Abstract:

BACKGROUND: Severe wear can lead to the loss of occlusal function or the crown restoration will be worn out, which directly affects the restoration results.
OBJECTIVE: To evaluate the wear property between different types of dental restoration materials and dental enamel, and to seek a material adapting to natural enamel.
METHODS: The first author retrieved PubMed database and Wanfang database from 1990 to 2010 for studies about dental repair materials and their wear relationships with dental enamel. English key words were “dental materials; composite resins; dental enamel; abrasive wear”, and Chinese key words were “enamel; repair materials; wear; porcelain; nanocomposite”. The repetitive research was excluded. Twenty papers meeting the inclusion criteria were included in further summary.
RESULTS AND CONCLUSION: Oral cavity is a complex electrolyte environment, the acidic diet, plaque accumulation, and bacterial metabolism can produce acidic substances. No matter inorganic or organic acid, the corrosion resistance of the metal can adversely affect the results. Metal materials have good chemical stability and strong corrosion resistance, which are associated with the passive film formed on the surface, whereas the non-metallic materials exhibit different degrees of corrosion resistance. The wear properties are the major factor of dental materials and the existing experimental studies mainly focus on the structure of dental materials and wear measurements. However, further research is required to conclusively determine the wear mechanism underlying dental materials.