摘要
以高度抛光的玻璃陶瓷、聚合瓷、氧化锆、纯钛为摩擦副,模拟口腔环境,使用微摩擦磨损实验机进行天然牙釉质和牙本质的摩擦磨损实验。用扫描电镜观察表面形貌、用粗糙度仪测粗糙度、用维氏硬度仪测表面硬度、用电子天平测磨损量,研究了天然牙釉质和牙本质与不同修复材料之间的摩擦磨损性能。结果表明,釉质和牙本质分别与四种材料对磨后的磨损量与对照组均有统计学差异(P<0.05),对磨物的磨损量与四种材料及釉质、牙本质的硬度值呈显著正相关关系。其中牙本质与聚合瓷对磨后的磨损量与牙本质对照组最接近,釉质与玻璃陶瓷对磨后的磨损量与釉质对照组最接近。
The friction and wear behavior of the natural tooth enamel and dentin in sliding against a highly polished glass ceramic,polymer ceramic,zirconia and pure titanium respectively were investigated through a fretting friction and wear testing in an artificial saliva test environment by UMT-2 friction and wear testing machine.While the worn surface morphology was observed by scanning electron microscopy（SEM）,the roughness was measured by roughness instrument and the abrasion loss was weighed by an electronic balance.The results show that after friction and wear testing,the abrasion loss of the enamel and dentin against the four kind of materials all showed a statistically difference within P 0.05,which possessed significant positive correlation with the hardness of the four kinds restoration materials,the enamel and the dentin.The mass loss of the dentin against poly ceramic and the enamel against glass ceramic was the closest ones to that of the control group of the dentin.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2016年第7期489-495,共7页
Chinese Journal of Materials Research
基金
清华大学摩擦学国家重点实验室
关键词
口腔修复材料
摩擦磨损实验
耐磨损性能
釉质
牙本质
dental restorative material
friction and wear test
wear resistance
enamel
dentine
