National Dental Assisting Examining Board (NDAEB) Practice Exam

Cleaning the tooth surface before placing a sealant is essential to ensure better bonding. The effectiveness of sealants largely depends on their ability to adhere to the enamel surface. Any debris, plaque, or saliva present on the tooth can create a barrier that prevents proper adhesion of the sealant material. By cleaning the tooth thoroughly, the dental professional removes these substances, allowing the sealant to chemically bond to the tooth structure more effectively.

This process is critical because a well-bonded sealant provides a protective barrier against decay, particularly in the pits and fissures of molars, where caries commonly develop. While drying the tooth surface, protecting against decay, and enhancing esthetics are also important aspects of dental procedures, the primary focus when cleaning before sealant application is to achieve optimal bonding.