CAJ | 학술논문

目的：研究微波烧结工艺制作的Cercon氧化锆全瓷冠适合性。方法：选取1颗完好的离体前磨牙行全瓷冠牙体预备，双重印模法取模，翻制10个相同的环氧树脂代型，将代型随机分为2组，利用CAD／CAM制作Cercon全瓷冠后，分别用微波二次烧结和常规二次烧结，将制得的全瓷冠粘接、包埋、切割后利用扫描电镜（SEM）测量冠适合性。结果：两种烧结方法制作的冠的边缘间隙和轴面间隙差异均无统计学意义（P＞0．05），肩台间隙和牙合面间隙差异均有统计学意义（P＜0．05）。结论：利用微波二次烧结制作的Cercon全瓷冠具有与常规烧结氧化锆相似的冠边缘适合性，在临床的接受范围内。
목적：연구미파소결공예제작적Cercon양화고전자관괄합성。방법：선취1과완호적리체전마아행전자관아체예비，쌍중인모법취모，번제10개상동적배양수지대형，장대형수궤분위2조，이용CAD／CAM제작Cercon전자관후，분별용미파이차소결화상규이차소결，장제득적전자관점접、포매、절할후이용소묘전경（SEM）측량관괄합성。결과：량충소결방법제작적관적변연간극화축면간극차이균무통계학의의（P＞0．05），견태간극화아합면간극차이균유통계학의의（P＜0．05）。결론：이용미파이차소결제작적Cercon전자관구유여상규소결양화고상사적관변연괄합성，재림상적접수범위내。
Objective:To study the effect of different sintering method on the marginal and internal adaptation of Cercon zirconia crowns. Method:A first premolar teeth was prepared and replicated in to ten resin castes. The units were randomly assigned to two groups and the crowns were made by CAD/CAM system. Group one was sintered by manufacturers recommend conventional second-time sintering process. Group two was sintered by microwave second-time sintering process. All crowns adhered to the corresponding dies and compare their adaption through statistical analysis. Result:Marginal fit and axial plane of zirconia ceramic crowns sintered by two methods have no significant differences (P>0.05). Shoulder suitability and occlusal surface have significant differences (P <0.05).Conclusion:Microwave sintered Cercon zirconia crowns appeared to have clinically acceptable marginal fit.