Fluoride varnish is a highly concentrated form of fluoride that provides extra protection against tooth decay when used in addition to brushing. Fluoride varnish is applied to the tooth’s surface with a soft brush by a dentist or dental hygienist. Research shows that fluoride varnish is highly effective at reducing tooth decay if applied twice a year.
Fluoride varnish can prevent about one-third (33%) of decay in the primary (baby) teeth.
Studies in children show that sealants reduce decay in the permanent molars by 81% for 2 years after they are placed on the tooth.
Source: Centers for Disease Control and Prevention; cdc.gov.
A dental sealants is a thin, plastic coating usually applied to the chewing surfaces of back teeth (premolars and molars). The sealant quickly bonds into the depressions and grooves of the teeth, forming a protective shield over the enamel of each tooth. It acts as a barrier to prevent tooth decay.
Permanent molars are the most likely to benefit from sealants. The first molars usually come into the mouth when a child is about 6 years old. Second molars appear at about age 12. It is best if the sealant is applied soon after the teeth have erupted, before they have a chance to decay.
Applying sealants does not require drilling or removing tooth structure. The process is short and easy. After the tooth is cleaned, a special gel is placed on the chewing surface for a few seconds. The tooth is then washed off and dried. Then, the sealant is painted on the tooth. The dentist or dental hygienist also may shine a light on the tooth to help harden the sealant. It takes about a minute for the sealant to form a protective shield.
Sealants can only be seen up close. Sealants can be clear, white, or slightly tinted, and usually are not seen when a child talks or smiles.
As with anything new that is placed in the mouth, a child may feel the sealant with the tongue. Sealants, however, are very thin and only fill the pits and grooves of molar teeth.
A sealant can last for as long as 5 to 10 years. Sealants should be checked at your regular dental appointment and can be reapplied if they are no longer in place.
No. Fluorides, such as those used in toothpaste, mouth rinse, and community water supplies also help to prevent decay, but in a different way. Sealants keep germs and food particles out of the grooves by covering them with a safe plastic coating. Sealants and fluorides work together to prevent tooth decay.
Sealants are one part of a child’s total preventive dental care. A complete preventive dental program also includes fluoride, twice-daily brushing, wise food choices, and regular dental care.
Decay damages teeth permanently. Sealants protect them. Sealants can save time, money, and the discomfort sometimes associated with dental fillings. Fillings are not permanent. Each time a tooth is filled, more drilling is done and the tooth becomes a little weaker.