Final Answer:
Pit and fissure sealants are especially useful during the caries-susceptible period.
Step-by-step explanation:
The term "caries-susceptible period" refers to the time in an individual's life when they are more prone to developing dental caries (cavities). This period typically occurs during the eruption of permanent molars and premolars, particularly in children and adolescents. Pit and fissure sealants are a preventive dental treatment specifically designed for this susceptible period. These sealants are applied to the occlusal surfaces of molars and premolars, filling in the deep pits and fissures where bacteria and food particles can easily accumulate.
By providing a protective barrier, sealants help to prevent the initiation and progression of dental caries during this critical time. The application of pit and fissure sealants is a proactive measure in maintaining oral health and preventing cavities, especially in areas prone to decay.