odour. If bad breath persists despite good oral hygiene, it is worth raising with your dentist, as it can sometimes indicate an underlying issue such as gum disease or tooth decay.
Should I rinse with water after brushing?
It is generally better to spit out excess toothpaste rather than rinse vigorously with water after brushing. Rinsing immediately washes away the fluoride before it has had time to strengthen the enamel. If you use a fluoride mouthwash, use it at a separate time from brushing, for example after lunch, rather than immediately after, for the same reason.
Is an electric toothbrush better than a manual one for people who floss?
Both can be effective when used correctly. Electric toothbrushes can make thorough brushing easier, particularly for people who tend to rush or apply too much pressure. They do not, however, replace flossing: a toothbrush of any kind cannot clean the tight spaces between teeth. Flossing remains necessary regardless of which type of toothbrush you use.
What is the difference between dental floss, dental tape, and unwaxed floss?
Standard dental floss is a thin thread suitable for most people. Dental tape is broader and flatter, which some people find more comfortable and easier to grip, particularly those with wider gaps between teeth. Unwaxed floss is thinner and may fit more easily into tighter spaces, though it can be more prone to shredding. Waxed floss slides between teeth more smoothly. The appropriate type is the one you find easy enough to use consistently. Your dentist can help you choose if you are unsure.
References
Teeth.org.au. (n.d.). ‘Cleaning between the teeth’. Teeth.org.au. Australia: Australian Dental Association. https://teeth.org.au/flossing
Healthdirect Australia. (2026). ‘Dental care and teeth cleaning’. Healthdirect, January. Australia: Healthdirect Australia. https://www.healthdirect.gov.au/teeth-cleaning
Department of Health & Human Services. (n.d.). ‘Teeth and mouth care’. Better Health Channel. Melbourne, VIC: Department of Health, State Government of Victoria. https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/teeth-and-mouth-care
