In one sentence, describe what the following article is about:

Most healthy people will need to see their dental health care provider twice a year.   When you see your dentist, you should get a dental cleaning. Your dentist or hygienist will use dental instruments to remove plaque and tartar from your teeth. They will then polish them with a special toothpaste. Most dentists will recommend dental X-rays at least once a year. This can help your dentist see if you have any problems inside your teeth. Your dentist will check each tooth for cavities as well as examine your gums for signs of gum disease. These are plastic preventive sealant coverings for your teeth.  These seal off the crevices on your teeth where food gets stuck.  Sealants protect the enamel against acid and plaque and are recommended for both children and adults. The Centers for Disease Control and Prevention suggest that school age children should have dental sealants, as they can reduce tooth decay in children by over 70%.  These sealants can last up to 10 years before they will need to be replaced. Your dentist will need to check them regularly at 6 month checkups to make sure they are intact. If you don't drink tap water or use fluoride toothpaste, you may need fluoride treatments.   Fluoride treatments are typically done in the office during your dental cleaning. Your dentist will fill up trays with a fluoride gel or paste. These will need to sit in your mouth and on your teeth for several minutes. These treatments can help to strengthen your enamel.
See your dentist and dental hygienist for regular cleanings and checkups. Ask your dentist about sealants. Talk to your dentist about fluoride treatments.