Oklahoma Pit and Fissure Sealants State Practice Exam

What is the best technique for isolating teeth during sealant application?

1. Bite block

2. Rubber dam

3. Cotton rolls

4. Gauze strips

The correct answer is: Rubber dam

The rubber dam is considered the best technique for isolating teeth during sealant application because it provides a complete and effective barrier against moisture and contamination from saliva and blood, which is critical for achieving good adhesion of sealants. When applying sealants, it's essential that the tooth surface is dry and clean to ensure proper bonding. The rubber dam fully isolates the area being treated, allowing for a more controlled and optimal environment during the procedure. Moreover, the use of a rubber dam minimizes the possibility of the patient swallowing or aspirating any materials used during the application process, creating a safer environment. This isolation technique also allows the dental provider to have better visibility and access to the tooth surfaces, thus aiding in the accurate application of the sealant and increasing the chances of a successful outcome. Other methods such as bite blocks, cotton rolls, and gauze strips may provide some isolation, but they do not offer the same level of effectiveness as a rubber dam in terms of moisture control and overall protection. Consequently, for procedures that demand precision and cleanliness like sealant applications, the rubber dam is the superior choice.