| Abstrakt: |
The article discusses the issue of dental restorations, such as crowns and composites, coming off or loosening. The author explains that there are two main types of retention for dental restorations: mechanical interlocking retention and chemical retention. Mechanical retention relies on irregularities in the tooth structure to create a physical impediment to the material coming off, while chemical retention involves molecular contact between the adhesive and the tooth surface. The author also highlights the difference between enamel and dentin bonding, stating that enamel bonding provides stronger and longer-lasting retention compared to dentin bonding. The article provides various methods to enhance mechanical retention, such as creating undercuts, using irregular surfaces, and making grooves on the tooth preparation. The author emphasizes the importance of mechanical retention in many clinical situations, as conventional bonding agents may not provide long-term retention. [Extracted from the article] |
