髓腔固位型CAD/CAM氧化锆高嵌体在低龈距根管治疗后牙修复中的应用

Application of CAD/CAM Zirconia Onlay through Intramedullary Fixation in Posterior Teeth Repair with Low Occlusogingival Distance Root Canal Treatment

目的考察髓腔固位型CAD/CAM氧化锆高嵌体在低龈距根管治疗后牙修复中的应用效果.方法对完成根管治疗的74例(78颗患牙)后牙龈距较低及咬合较紧患者采用髓腔固位型CAD/CAM氧化锆高嵌体进行修复.结果本组患者在3 a的随访过程中,未发生有修复体折裂及继发龋等不良情况,仅有3例患者分别于粘接后8个月、12个月以及23个月出现高嵌体脱落,但经重新备洞并再次粘结后,随访至今未再脱落,整体粘接后稳固率为95.9%(71/74);另外在边缘密合性、牙龈情况、食物嵌塞、颜色匹配、冠的完整性、基牙松动或折裂以及修复体松动或脱落等方面均达到了颇为良好的效果.结论髓腔固位型CAD/CAM氧化锆高嵌体在低龈距根管治疗后牙修复中的应用效果满意,值得进一步研究推广应用.

Objective To examine the application effect of CAD/CAM zirconia onlay through intramedullary fixation in posterior teeth repair with low occlusogingival distance root canal treatment.Methods CAD/CAM zirconia onlay through intramedullary fixation was used in posterior teeth repair to 74 cases（78 teeth） of low occlusogingival distance who had received root canal treatment.Results In the 3 years of follow- up of this group of patients,there were no prosthesis folding crack and secondary caries, and only 3 cases of bonding onlay body falling eight months, 12 months and 23 months, respectively after treatment, but no onlay body falling after recavity and fixation, the integral adhesive rate was 95.9%（71/74）.The edge adhesion, gums condition, food impaction,color matching, integrity of crown,loose abutment or fold crack and prosthesis loosening or abscission had reached good effect.Conclusion CAD/CAM zirconia onlay through intramedullary fixation has good application effect in posterior teeth repair with low occlusogingival distance root canal treatment,and it is worth popularizing.