Recent advances in understanding the fatigue and wear behavior of dental composites and ceramics

Autor(es)

Kruzic, Jamie J. ^[1] ; Arsecularatne, Joseph A. ^[2] ; Tanaka, Carina B. ^[1] ; Hoffman, Mark J. ^{[2, 1]} ; Cesar, Paulo F. ^[3]

Afiliação do(s) autor(es)

^[1] UNSW Sydney, Sch Mech & Mfg Engn, Sydney, NSW 2052 - Australia

^[2] UNSW Sydney, Sch Mat Sci & Engn, Sydney, NSW 2052 - Australia

^[3] Univ Sao Paulo, Sch Dent, Dept Biomat & Oral Biol, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS; v. 88, p. 504-533, DEC 2018.
• Citações Web of Science: 10

Resumo

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. (AU)

• Processo FAPESP: 17/11913-8 - Caracterização mecânica e biológica do compósito Y:TZP/TiO2 em função do teor de titânia e do tipo de superfície
• Beneficiário: Paulo Francisco Cesar
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/50290-6 - Mechanical and microbiological characterization of the novel bioactive composites
• Beneficiário: Flavia Gonçalves
• Modalidade de apoio: Auxílio à Pesquisa - Regular