Wear matching performance of dental restoration materials oppositing to dentine
10.3969/j.issn.1001-3733.2017.01.005
- VernacularTitle:口腔修复材料对牙本质的磨损性能的研究
- Author:
Chenxi LI
;
Ruiying LIANG
;
Yanping ZHAO
;
Yanli XU
;
He MENG
- Keywords:
Dental restorative material;
Dentin;
Wear matching performance;
Friction and wear test
- From:
Journal of Practical Stomatology
2017;33(1):23-26
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To compare the wear resistance between dentin and dental restoration material in vitro.Methods:The friction and wear behaviors of natural tooth dentin respectively against highly polished polymer ceramic,glass ceramic and zirconia were investigated in an artificial saliva test environment by UMT-2 friction and wear testing machine.Worn surface morphology was observed by scanning electron microscopy(SEM),roughness was measured by roughness instrument,the rigidity value was weighed by electronic balance.Results:The roughness of the 3 materials was similar to that of dentin(P ＞ 0.05),the rigidity of dentin was less than that of the 3 materials (P ＜ 0.05).After friction and wear test,the abrasion quantity of dentin respectively against the 3 materials was less than that of the materials (P ＜ 0.05).There was positive correlation between the wear loss and the hardness of the 3 materials and dentin(r =0.846).The mass loss of the dentin against Poly Ceramic after grinding abrasion was the closest among the 3 materials.Conclusion:Different materials have varying degrees abrasion against dentine.The Polymer Ceramic has closer abrasion performancez with dentin than the other 2 materials.
