National Dental Assisting Examining Board (NDAEB) Practice Exam

Zinc Phosphate cement is primarily used as what?

1. An aesthetic material

2. A luting agent for permanent restorations

3. A base for temporary fillings

4. A surface cleaner

The correct answer is: A luting agent for permanent restorations

Zinc Phosphate cement is primarily used as a luting agent for permanent restorations due to its strong adhesive properties and ability to withstand the forces exerted in the oral environment. Its formulation provides excellent compressive strength, making it suitable for cementing crowns, bridges, and other dental restorations. Additionally, zinc phosphate cement has properties that promote good retention of restorations. When mixed to the appropriate consistency, it forms a thin film that allows for precise seating of the restoration while ensuring that the bond remains intact over time. This quality is crucial in dental practice, as it helps achieve long-lasting restorations that can endure the pressures of chewing and other oral functions. While zinc phosphate cement has historical importance in restorative dentistry, it is not typically categorized as an aesthetic material, a base for temporary fillings, or a surface cleaner. These other uses are better suited for different materials that are specifically designed for those purposes.