To what surfaces are sealants most frequently applied?

Sealants are most frequently applied to the difficult-to-clean occlusal surfaces of the teeth because these areas are more prone to decay due to their complex anatomy, which includes deep grooves and pits. These occlusal surfaces can trap food and plaque, making them harder to clean effectively with regular brushing and dental hygiene practices. By applying sealants, a protective barrier is created that helps to prevent the accumulation of food particles and bacteria, thereby reducing the risk of caries.

In contrast, while sealants can technically be applied to various tooth surfaces, they are not typically used on the anterior (front) surfaces of teeth, which are flatter and easier to clean. Additionally, sealants are not intended for smoother surfaces, nor are they designed for application around the gum line, which requires different types of treatments or preventative measures. The primary function of sealants is to protect areas that are more susceptible to decay, specifically the occlusal surfaces with their intricate features.