两种印模方法制作全瓷高嵌体修复后牙牙体缺损的临床效果比较  

Comparison of the clinical effect of two impression methods for the repair of posterior tooth defects with all-ceramic onlays

作　　者：桂萍 GUI Ping(Yangzhou Stomatological Hospital,Yangzhou 225002,China)

机构地区：[1]扬州市口腔医院,225002

出　　处：《中国现代药物应用》2024年第18期50-53,共4页Chinese Journal of Modern Drug Application

摘　　要：目的 探讨两种印模方法制作全瓷高嵌体修复后牙牙体缺损的临床效果。方法 选取后牙牙体缺损患者80例,随机分为观察组和对照组,各40例。观察组采用椅旁计算机辅助设计/计算机辅助制造(CAD/CAM)系统进行数字化扫描,直接制取牙预备体数字化印模,制备全瓷高嵌体;对照组采用硅橡胶取模制备全瓷高嵌体。比较两组取模时间、取模时舒适度及修复效果。结果 观察组取模时间为(5.8±1.6)min,短于对照组的(10.2±2.1)min,差异具有统计学意义(P<0.05)。观察组取模舒适度A级、B级、C级占比分别为67.50%、32.50%、0,对照组分别为7.50%、80.00%、12.50%;观察组取模舒适度优于对照组,差异具有统计学意义(P<0.05)。观察组边缘密合度和颜色匹配度A级、B级、C级占比分别为90.00%、10.00%、0和87.50%、12.50%、0,对照组分别为67.50%、32.50%、0和65.00%、35.00%、0;观察组边缘密合度、颜色匹配度均显著优于对照组,差异具有统计学意义(P<0.05)。结论 椅旁CAD/CAM数字化扫描制作全瓷高嵌体修复后牙牙体缺损比常规硅橡胶取模制作全瓷高嵌体简洁、高效、舒适,且边缘密合度、颜色匹配度较高,值得推广。Objective To explore the clinical effect of two impression methods for the repair of posterior tooth defects with all-ceramic onlays.Methods 80 patients with posterior dental defects were selected and randomly divided into an observation group and a control group,each 40 cases.The observation group used chairside computer-aided design/computer-aided manufacturing(CAD/CAM)system to digitally scan and directly take digital impressions of tooth preparations to prepare all-ceramic onlays;the control group used silicone rubber impression to prepare all-ceramic onlays.The time of impression taking,comfort during impression taking and restorative results were compared between the two groups.Results The time of impression taking of(5.8±1.6)min in the observation group was shorter than(10.2±2.1)min in the control group,and the difference was statistically significant(P<0.05).The proportions of grade A,B and C comfort during impression taking were 67.50%,32.50%and 0 in the observation group,and 7.50%,80.00%and 12.50%in the control group.The comfort during impression taking of the observation group was better than that of the control group,and the difference was statistically significant(P<0.05).The proportion of edge density and color matching of grade A,B and C in the observation group were 90.00%,10.00%,0 and 87.50%,12.50%,0,and those in the control group were 67.50%,32.50%,0 and 65.00%,35.00%,0.The edge tightness and color matching of the observation group were significantly better than those of the control group,and the difference was statistically significant(P<0.05).Conclusion Chairside CAD/CAM digital scanning fabrication of all-ceramic onlays for restoration of posterior tooth defects is cleaner,more efficient,and more comfortable than conventional silicone rubber impression.It has high edge tightness and color matching,and is worthy of promotion.

关 键 词：数字化印模 硅橡胶取模 全瓷高嵌体 后牙牙体缺损 

分 类 号：R783.3[医药卫生—口腔医学]