不同纤维桩设计修复磨牙残根残冠:桩折断与固位力比较  

Fiber posts with different designs in the repair of molar residual roots and crowns:comparison of post fracture and retention

作　　者：杜劲英[1] 穆锦全[1] 李建[2] 许祥芹[1] 吴华英[1] 

机构地区：[1]南京市妇幼保健院口腔科,江苏省南京市210004 [2]南京医科大学附属口腔医院特诊科,江苏省南京市210029

出　　处：《中国组织工程研究》2015年第16期2500-2504,共5页Chinese Journal of Tissue Engineering Research

基　　金：南京医科大学科技发展基金(2014NJMU095)~~

摘　　要：背景:磨牙具多根、多根管、多方向、不同几何形态及分布等特点,以单根管牙桩核理论指导磨牙临床修复,磨牙牙根将因桩道制备过度而极易并发侧穿或根折,因此有必要对纤维桩-树脂核的磨牙修复设计进行进一步的研究和探讨。目的:评价不同桩数设计纤维桩-树脂核修复磨牙残根残冠的临床疗效。方法:选择48例54颗根充完善的人磨牙残根残冠,进行不同桩数的纤维桩-树脂核与全冠修复,其中单根纤维桩核修复17例20颗,双根纤维桩核修复16例18颗,3根纤维桩核修复15例16颗。随访观察24个月,比较修复效果。结果与结论:随访24个月,单根纤维桩组、双根纤维桩组、3根纤维桩组修复成功率分别为85%、94%、94%,3组间修复成功率比较差异无显著性意义;修复失败的5例中,单根纤维桩组发生纤维桩脱落3例,双根纤维桩组纤维桩脱落1例,3根纤维桩组纤维桩折断1例,均未发生根折。3种桩数设计的纤维桩-树脂核修复磨牙残根残冠均能获得较好的短期临床效果,没有因为桩的数目不同而降低修复效果。BACKGROUND： Molars are characterized by multi-root, multi-root canal, multi-directional, different geometric shape and distribution. Single-root canal teeth post-core theory was used to guide molar repair in the clinic. It is easy to cause root canal perforation or vertical fracture due to excessive post preparation. Therefore, it is necessary to make further study and investigation in the design of fiber post-resin core for repairing molars. OBJECTIVE： To evaluate the clinical therapeutic effects of fiber post-resin core with different numbers of posts in the repair of molar residual roots and crowns. METHODS： A total of 54 human molar residual roots and crowns with sound root canal filling in 48 patients were selected and restored with fiber post of different numbers and resin core as well as complete coronal restoration. There were 17 cases （20 samples） restored with single fiber post core, 16 cases （18 samples） restored with double fiber post cores, and 15 cases （16 samples） restored with three fiber post cores. They were followed up for 24 months and the repair results were compared. RESULTS AND CONCLUSION： After 24 months of follow-up, the success rates were 85%, 94% and 94% in the single fiber post, double fiber post and three fiber post groups, respectively, and no significant difference was detected among the three groups. Five failures were observed among 54 teeth： three cases of fiber post shedding in the single fiber post group, one case of fiber post shedding in the double fiber post group, and one case of fiber post shedding in the three fiber post group, and no root fracture occurred. Three kinds of fiber post-resin cores for repairing molar residual roots and crowns can get a better short-term clinical result. The repair effects were not different because of the different numbers of fiber posts.

关 键 词：桩核技术 磨牙 牙制备 口腔修复 生物材料 口腔生物材料 纤维桩 桩核 残根 残冠 

分 类 号：R318[医药卫生—生物医学工程]