Proper brushing takes two minutes, uses a soft-bristled brush angled toward your gumline, and follows a consistent path so you never skip a surface. Most people rush through it in under a minute and scrub too hard, which misses plaque and wears down enamel. The technique below, called the Modified Bass method, is the one most widely recommended by dental professionals.
What You Need Before You Start
Use a soft-bristled toothbrush. Medium and hard bristles remove plaque effectively but cause gum thinning and enamel wear over time. The American Dental Association recommends soft bristles for everyone, and that recommendation is even more important if you have any gum disease. Replace your brush (or electric brush head) every three to four months, or sooner if the bristles look splayed or frayed.
Use a fluoride toothpaste, and only a pea-sized amount. More paste doesn’t clean better. It just creates extra foam that makes you want to spit and rinse sooner.
Step 1: Start at Your Upper Outer Surfaces
Hold the brush so the bristles point toward your gumline at roughly a 45-degree angle. The tips of the bristles should tuck slightly under the edge of the gum, where plaque accumulates the most. Starting at one side of your upper jaw (the back molar area), make short, gentle back-and-forth strokes across two or three teeth at a time. After a few strokes, sweep the brush downward, away from the gumline, to flick loosened plaque off the tooth surface. Then move to the next group of teeth and repeat.
Work your way across the entire outer surface of your upper teeth, from one side to the other. This should take about 30 seconds.
Step 2: Clean the Upper Inner Surfaces
Now flip to the tongue side of your upper teeth, keeping that same 45-degree angle toward the gumline. Use the same short strokes followed by a downward sweep. For the front teeth, where the brush doesn’t fit horizontally, tilt it vertically and use the toe (the front few bristles) of the brush. Make gentle up-and-down strokes along each tooth individually.
Step 3: Brush the Upper Chewing Surfaces
Hold the brush flat against the biting surfaces of your upper molars and premolars. Use a straightforward back-and-forth scrubbing motion here. The grooves in these teeth trap food easily, so take your time.
Step 4: Repeat on the Lower Teeth
Follow the same three-surface pattern on your lower jaw: outer surfaces first, then inner (tongue-side) surfaces, then chewing surfaces. The only difference is the sweep direction. On lower teeth, you sweep upward, away from the gumline, rather than downward. For the lower front teeth on the tongue side, tilt the brush vertically again and stroke away from the gums.
How Hard to Press
This is the step most people get wrong. Research on brushing force found that about 300 grams of pressure (roughly 3 Newtons) is the sweet spot for effective plaque removal. Forces above that level removed plaque but also started damaging tooth structure. For context, 300 grams feels like the weight of an orange resting in your hand. If the bristles are fanning out flat against your teeth, you’re pressing too hard.
A simple test: hold the brush with just your fingertips instead of your full fist. This naturally limits how much force you apply. Many electric toothbrushes also have a pressure sensor that buzzes or lights up when you push too hard.
Electric Versus Manual Brushes
You can get a thorough clean with either type. That said, a large Cochrane Review found that electric toothbrushes (the oscillating-rotating kind) removed about 21% more plaque and reduced gum inflammation by 11% compared to manual brushes over three months. The advantage is smaller in the short term, closer to 11% more plaque removal. The main benefit of an electric brush is that it does the motion for you, so technique matters less. If you tend to brush too hard or too fast, switching to electric is one of the easiest upgrades you can make.
If you use an electric brush, the technique changes slightly. You don’t need to make strokes at all. Just hold the brush head against each tooth surface at the gumline for a few seconds, then move to the next tooth. Let the brush do the work.
Clean Your Tongue
Bacteria on the tongue are a major source of bad breath. You can brush your tongue with your toothbrush by placing it at the back and stroking forward several times, but a dedicated tongue scraper is nearly twice as effective. Studies show scraping removes about 75% of tongue coating, while brushing alone gets about 40%. The flat edge of a scraper reaches into the grooves between taste buds more effectively than round bristles can. For best results, do both: brush the tongue lightly, then follow with a scraper.
After Brushing: Spit, Don’t Rinse
This is counterintuitive, but don’t rinse your mouth with water after brushing. Spit out the excess toothpaste and leave it at that. Rinsing washes away the concentrated fluoride that’s sitting on your teeth, and that fluoride needs contact time to strengthen enamel and prevent cavities. The NHS specifically recommends against rinsing immediately after brushing for this reason.
If you use mouthwash, use it at a separate time from brushing, like after lunch, so it doesn’t displace the fluoride from your toothpaste.
Timing and Frequency
Two minutes, twice a day. Most people overestimate how long they brush. Set a timer on your phone or use the built-in timer on an electric brush until you develop a feel for it. A simple way to divide the time: 30 seconds per quadrant (upper right, upper left, lower right, lower left).
Brush in the morning and before bed. If you can only brush once, nighttime is more important. Saliva flow drops while you sleep, so bacteria have hours of uninterrupted time to produce acid if food particles remain on your teeth. Wait at least 30 minutes after eating acidic foods (citrus, coffee, soda) before brushing. Acid softens enamel temporarily, and brushing during that window can wear it away.
Common Mistakes That Undo Good Technique
- Sawing back and forth across the whole arch. Long horizontal strokes miss the gumline and concentrate pressure on the canines and premolars, leading to uneven wear.
- Skipping the tongue side of teeth. The inner surfaces collect just as much plaque, but most people spend the majority of their time on the outer surfaces they can see.
- Using a worn-out brush. Frayed bristles lose their stiffness and can’t reach into the gum margin. If your brush looks like it survived a windstorm, it stopped being effective weeks ago.
- Brushing right after vomiting or acid reflux. The same 30-minute rule for acidic foods applies here. Rinse with water or a baking soda solution first, then wait.