改良垂直型牙体预备技术在后牙区全锆冠修复治疗效果评价  

Evaluation of the effect of modified vertical tooth preparation technique in monolithic zirconium crowns restoration in posterior area

作　　者：许晓波[1,2,3] 龚语林 沈丽丽[5] 王冕 王玉婷[1,3] 吴映燕[6] Xu Xiaobo;Gong Yulin;Shen Lili;Wang Mian;Wang Yuting;Wu Yingyan(Hefei Clinical College of Stomatology,Anhui Medical University,Hefei 230061;The Fifth Clinical College of Anhui Medical University,Hefei 230032;Dept of Special Needs,Hefei Stomatological Hospital,Hefei 230061;Dept of Prosthetic Technology,Hefei Stomatological Hospital,Hefei 230061;Dept of Implantation,Affiliated Stomatological Hospital of Anhui Medical University,Hefei 230022;College of Stomatology,Anhui College of Medicine,Hefei 230601)

机构地区：[1]安徽医科大学合肥口腔临床学院,合肥230061 [2]安徽医科大学第五临床学院,合肥230032 [3]合肥市口腔医院特需科,合肥230061 [4]合肥市口腔医院修复工艺科,合肥230061 [5]安徽医科大学附属口腔医院种植科,合肥230022 [6]安徽省高等医学专科学院口腔医学院,合肥230601

出　　处：《安徽医科大学学报》2024年第10期1881-1885,共5页Acta Universitatis Medicinalis Anhui

基　　金：安徽省卫生健康委科研项目(编号:AHWJ2021a041);安徽医科大学校科研基金项目(编号:2021xkj249)。

摘　　要：目的评价改良垂直型牙体预备在后牙区全锆冠修复治疗效果。方法采用随机数法对照研究,收集就诊并完成后牙区全瓷冠修复的84例患者共90颗全冠修复体,随机分组,其中实验组45颗全瓷冠修复治疗时,运用改良垂直型牙体预备基牙,对照组45颗患牙采用常规水平型牙体预备后完成全锆冠修复治疗。在患者戴牙时,分别评价两组修复体的修复效果,再采用硅橡胶复制法测量两组修复体冠的边缘和内部适合性;戴牙后6个月记录修复体周围的牙周指标牙龈指数(GI)和龈沟出血指数(SBI)评分值。结果两组修复体椅旁评价结果是实验组修复体的边缘适合性A级评价优于对照组修复体,差异有统计学意义(P=0.036);实验组修复体边缘适合性测量值优于对照组修复体,差异有统计学意义(P<0.001);6个月后复查时,两组修复体无机械并发症出现,牙周软组织指标GI和SBI评分值差异无统计学意义。结论改良垂直型牙体预备基牙能显著提升全瓷冠的边缘适合性,不会改变冠周牙龈健康状况。Objective To evaluate the effect of modified vertical tooth preparation with full zirconium crown restoration in molar area.Methods A randomized study was conducted in 84 patients with all-ceramic crown restoration of posterior teeth.90 full crown restorations were collected and randomly divided into two groups:45 teeth in experimental group were treated with modified vertical tooth preparation,while 45 teeth in control group were treated with conventional horizontal tooth preparation with full zirconium crown restoration.When patients wore teeth,the restoration effects of the two groups were evaluated respectively,and then the marginal and internal fitness of the two groups were measured by silicone rubber replication method;gingival index(GI)and sulcus bleeding index(SBI)scores were recorded 6 months after wearing teeth.Results The results of chair-side evaluation of the two groups showed that the marginal fitness of the experimental group was better than that of the control group,and the difference was statistically significant(P=0.036);the measured value of marginal fitness of prostheses in experimental group was better than that in control group,and the difference was statistically significant(P<0.001);after 6 months,there was no mechanical complication between the two groups,and there was no significant difference in GI and SBI scores of periodontal soft tissue indexes.Conclusion Modified vertical tooth preparation abutment can significantly improve the marginal fitness of all-ceramic crown,which will not change the health status of peri-crown gingiva.

关 键 词：后牙区 垂直型牙体预备 无肩台牙体预备 单层氧化锆冠 适合性 

分 类 号：R783.3[医药卫生—口腔医学]