In Europe children in public schools get dental checkups and usually have the contact surfaces of their molars "filled" even before there is a cavity at all! That is, the naturally formed cracks are coated over with a resin to prevent germs from settling in to these vulnerable areas.
A couple of class sessions are set aside, too, for instruction. Besides showing the proper way to brush teeth and floss, instructors often have the kids first brush and then give them a gum which naturally stains the "yucky places." They are usually impressed to see all that green on the places they missed and try (at least for a time) to do a better job at it.
And did you know.....
....carbonated drinks are so devastating to enamel that it's not even a good idea to brush your teeth immediately after drinking them; you should rather rinse your mouth with water and wait 5-10 minutes first. Better yet, avoid them like the plague....
In addition to the great previous answer I want to add that cavities are best prevented from the inside out. People may have a tendency to get cavities just like others have a propensity to get osteosporosis.
If you have a pronness to brittle nails, and brittle bones, chances are you might also be prone to cavities, no matter how well you take care of your teeth. So, in addition to the recommendations above, you can treat cavities from the inside out by:
Adding lots of calcium to your diet
Reducing carbohydrates, especially snacking them frequently
Eat dark, leafy veggies and green tea to obtain flouride naturally aside from your toothpaste.
Are you just asking what can be done to prevent cavities? If so, there are many things that can be done to help prevent cavities. Of course, none of this can be 100% effective. Some ways to prevent cavities include:
- Eat foods that promote good tooth health. Eat foods that do not get stuck between the teeth for a long time. Also eat foods that make saliva flow more freely.
- Drink tap water rather than bottled water if the tap water has flouride in it (most US water has flouride added).
- Don't eat and drink too often
- Brush and floss regularly
- Get your teeth cleaned regularly and get extra flouride applied to your teeth by the dentist
- Use medicated mouthwashes
To prevent cavities one needs to maintain good oral health and eat a balanced healthy diet. One of the best methods for preventing cavities is to brush and floss one's teeth two to three times a day. Flossing removes the plaque caught between the teeth while brushing removes food particles and plague off of the teeth. Eating a diet low in sugar products and acids, cola for example, also helps to prevent tooth decay which causes cavities. Regular dental check-ups helps to locate problem areas which can be addressed using the previous mentioned tasks of brushing and flossing. A healthy diet which includes calcium rich foods promotes healthy teeth.