[Wear study of dental restoration materials with a new study-system in vitro].
OBJECTIVE
To investigate abrasive wear of composite resins in vitro.


METHODS
A chewing simulator was used to perform the abrasive wear of four composite resins in vitro and an accurate three-dimensional laser-scanning system was used to measure the abrasion los of the materials.


RESULTS
According to worn volumes, the order of five materials is: Enamel < Targis Dentin < Dentacolor < Artglass < Vita Zeta. According to the worn-depthest-points, the order of five materials is: Enamel < Targis Dentin < Artglass < Dentacolor < Vita Zeta.


CONCLUSIONS
Targis Dentin shows no significant difference on ware resistance from human enamel, while three other composite resins are poorer than human enamel. This system in vitro is effective, accurate, quick and economical.
Lü
X
X
Department of Biomedical Engineering, Southeast University, Nanjing 210096, China.
D003188:Composite Resins; D003743:Dental Enamel; D003764:Dental Materials; D003793:Dental Restoration, Permanent; D005899:Glass Ionomer Cements; D006801:Humans; D012823:Silicate Cement
D003188:Composite Resins; D003764:Dental Materials; D005899:Glass Ionomer Cements; C111282:dental polyglass; D012823:Silicate Cement