Australian Dental Council (ADC) Practice Test

Marginal integrity refers specifically to the gap between the tooth structure and the filling material. It is a critical factor in restorative dentistry because proper marginal integrity is essential for preventing microleakage, which can lead to secondary caries and other complications. A well-sealed restoration will fit closely to the tooth, minimizing the amount of space where bacteria and debris can accumulate. Maintaining strong marginal integrity is vital for the longevity of dental restorations and the overall health of the tooth.

The focus on this aspect in relation to restorative procedures underscores the importance of accurate material application and adaptation techniques used by dental professionals to ensure effective seals at the margins of restorations. Understanding marginal integrity helps in evaluating the success of a restoration and in making informed decisions about the materials and techniques used.

Other aspects of restorations, such as the strength of the filling material, the smoothness of the restoration surface, and color match, are important considerations in their own right, but they do not encompass the definition of marginal integrity. These characteristics might enhance the overall performance and aesthetics but do not specifically address the critical fit between the tooth and filling which is essential to prevent future dental issues.