Prior to sealant placement, which abrasive should be used to clean the tooth?

The use of pumice as an abrasive prior to sealant placement is important because it helps to effectively clean the tooth surface, removing plaque and debris that could impair the adhesion of the sealant. Pumice is a mild abrasive that can thoroughly scrub the enamel while being gentle enough not to cause damage to the tooth structure. This preparation step is crucial, as a clean surface ensures optimal bonding of the sealant, enhancing its longevity and effectiveness in protecting the tooth from decay.

Other cleaning methods, such as sandpaper, may not provide the necessary cleaning action or could modify the surface texture of the tooth in an undesirable way. Soap and water, while possibly effective for general cleaning, would not provide the same level of abrasion required for dental sealant preparation. Chlorhexidine, on the other hand, is an antimicrobial agent and does not have the abrasive qualities needed to scrub the enamel; its primary use is more for disinfection rather than physical cleaning. Thus, pumice is the most appropriate choice for preparing the tooth before the application of sealants.