Are You Brushing Wrong? Dentists Reveal Four Common Tooth-Brushing Mistakes

Most of us think we brush our teeth correctly — twice a day, with a good scrub and a rinse. But dentists say many common habits may actually be harming our teeth more than helping them.

According to Dr. Praveen Sharma from the University of Birmingham, about half of UK adults will develop gum disease. One of the first warning signs? Bleeding gums.

“If your gums are bleeding or swollen, it’s a sign you need to brush better,” he explains.

Here are four common brushing mistakes many people make — and how to fix them.

1. Brush Well — Not Just Often

Brushing twice a day is ideal, but technique matters more than frequency.

“It’s better to brush once properly than twice quickly,” Dr. Sharma says.

If you can only manage one good session, make it in the evening — and don’t skip flossing. Interdental brushes, especially rubber ones, can make cleaning between teeth easier and less painful.

Use small circular motions. Focus on each tooth surface — outer, inner, and biting — and pay extra attention where the tooth meets the gum. That’s where gum disease starts.

2. Brush Before Breakfast

Most people brush right after eating. But brushing after acidic foods or drinks — like juice or coffee — can damage enamel.

“Ideally, brush before breakfast,” Dr. Sharma advises.

If you prefer brushing after eating, rinse with water first and wait at least 30 minutes. This helps protect your enamel.

3. Don’t Rinse After Brushing

It may feel strange, but dentists say: spit, don’t rinse.

Rinsing washes away concentrated fluoride from toothpaste, which needs time to protect teeth. Spit out excess foam and leave a thin layer on your teeth.

4. Pricey Toothpaste Doesn’t Mean Better Teeth

Don’t get fooled by flashy marketing. Dr. Sharma says any toothpaste works — as long as it contains fluoride.

“It doesn’t make much difference which brand you choose,” he says. “I buy whatever is on offer.”