Oklahoma Pit and Fissure Sealants State Practice Exam

What should be avoided immediately after cleaning the tooth surface to maximize sealant effectiveness?

1. Fluoride application

2. Washing the area

3. Using a rubber dam

4. Placing a cotton roll

The correct answer is: Fluoride application

To maximize the effectiveness of sealants, it's important to avoid applying fluoride immediately after cleaning the tooth surface. The utilization of fluoride, particularly in the form of varnish, can create a barrier that inhibits the sealant from adequately bonding to the tooth surface. Sealants are most effective when they are able to form a strong bond with a clean, dry tooth surface. Ensuring that the surface is free from contaminants, including fluoride residues, allows for optimal adhesion of the sealant material. While cleaning the surface and preparing it for sealant placement is crucial, certain actions, such as applying fluoride right after cleaning, can interfere with the desired chemical bond between the tooth structure and the sealant. This is why careful timing of fluoride treatments in relation to sealant application is important in clinical practice. The other choices, such as washing the area or using a rubber dam, are typically part of the preparatory process before sealant application. They contribute to maintaining a clean working environment and may enhance the effectiveness of the procedure. Placing a cotton roll is also a common practice to absorb moisture and keep the area dry, which is beneficial for the sealant application process.