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目的通过比较两种氧化锆全瓷冠的临床美学效果,探讨全解剖式氧化锆全瓷冠的临床应用前景。方法 2015年11月至2016年4月于中国医科大学附属口腔医院修复二科行前牙及前磨牙固定义齿美学修复患者87例,随机分为两组,研究组42例应用TRIOS口内扫描仪获取三维数字模型,切削制作“TT”玉瓷全解剖式氧化锆全冠;对照组45例硅橡胶取模,常规制作“HT”瓷倍健有饰瓷氧化锆全瓷冠。修复完成后,由患者本人从5个方面对修复体满意度进行评分。3名修复科医生根据由Ryge评价标准改编的评分系统对两组修复体的美观性进行评分。修复体完成后按照改良公共卫生署(USPHS)标准对两组修复体进行随访评价。结果研究组患者对修复体的满意度在颜色分布、个体特征方面低于对照组(P<0.05)。临床医生对修复体美观性评分,研究组为(1.838±0.169)分,与对照组[(1.631±0.149)分]比较差异无统计学意义(P>0.05)。修复体随访结果显示,研究组在边缘适合性、牙龈反应、修复体完整性方面优于对照组(P<0.05)。结论全解剖式氧化锆全瓷冠在前牙及前磨牙美学修复中显示出较高的美学特性,具有较好的临床应用前景。
Objective To compare the clinical aesthetic effects of two kinds of zirconia all-ceramic crowns and discuss the clinical application prospect of all-anatomical zirconia all-ceramic crowns. Methods From November 2015 to April 2016, 87 patients with anterior teeth and premolar prosthetic denture amending in the Second Affiliated Stomatological Hospital of China Medical University were randomly divided into two groups. The study group received 42 cases with TRIOS intraoral scanner Three-dimensional digital model, cutting production “TT ” jade porcelain full anatomy zirconia crown; control group 45 cases of silicone rubber mold, conventional production “HT ” porcelain times health porcelain zirconia all-ceramic crown. After the repair is completed, the patient’s satisfaction with the prosthesis is scored in five aspects. Three prostheses rated the aesthetics of the two sets of prostheses according to a scoring system adapted from the Ryge evaluation criteria. After the prosthesis was completed, follow-up evaluations of the two sets of prostheses were performed according to the USPHS criteria. Results The satisfaction of patients in study group with prosthesis was lower than that of control group in color distribution and individual characteristics (P <0.05). Clinicians scored aesthetics of prosthesis, the study group was (1.838 ± 0.169) points, compared with the control group [(1.631 ± 0.149) points] there was no significant difference (P> 0.05). The follow-up results of the restoration showed that the study group was superior to the control group in marginal suitability, gingival response and prosthesis integrity (P <0.05). Conclusion All-anatomical zirconia all-ceramic crowns showed higher aesthetic characteristics in the amending of anterior teeth and premolar, which has a good clinical application prospect.