What is the primary purpose of a dental sealant?

The primary purpose of a dental sealant is to protect teeth from decay. Sealants are thin coatings applied to the chewing surfaces of the back teeth, particularly molars, where pits and grooves can trap food particles and bacteria. By filling in these grooves and creating a smooth surface, sealants can effectively prevent the accumulation of plaque and food debris, which significantly reduces the risk of cavities. This preventive measure is particularly beneficial for children and teenagers, as their newly erupted molars are especially vulnerable to decay. Sealants act as a barrier, making it much harder for bacteria to penetrate the enamel and cause tooth decay.

Other options do not align with the purpose of sealants. For instance, straightening misaligned teeth involves orthodontics, which is a different branch of dental treatment. Whitened teeth focus on cosmetic improvements rather than preventive care, and increasing tooth sensitivity is not a goal of dental treatments, as sensitivity is usually an undesirable condition that indicates potential issues.