Sealants are kind of a layer applied on the biting surfaces of back teeth to prevent them from decaying.
They are applied just like a nail polish is applied on the nails.
They are especially required now –a-days since the dietary habits are changing. There is a tremendous increase in the consumption of chocolates etc & this has led to a massive increase in the incidence of cavities in children.
Most of the cavities in children start in the pits and fissures of the biting surface of the back teeth. Therefore, if we seal up the tooth surface before the cavitations starts we can protect the tooth against cavities. When the permanent teeth erupt, a sealant is applied on their biting surfaces. These are known as pit and fissure sealants. They protects the tooth against cavities.
Therefore, sealants must be applied on biting surfaces as soon as the teeth erupt.
It is better to seal, before the decay process starts. In fact, we have a recall system which reminds parents about their appointment for application of sealants and fluorides.
Better to seal up the tooth surface rather than to fill after cavities start.
Fluoride application & sealants are one of the most successful preventive dentistry techniques.
Pls also see the amateur video on sealants here.
Regards,
Dr. Veerendra Darakh