Which tooth surfaces are not normally susceptible to pit and fissure decay?

The facial surface of maxillary molars is not typically susceptible to pit and fissure decay due to its anatomy and position. The facial surfaces of molars are relatively smooth compared to the occlusal surfaces where pits and fissures are more commonly found. These occlusal surfaces, characterized by their complex grooves and depressions, create areas where plaque can accumulate, leading to decay. In contrast, the facial surface tends to be exposed to the cleaning action of the buccal frenums and the self-cleansing mechanisms of the tongue and cheeks.

In summary, while pits and fissures on the occlusal surfaces of teeth can trap food and bacteria, leading to caries, the facial surface of maxillary molars generally does not have these irregularities, making it less prone to pit and fissure decay. This understanding is crucial for dental practices focused on maintaining oral health and preventing caries.