Preventive Care & Oral Hygiene – Dental Q&A
How should I brush my teeth properly?
Brush your teeth twice a day for two minutes using a soft-bristled toothbrush and fluoride toothpaste. Hold the brush at a 45-degree angle to the gums and use gentle circular or back-and-forth strokes. Brush all surfaces — outer, inner, and chewing. Replace your toothbrush every three months.
How often should I floss?
You should floss at least once a day, preferably before bedtime. Flossing removes plaque and food from between teeth where a toothbrush cannot reach. Skipping floss leaves roughly 35% of each tooth surface uncleaned, which is where many cavities and gum disease start.
Should I floss before or after brushing?
Floss before you brush. Flossing first loosens plaque and food particles from between teeth, and then brushing removes them from the mouth along with fluoride distributed by the toothpaste. Research suggests that flossing first leads to better fluoride retention between teeth.
Does mouthwash replace flossing?
No. Mouthwash does not replace flossing. Mouthwash rinses the surfaces of teeth and kills bacteria in saliva, but it cannot physically remove plaque and food stuck between teeth. Floss is the only way to clean the contact areas between teeth effectively.
What type of toothpaste should I use?
Use a toothpaste that contains fluoride — this is the most important feature. For most adults, an ADA-accepted fluoride toothpaste is all that is needed. Sensitive teeth may benefit from toothpaste with potassium nitrate or stannous fluoride. Children under age 3 should use a rice-grain amount of fluoride toothpaste.
What causes cavities?
Cavities form when bacteria in your mouth feed on sugars and produce acid, which slowly dissolves tooth enamel. The main risk factors are frequent sugar or starch consumption, poor brushing and flossing habits, dry mouth, and not getting enough fluoride. Cavities are largely preventable with consistent oral hygiene and regular dental visits.
How can I prevent cavities?
Prevent cavities by brushing twice daily with fluoride toothpaste, flossing once a day, limiting sugary and acidic foods, drinking fluoridated water, getting professional cleanings twice a year, and asking your dentist about sealants and fluoride treatments. These steps together dramatically reduce your cavity risk.
What are dental sealants and do I need them?
Dental sealants are thin plastic coatings painted onto the chewing surfaces of back teeth to prevent decay. They fill in the deep grooves where toothbrush bristles cannot reach and food debris accumulates. Sealants are most often recommended for children, but adults with deep grooves also benefit.
What is fluoride and why is it important for teeth?
Fluoride is a natural mineral that strengthens tooth enamel and helps prevent decay. It works by remineralizing early-stage cavities before they become holes and by making enamel more resistant to acid attacks from bacteria. Fluoride is found in most public water supplies, fluoride toothpaste, and professional dental treatments.
Can diet affect my dental health?
Yes, diet has a major impact on dental health. Sugars and refined carbohydrates feed cavity-causing bacteria. Acidic foods and drinks (citrus, soda, sports drinks) erode enamel over time. Foods high in calcium and phosphorus — dairy, nuts, leafy greens — help strengthen teeth.
Is electric toothbrush better than manual?
For most people, electric toothbrushes do a better job removing plaque than manual brushing. Studies show oscillating-rotating electric toothbrushes reduce gingivitis and plaque more effectively over time. However, a manual toothbrush used with proper technique twice daily is still effective.
Why are my gums bleeding when I brush?
Bleeding gums when brushing are most commonly a sign of gingivitis, the earliest stage of gum disease caused by plaque buildup along the gumline. Contrary to what many people think, bleeding gums are not normal — they are a signal that gum tissue is inflamed and needs attention.
Does dry mouth increase my risk of cavities?
Yes. Saliva is your mouth's natural defense against cavities — it neutralizes acids, washes away food, and delivers minerals to remineralize enamel. When saliva flow is reduced, cavity risk rises significantly. Common causes of dry mouth include certain medications, mouth breathing, and medical conditions like Sjögren's syndrome.
When should children start seeing a dentist?
Children should have their first dental visit by age one or within six months of their first tooth coming in, whichever comes first. Early visits establish a dental home, check that teeth are developing normally, and introduce children to dental care in a positive environment before problems arise.
Does smoking affect oral health?
Smoking significantly harms oral health. It causes tooth staining, bad breath, dry mouth, reduced ability to fight infection, slowed healing after procedures, and dramatically increases the risk of gum disease and oral cancer. Smokers are twice as likely to lose teeth compared to non-smokers.