Oklahoma Pit and Fissure Sealants State Practice Exam

What material is commonly used to ensure sealants provide a protective barrier over the tooth surface?

1. Fluoride varnish

2. Composite resin

3. Glass ionomer

4. Dental cement

The correct answer is: Composite resin

The correct answer is composite resin, as this material is widely recognized for its ability to create a durable and effective seal over the tooth surface. Composite resins are tooth-colored materials that bond well to enamel and dentin, allowing them to effectively seal pits and fissures in teeth, particularly in molars where the risk of decay is higher. Their strength and resilience contribute to their popularity in preventive dentistry, especially in the application of pit and fissure sealants. In contrast, while fluoride varnish is beneficial for enhancing remineralization of enamel and providing systemic fluoride release, it does not create a physical barrier in the same way sealants do. Glass ionomer materials are also used for sealing and can provide some fluoride release, but they tend to have a lower wear resistance compared to composite resins. Dental cement, while useful for certain restorative purposes, is not typically employed in the sealing of pits and fissures due to its intended function being much different. This highlights the specific applicability of composite resins in creating a protective layer over tooth surfaces.