Over time, the edges of the filling can wear down or may loosen the seal surrounding enamel, leaving a very small space between the tooth and the filling. This condition may allow bacteria to enter and cause decay in the margins (edges) of the filling.

Bacteria can not be removed once enter that space. Often the damage is not because there are no symptoms until the decay reaches the nerve of the tooth. Poor dental hygiene or poor diet, gum recession or lack of saliva can contribute to tooth decay.

If no treatment is given to recurrent caries can progress from the enamel to the dental pulp, the living center of the tooth.

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A good care of teeth includes a good oral hygiene with brushing teeth and flossing, using fluoride toothpastes, fed with low blood sugar and a healthy portion of milk (rich in calcium) and course, a periodic visit to the dentist.

Dental sealants, also known as sealants are thin plastic coatings that are placed on teeth to form a protective cover against cavities. The teeth of the children have small grooves that can not always be cleaned with a toothbrush, sealants cover these grooves and stay prevents food particles and germs.

It is a liquid that is applied to the tooth, the same which hardens quickly without causing discomfort or pain. The sealant protects the tooth up to 10 years, but it is always necessary to review to ensure that it is in good condition, otherwise apply more sealant.

Should apply only child has its permanent teeth, usually by 6 years of age, in some cases, dentists also apply the sealant in primary teeth with deep grooves. If the child has a small cavity and it has been applied to the sealer, there is no problem since the sealant will isolate it from germs and not be extended.