CAJ | 학술논문

目的：评价Lava无饰瓷二氧化锆冠修复后牙牙体缺损的临床疗效。方法在我院口腔修复科门诊选择62例后牙需全冠修复的患者，采用Lava系统制作73颗无饰瓷二氧化锆冠，运用树脂水门汀粘固全冠。修复后，在2周、6个月、1年、2年、3年复诊进行临床检查。评价指标如下：冠的折裂情况、颜色、解剖形态、边缘密合度、冠边缘有无龋、冠边缘着色。结果在73颗无饰瓷二氧化锆冠修复体中，只有5颗冠的边缘着色（C级），采用二氧化锆口内抛光套装成功去除色素沉着。所有无饰瓷二氧化锆冠在破损折裂情况、冠颜色、解剖形态、冠边缘的密合度、冠边缘有无龋均被评为A级。结论采用Lava无饰瓷二氧化锆冠能成功修复后牙牙体缺损，同时避免了饰面瓷的崩瓷问题，此外减少了牙体预备量，保留了更多的残余牙体组织。
목적：평개Lava무식자이양화고관수복후아아체결손적림상료효。방법재아원구강수복과문진선택62례후아수전관수복적환자，채용Lava계통제작73과무식자이양화고관，운용수지수문정점고전관。수복후，재2주、6개월、1년、2년、3년복진진행림상검사。평개지표여하：관적절렬정황、안색、해부형태、변연밀합도、관변연유무우、관변연착색。결과재73과무식자이양화고관수복체중，지유5과관적변연착색（C급），채용이양화고구내포광투장성공거제색소침착。소유무식자이양화고관재파손절렬정황、관안색、해부형태、관변연적밀합도、관변연유무우균피평위A급。결론채용Lava무식자이양화고관능성공수복후아아체결손，동시피면료식면자적붕자문제，차외감소료아체예비량，보류료경다적잔여아체조직。
Objective To evaluate clinical effects of Lava full-contour CAD/CAM zirconia crowns for posterior teeth. Methods Sixty two patients participated in the present study. Seventy three Lava full-contour CAD/CAM zirconia crowns were made on posterior teeth. All of the crowns were cemented using resin cement. Evaluating the cases of crown fracture, color of the crown, contour, marginal fitness, secondary caries, marginal color change at two weeks, three months, half a year, one year, two years and three years following delivery. Results Lava full-contour zirconia crowns demonstrated good fracture resistance, and no fracture were found. All of 73 crowns were grouped into A-level in color, contour, marginal fitness, secondary caries. There were only 5 crowns suffered from marginal color change. Conclusion The full-contour CAD/CAM zirconia crowns are good restorations for posterior teeth defect. It contributes to avoid the incidence of veneering porcelain fracture, and conserve more residual tooth structure.