Cleaning your teeth well comes down to a few basics: brush twice a day for two minutes each time, clean between your teeth daily, and avoid a handful of common mistakes that quietly undermine the effort. Most people already know the broad strokes but miss the details that make the biggest difference, like brush angle, timing around meals, and what you do (or don’t do) right after brushing.
Brushing Technique That Actually Works
The method dentists recommend most often is called the Modified Bass technique, and it’s simpler than it sounds. Hold your toothbrush at a 45-degree angle so the bristles point toward your gum line, not straight at your teeth. Make short, gentle back-and-forth strokes on each tooth, then sweep the brush away from the gum toward the biting edge. This pulls plaque out from the narrow gap where your gums meet your teeth, the spot where decay and gum disease start.
Work in a systematic order so you don’t skip surfaces. Outside of your upper teeth, inside of your upper teeth, chewing surfaces, then repeat for the bottom. For the inside of your front teeth, tilt the brush vertically and use the toe of the brush head in short up-and-down strokes. Two full minutes covers all surfaces if you don’t rush. A timer or an electric toothbrush with a built-in pacer helps more than most people expect.
Cleaning Between Your Teeth
A toothbrush only reaches about 60% of tooth surfaces. The spaces between teeth harbor plaque that brushing alone can’t touch, and this is where cavities between teeth and early gum disease tend to develop. You need a separate tool for these gaps, and you have two main options: traditional floss and interdental brushes (the tiny bottle-brush-shaped picks).
Research consistently favors interdental brushes. A 2019 Cochrane review found they improve gum health slightly more than floss and may reduce bleeding. A 2018 meta-analysis in the Journal of Periodontology ranked interdental brushes as the most effective option for reducing gum inflammation, while floss ranked near the bottom. Multiple studies over the past three decades show interdental brushes produce lower plaque scores in the spaces between teeth compared to floss.
That said, interdental brushes only work if the gaps between your teeth are wide enough to fit them. If your teeth sit tightly together, floss is the better choice for those spots. Many people benefit from using both: interdental brushes where they fit comfortably, floss where they don’t. The best interdental tool is the one you’ll actually use every day.
What to Do After Brushing
This is where a lot of people unknowingly cancel out their effort. After you finish brushing, spit out the excess toothpaste but don’t rinse your mouth with water. The fluoride left on your teeth continues to strengthen enamel and fight bacteria for some time after brushing. Rinsing with water, or even with mouthwash, washes that concentrated fluoride away and reduces its protective effect.
If you use mouthwash, use it at a completely separate time, like after lunch. Using it right after brushing is counterproductive, even if the mouthwash itself contains fluoride, because the concentration is lower than what your toothpaste leaves behind.
Timing Around Meals Matters
Acidic foods and drinks temporarily soften your enamel. This includes sodas, sports drinks, citrus fruits, citrus juices, and sour candies. Brushing while your enamel is in that softened state can physically scrub it away. Wait at least an hour after consuming anything acidic before you brush. If you want to clean your mouth sooner, swish with plain water to help neutralize the acid without damaging the surface.
Brushing before breakfast, rather than after, sidesteps this problem entirely for your morning routine. You clear overnight plaque, coat your teeth in fluoride, and avoid the acid-timing issue with your morning coffee or orange juice.
Don’t Forget Your Tongue
Your tongue’s rough surface traps bacteria and food debris that contribute to bad breath and can reintroduce bacteria to freshly cleaned teeth. You can brush your tongue gently with your toothbrush after cleaning your teeth, but a dedicated tongue scraper tends to remove more plaque and bacteria. Scrape from back to front a few times, rinse the scraper between passes, and you’re done in about 15 seconds.
Choosing the Right Toothpaste
Fluoride toothpaste remains the standard recommendation for cavity prevention. Fluoride integrates into your enamel and makes it more resistant to acid attacks from bacteria. For most people, any fluoride toothpaste with a dental association seal does the job.
Hydroxyapatite toothpaste is a newer alternative gaining attention. Hydroxyapatite is the same mineral your enamel is naturally made of. It works by filling microscopic cracks and weak spots on your teeth, depositing calcium and phosphate back into the enamel, and forming a protective layer over areas of erosion. When acid hits, it attacks that added layer before reaching your natural tooth. Most commercial formulas contain 10% hydroxyapatite or less, and safety reviews have cleared concentrations up to about 30%. It’s a reasonable option if you prefer a fluoride-free toothpaste, though fluoride has a longer track record in large-scale research.
Replacing Your Toothbrush
Swap your toothbrush, or your electric brush head, every three to four months. Frayed bristles don’t clean effectively and can irritate your gums. Replace it sooner if the bristles look splayed, if you’ve been sick, or if the brush has been contaminated (dropped on the floor, left in a travel case for a long stretch, or discovered by a pet).
Cleaning Around Braces and Implants
Orthodontic brackets and wires create dozens of extra nooks where food and plaque collect. An interproximal brush, the small pointed brush you can thread under wires and around brackets, is essential for reaching those spots. Floss threaders or pre-threaded floss let you get floss under the archwire and between teeth. A water flosser can supplement these tools by flushing debris from areas that are hard to reach mechanically.
If you wear clear aligners, remove them before eating and brush your teeth before putting them back in. Trapping food and bacteria under an aligner accelerates decay. Flossers tend to be the easiest interdental option for aligner wearers since there’s no wire to navigate around. Even when you don’t have toothpaste handy, brushing with just water after eating removes food and plaque and is far better than skipping it.
How Often You Need Professional Cleanings
For most people at average risk, a professional cleaning every six months is sufficient. But the current guidance from the American Dental Association emphasizes individualized scheduling based on your specific risk factors rather than a rigid universal timeline.
If any of the following apply to you, cleanings every three to four months are typically more appropriate:
- History of gum disease, especially if you’ve had deep cleaning (scaling and root planing) in the past
- Diabetes (type 1 or type 2)
- Tobacco use
- Dry mouth, whether from medications, medical conditions, or aging
- Active orthodontic treatment, where cleanings every three to four months help prevent the white spot lesions and gum inflammation that commonly develop around brackets
- Pregnancy, where many dental professionals recommend at least one cleaning per trimester
- Immune compromise or rapid tartar buildup
Seniors often benefit from three to four cleanings per year as well, since receding gums, dry mouth from medications, and changes in dexterity all increase risk. Children should start dental visits by age one, with cleanings every six months after that.