What is a common indication for using sealants on teeth?

Using sealants on teeth is primarily indicated for areas with deep pits and fissures. These are the natural grooves found on the chewing surfaces of molars and premolars where food particles can easily accumulate and bacteria thrive, leading to a higher risk of cavities. The purpose of a sealant is to provide a protective barrier over these vulnerable areas, preventing plaque accumulation, and ultimately reducing the risk of dental caries.

In contrast, broad smooth surfaces don't typically require sealants since their design is less prone to trapping food and bacteria. Teeth without a history of caries also do not present the immediate need for sealants, as the risk of developing cavities is lower. Teeth that need whitening are unrelated to the functional purpose of sealants, which focus solely on the prevention of decay rather than cosmetic enhancement. Thus, the emphasis on protecting deep pits and fissures highlights why this indication is the most relevant for sealant application in dental practice.