口腔修复材料对牙本质的磨损性能的研究

发布时间：2018-06-24 15:09

本文选题：口腔修复材料 + 牙本质　；参考：《实用口腔医学杂志》2017年01期

【摘要】：目的:研究牙色材料与天然牙本质之间磨损性能的匹配情况。方法:以牙本质为研究对象,以实验组高度抛光的聚合瓷、玻璃陶瓷、氧化锆为摩擦剂,模拟口腔环境,利用微摩擦磨损实验机,研究牙本质与不同材料之间的摩擦磨损性能。采用扫描电镜观察表面形貌,粗糙度仪测粗糙度,维氏硬度仪测表面硬度,电子天平测磨损量。结果:牙本质与3种材料粗糙度近似(P0.05),硬度小于3种材料(P0.05)。牙本质与3种材料分别对磨后材料的磨损量大于牙本质对照组的磨损量(P0.05),牙尖牙本质的磨损量与3种材料及牙本质的硬度值呈显著正相关关系(r=0.840)。其中聚合瓷组的牙本质磨损量与对照组最接近。结论:不同材料对牙本质均会造成不同程度的磨损,聚合瓷具有与牙本质相近的耐磨性能。
[Abstract]:Objective: to study the matching of wear properties between tooth color materials and natural dentin. Methods: dentin was used as the object of study. The friction and wear properties between dentin and different materials were studied by using micro-friction and wear test machine with the highly polished polymeric porcelain, glass ceramics and zirconia as friction agent in the experimental group. The surface morphology was observed by SEM, roughness was measured by roughness meter, hardness was measured by Vickers hardness instrument, and wear amount was measured by electronic balance. Results: the roughness of dentin was similar to that of three materials (P0.05), and the hardness of dentine was less than 3 kinds of materials (P0.05). The wear amount of dentine and three kinds of materials were higher than that of dentine control group (P0.05). There was a significant positive correlation between the wear amount of cusp dentin and the hardness of three materials and dentin (r = 0.840). The dentin wear of the polymerized porcelain group was the most close to that of the control group. Conclusion: different materials can cause different degrees of wear on dentin, and the wear resistance of polymerized porcelain is similar to that of dentin.
【作者单位】：华北理工大学口腔医学院;
【基金】：清华大学摩擦学国家重点实验室开放基金资助项目(编号:SKLTKF15B15)
【分类号】：R783.1

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