Proper brushing takes at least two minutes, twice a day, using a technique that angles the bristles toward your gumline rather than scrubbing straight across. Most people rush through it or use the wrong motion, which leaves plaque behind even when they brush consistently. Here’s exactly how to do it right.
Before You Start: Floss First
Flossing before you brush, not after, leads to better results. A clinical study found that flossing first did a better job of reducing certain types of dental plaque compared to brushing first. It also cleared debris from between teeth so the fluoride in your toothpaste could reach more enamel surface. Think of it as sweeping the floor before you mop.
Step-by-Step Brushing Technique
The method most dentists recommend is called the Modified Bass technique. It sounds clinical, but the motions are simple once you get the hang of them.
Step 1: Apply toothpaste. Use a pea-sized amount of fluoride toothpaste. Look for a product containing 1,350 to 1,500 parts per million (ppm) of fluoride, which is the range supported by strong evidence for cavity prevention. This information is on the packaging or the tube itself.
Step 2: Angle the brush at 45 degrees to your gumline. Don’t hold the brush flat against your teeth. Tilt it so the bristle tips point where the tooth meets the gum. This is the spot where plaque builds up fastest and where gum disease starts.
Step 3: Use short, gentle back-and-forth strokes. Cover one or two teeth at a time. The strokes should be small, about a tooth’s width. After a few short strokes on each spot, sweep the brush away from the gumline toward the biting edge of the tooth. This flicks plaque out of the gum pocket rather than pushing it deeper in.
Step 4: Work through every surface systematically. Start on the outer surfaces of your upper teeth, moving from one side to the other. Then do the inner surfaces of the upper teeth. Repeat both passes on the lower teeth. Finally, brush the flat chewing surfaces with a simple back-and-forth motion. Going in a consistent order prevents you from missing sections.
Step 5: Brush the inside of your front teeth vertically. For the inner surfaces of your front teeth, top and bottom, tilt the brush upright and use gentle up-and-down strokes with the toe (tip) of the brush head. These areas are awkward to reach with the brush held horizontally.
Step 6: Brush your tongue. Bacteria on the tongue contribute to bad breath and redeposit onto clean teeth. A few gentle strokes from back to front is enough.
Step 7: Spit, but don’t rinse. This is the step most people get wrong. After brushing, spit out the excess toothpaste but skip the water rinse. Fluoride strengthens enamel, and leaving it on your teeth for at least 15 minutes after brushing makes the enamel more resistant to cavity-causing acids. Rinsing with water, or even mouthwash (which typically contains less fluoride than toothpaste), washes that benefit away. If you’re prone to cavities, skipping the rinse is especially worth adopting.
How Much Pressure to Use
Less than you think. Research suggests that about 300 grams of force is the most effective brushing pressure for both children and adults. Forces above that threshold tend to cause pain and gum bleeding. For reference, 300 grams feels like lightly pressing a pen against your palm. If your bristles are splaying outward within a few weeks, that’s a clear sign you’re pushing too hard.
Aggressive brushing doesn’t clean better. It wears down enamel and causes gum recession over time, exposing the more sensitive root surfaces of your teeth. Let the bristles do the work.
Manual vs. Electric Toothbrushes
Both work, but electric toothbrushes have a measurable edge. A large review covering more than 5,000 participants found that after three months of using an electric toothbrush, people had 21% less plaque and 11% less gum inflammation compared to manual brushing. The oscillating and vibrating motions make it easier to hit that two-minute mark and maintain consistent pressure. Many electric models also have built-in pressure sensors that alert you when you’re pushing too hard.
If you use a manual brush well and consistently, you can absolutely keep your teeth healthy. But if you tend to rush, brush too hard, or have dexterity issues, an electric brush can compensate for those habits.
Timing Around Meals
Brushing right after eating, especially after acidic foods or drinks like citrus, coffee, soda, or wine, can damage your enamel. Acid temporarily softens the outer layer of your teeth, and brushing while it’s softened scrubs enamel away. Wait at least 60 minutes after eating acidic foods before brushing. If you want to freshen up sooner, rinse with plain water or chew sugar-free gum to stimulate saliva, which neutralizes acid naturally.
The best times to brush are in the morning (after breakfast, with the 60-minute buffer if your breakfast is acidic) and right before bed. The bedtime session is the more important one because saliva flow drops while you sleep, giving bacteria hours of uninterrupted time to produce acid.
Choosing the Right Toothpaste
Fluoride content matters most. Stick with toothpastes in the 1,350 to 1,500 ppm fluoride range for routine daily use. Beyond fluoride, pay attention to abrasivity. Toothpastes are rated on a scale called Relative Dentin Abrasivity (RDA). Products rated 0 to 70 are low abrasivity and ideal for daily use, particularly if you have sensitive teeth. Products in the 71 to 100 range are medium abrasivity and still safe for everyday brushing. Whitening toothpastes often score higher on this scale, so using them daily over long periods can wear enamel down.
When to Replace Your Brush
The American Dental Association recommends replacing your toothbrush or electric brush head every three months. Worn, frayed bristles lose their effectiveness at removing plaque because they can no longer maintain the right angle against the gumline. If your bristles start splaying before the three-month mark, replace the brush sooner and ease up on your pressure. You should also swap to a new brush after recovering from an illness.