CAJ | 학술논문

目的：研究牙科氧化锆瓷的摩擦磨损性能以及与天然牙釉质摩擦磨损性能匹配情况。方法微摩擦磨损试验机上，以滑石瓷为对磨物，人工唾液润滑下对Upcera ST 和 Zenostar Zr Translucent氧化锆瓷、牙釉质和饰面瓷进行摩擦磨损实验。实验前，用激光共聚焦显微镜测试件表面粗糙度Ra；实验结束后，光学显微镜下观察滑石瓷磨斑形貌、测量滑石瓷磨斑面积；激光共聚焦显微镜测量试件磨斑宽度；扫描电镜下观察试件磨斑的微观形貌。采用单因素方差分析进行统计学分析。结果饰面瓷的磨斑宽度大于其它3种材料(P<0．01)，饰面瓷对磨物滑石瓷磨斑面积大于氧化锆瓷和牙釉质(P<0．05)。结论与饰面瓷对比，氧化锆瓷具有更佳耐磨性及较低对磨物磨损，并且与天然牙釉质的磨擦学性能相似。
목적：연구아과양화고자적마찰마손성능이급여천연아유질마찰마손성능필배정황。방법미마찰마손시험궤상，이활석자위대마물，인공타액윤활하대Upcera ST 화 Zenostar Zr Translucent양화고자、아유질화식면자진행마찰마손실험。실험전，용격광공취초현미경측시건표면조조도Ra；실험결속후，광학현미경하관찰활석자마반형모、측량활석자마반면적；격광공취초현미경측량시건마반관도；소묘전경하관찰시건마반적미관형모。채용단인소방차분석진행통계학분석。결과식면자적마반관도대우기타3충재료(P<0．01)，식면자대마물활석자마반면적대우양화고자화아유질(P<0．05)。결론여식면자대비，양화고자구유경가내마성급교저대마물마손，병차여천연아유질적마찰학성능상사。
Objective To evaluate the zirconia ceramics ’ friction and wear behaviors to compare with natural enamel. Methods In a micro friction and wear testing apparatus, the friction and wear tests on Upcera ST,Zenostar Zr Translucent,teeth enamel and veneering ceramic were carried out under artificial saliva lubrication condition and steatite served as antagonist. Before wear test, surface roughness ( Ra) was determined by laser scanning confocal microscope. After test , the wear morphology of steatite was observed under light microscope and the wear area measured. The width of the wear area was measured by laser scanning confocal microscope and the scanning electron microscopy was used to observe the wear surface micro-morphology of the ceramics and enamel. Statistical analysis was performed using one-way analysis of variance (ANOVA). Results The width of the wear area on the veneering ceramic was greater than other three materials(P <0. 01). Veneering ceramic caused significantly higher antagonist wear than zirconia and teeth enamel ( P< 0. 05 ) . Conclusion Zirconia ceramics yielded superior wear resistance and lower antagonistic wear compared to veneering porcelains and achieved wear properties similar to natual enamel.