Recent advances in understanding the fatigue and wear behavior of dental composites and ceramics. (December 2018)

• Record Type: Journal Article
• Authors: Kruzic, Jamie J.; Arsecularatne, Joseph A.; Tanaka, Carina B.; Hoffman, Mark J.; Cesar, Paulo F.
• Is Part Of: Journal of the mechanical behavior of biomedical materials. Volume 88(2018)
• Page Start: 504
• Page End: 533
• Publication Date: 2018-12
• Subjects: Fatigue -- Wear -- Dental restorations -- Ceramics -- Resin composites -- Enamel -- Secondary caries; Biomedical materials -- Periodicals; Biomedical materials -- Mechanical properties -- Periodicals; Biomedical materials; Biomedical materials -- Mechanical properties; Periodicals; Electronic journals; 610.28
• DOI: 10.1016/j.jmbbm.2018.08.008
• Languages: English
• ISSNs: 1751-6161

Abstract

Abstract: Dental composite and ceramic restorative materials are designed to closely mimic the aesthetics and function of natural tooth tissue, and their longevity in the oral environment depends to a large degree on their fatigue and wear properties. The purpose of this review is to highlight some recent advances in our understanding of fatigue and wear mechanisms, and how they contribute to restoration failures in the complex oral environment. Overall, fatigue and wear processes are found to be closely related, with wear of dental ceramic occlusal surfaces providing initiation sites for fatigue failures, and subsurface fatigue crack propagation driving key wear mechanisms for composites, ceramics, and enamel. Furthermore, both fatigue and wear of composite restorations may be important in enabling secondary caries formation, which is the leading cause of composite restoration failures. Overall, developing a mechanistic description of fatigue, wear, and secondary caries formation, along with understanding the interconnectivity of all three processes, are together seen as essential keys to successfully using in vitro studies to predict in vivo outcomes and develop improved dental restorative materials. Graphical abstract: Highlights: Dental restorations fail due to fatigue and wear in the complex oral environment. Material microstructure plays key role in restoration failure by fatigue and wear. The mechanistic processes of fatigue and wear are interrelated. Restoration failure by secondary caries is influenced by fatigue and wear mechanisms. Understanding the mechanistic processes of failure links in vitro and in vivo studies.