Cleaning your teeth well comes down to a few basics: brush twice a day for two minutes, clean between your teeth daily, and pay attention to your gum line. Most people know the broad strokes but miss the details that actually prevent cavities and gum disease. Here’s how to do each step properly.
Brushing Technique That Actually Works
The most widely recommended method is called the Modified Bass technique, and it focuses on the gum line, where plaque builds up fastest. Hold your toothbrush at a 45-degree angle so the bristles point toward your gums. Make short, gentle back-and-forth strokes across each tooth, then sweep the brush away from the gum toward the biting edge. This motion pulls plaque and debris out from under the gum line rather than just pushing it around.
Work through your mouth in a consistent order so you don’t skip areas. Do the outer surfaces first, then the inner surfaces, then the chewing surfaces. For front teeth, tilt the brush vertically and use the toe of the brush head to reach behind them. The whole process should take about two minutes. Most people finish in under a minute, which means they’re leaving plaque behind.
Electric vs. Manual Toothbrushes
A manual toothbrush works fine if your technique is solid, but electric toothbrushes consistently outperform them in studies. A large Cochrane review found that electric brushes achieved about 21% more plaque removal and 11% greater reduction in gum inflammation over three months compared to manual brushes. The type that performs best is the oscillating-rotating design, where the small round head spins back and forth.
The gum health differences are especially notable. One clinical trial found that oscillating-rotating brush users had over twice the reduction in bleeding gums compared to manual brush users after just five weeks. Another analysis found they cut bleeding sites roughly in half. If you already have some gum inflammation or you know your brushing technique isn’t perfect, an electric brush compensates for a lot.
How to Floss Properly
Tear off a forearm’s length of floss and wrap the ends around each middle finger, leaving your index fingers and thumbs free to guide it. Starting at the back of your mouth, gently slide the floss between two teeth. Once it’s through the contact point, curve it into a C-shape against one tooth and move it up and down, going below the gum line as far as it comfortably goes. Before pulling the floss out, repeat that same C-shape motion against the adjacent tooth. Each gap has two tooth surfaces, and you need to clean both.
If you have wider gaps between your teeth or any degree of gum disease, interdental brushes (the tiny bottle-brush-shaped picks) tend to outperform floss for gum health. They can physically contact more tooth surface in open spaces. For tight contacts where a brush won’t fit, regular floss is still the better choice. Many people benefit from using both.
Don’t Rinse After Brushing
This is the habit most people get wrong. After brushing with fluoride toothpaste, spit out the excess but don’t rinse your mouth with water or mouthwash. Rinsing washes away the fluoride before it has time to strengthen your enamel. Skipping the rinse can reduce tooth decay by up to 25%. It feels odd at first, but it’s one of the simplest changes you can make.
If you use mouthwash, use it at a separate time from brushing, like after lunch, so you get the benefit of both the mouthwash and your toothpaste’s fluoride.
Choosing the Right Toothpaste
For adults, look for toothpaste with at least 1,000 ppm fluoride. Most standard toothpastes in the U.S. contain 1,000 to 1,100 ppm. If you’re prone to cavities, toothpaste with 1,500 ppm fluoride is slightly more effective and worth seeking out. For children under six, stick to toothpastes at or below 1,000 ppm, since young kids tend to swallow toothpaste. Formulas below 1,000 ppm offer less cavity protection, so avoid going too low.
You only need a pea-sized amount. More toothpaste doesn’t clean better, it just creates more foam.
Timing Around Meals
If you’ve eaten or drunk something acidic (citrus, tomatoes, soda, wine, coffee), wait at least 30 minutes before brushing. Acid temporarily softens your enamel, and brushing while it’s soft can wear it away. Your saliva naturally re-hardens enamel within that half-hour window. If you want to freshen up sooner, rinse with plain water or chew sugar-free gum to help neutralize the acid faster.
Clean Your Tongue
Your tongue’s rough surface traps bacteria, dead cells, and food particles, all of which contribute to bad breath. A tongue scraper removes about 30% more of the sulfur compounds that cause bad breath than brushing your tongue with a toothbrush. Scrapers are cheap, small tools made of metal or plastic. Place the scraper at the back of your tongue and pull it forward with gentle pressure. Rinse the scraper and repeat two or three times.
Beyond freshening breath, regular tongue cleaning reduces the overall bacterial load in your mouth, which helps prevent cavities and gum disease. It can also clear the white coating that builds up on the tongue’s surface and may even improve your sense of taste over time.
When to Replace Your Toothbrush
Swap your toothbrush or brush head every three to four months. Once bristles start to fray or bend outward, they lose their ability to sweep plaque away effectively. Worn bristles can also become more abrasive against your gums. If your brush looks visibly splayed before the three-month mark, replace it early. You should also get a new brush after you’ve been sick, since bacteria can linger in the bristles.