You should brush your teeth twice a day for two minutes each time, angling the bristles toward your gum line and using short, gentle strokes. That’s the basic answer, but the details matter more than most people realize. Small habits like how hard you press, when you brush after eating, and what you do after you spit can all affect how well you’re actually protecting your teeth.
The Technique That Works Best
The most widely recommended brushing method is called the Modified Bass technique. Hold your toothbrush at a 45-degree angle so the bristles point toward your gum line, not straight at your teeth. Make short back-and-forth strokes, then sweep the brush away from the gums toward the biting edge of the tooth. This motion gets bristles slightly under the gum line where plaque builds up first, then flicks debris away.
Work through your mouth in a consistent order so you don’t skip areas. Most people do well starting with the outer surfaces of the upper teeth, then the inner surfaces, then moving to the lower teeth the same way. Finish with the chewing surfaces using a simple back-and-forth scrub. 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, which is longer than it sounds. Most people brush for under a minute without realizing it.
How Much Pressure to Use
Pressing harder does not clean better. Lab research shows that both soft and medium bristle toothbrushes cause significant abrasion to the root surfaces of teeth when used with moderate to heavy force. Interestingly, soft-bristled brushes actually caused more root surface abrasion than medium brushes at higher pressures, likely because the softer bristles flex and conform to the surface more. The takeaway: use light pressure regardless of your brush type. If your bristles are splaying outward within a few weeks, you’re pressing too hard.
A soft-bristled brush is the safest choice for most people. It’s firm enough to disrupt the sticky film of bacteria on your teeth but forgiving enough to avoid wearing down enamel and gum tissue over time.
Electric vs. Manual Brushes
Both work. A meta-analysis comparing the two found that a standard electric toothbrush reduced plaque by 86%, while a manual brush achieved 85%, a negligible difference. Where electric brushes may have an edge is consistency. Built-in timers keep you brushing for the full two minutes, and the motorized bristle action does some of the technique work for you. Sonic toothbrushes generate over 30,000 strokes per minute and create fluid movement that reaches into gaps bristles alone can’t access. If you already brush well with a manual brush, there’s no urgent reason to switch. If your technique is inconsistent or you have limited hand mobility, an electric brush is a worthwhile upgrade.
Choosing the Right Toothpaste
The only ingredient that truly matters in toothpaste is fluoride. It strengthens enamel and reverses the earliest stages of tooth decay before a cavity forms. The World Health Organization recommends toothpaste containing 1,000 to 1,500 parts per million (ppm) of fluoride for all age groups, including children. Formulations marketed specifically for kids often contain less than 1,000 ppm, but there’s no evidence that these lower-concentration pastes actually prevent cavities. Check the box for the fluoride concentration if you’re unsure.
You only need a pea-sized amount. More toothpaste doesn’t mean more protection; it just means more foam.
What to Do After You Brush
This is where most people unknowingly cancel out part of their brushing. After you finish, spit out the excess toothpaste but do not rinse your mouth with water. Rinsing washes away the concentrated fluoride that’s sitting on your teeth, reducing its protective effect. It feels counterintuitive, but leaving that thin film of toothpaste behind lets the fluoride continue working for hours.
For the same reason, don’t use mouthwash right after brushing, even a fluoride mouthwash. The fluoride concentration in mouthwash is lower than what’s in toothpaste, so swishing it around actually dilutes the protection you just applied. Use mouthwash at a separate time instead, like after lunch.
When Not to Brush
After eating or drinking anything acidic, wait at least an hour before brushing. Acidic foods and drinks (soda, sports drinks, citrus juice, sour candy) temporarily soften your enamel. Brushing while the enamel is in that softened state can physically scrub it away. If you want to clean your mouth sooner, rinse with plain water or chew sugar-free gum to help neutralize the acid. Save the brushing for later.
Don’t Skip Your Tongue
Your tongue is covered in tiny bumps called papillae that trap bacteria, dead cells, and food particles throughout the day. This buildup is a major source of bad breath because the bacteria produce sulfur compounds as they break down. Research shows that using a tongue scraper twice a day significantly reduces these odor-causing bacteria compared to tooth brushing alone. A metal tongue scraper works best. Place it at the back of your tongue and pull it forward in a single motion, rinsing the scraper between passes. Three to five strokes is usually enough.
Replacing Your Toothbrush
Swap your toothbrush (or electric brush head) every three to four months. Worn bristles lose their shape and can’t clean effectively, and they become rougher on your gums. Replace it sooner if the bristles look frayed or splayed, if you’ve been sick, or if it’s been contaminated in any way. A fresh brush head makes a noticeable difference in how well plaque comes off, especially along the gum line where it matters most.