口腔医学研究 ›› 2021, Vol. 37 ›› Issue (1): 63-66.DOI: 10.13701/j.cnki.kqyxyj.2021.01.014

• 口腔种植学研究 • 上一篇    下一篇

种植多单位修复中螺丝固位与粘接固位联合运用中机械并发症发生情况的回顾性研究

周立伟   

  1. 香港大学深圳医院牙科 广东 深圳 518000
  • 收稿日期:2020-06-28 出版日期:2021-01-28 发布日期:2021-01-22
  • 作者简介:周立伟(1974~ ),男,浙江人,硕士,研究方向:口腔种植与材料学,E-mail:Zhoulw@hku-szh.org。

A Retrospective Study on Occurrence of Mechanical Complications in Multi-unit Posterior Implants Combining Screw Fixation with Adhesive Fixation

ZHOU Liwei   

  1. Dental Department,The University of Hong Kong-Shenzhen Hospital, Shenzhen 518000, China
  • Received:2020-06-28 Online:2021-01-28 Published:2021-01-22

摘要: 目的: 比较多单位螺丝固位种植修复中,采用口内粘接与技师模型上粘接修复体内外冠的螺丝固位修复体在长期使用后机械并发症发生方面的差异。方法: 收集后牙区后多单位螺丝固位种植修复体戴牙后3年的患者205例(414颗种植体),其中技师模型上完成金属内冠和氧化锆外冠粘结而后口内螺丝固定99例(198颗植体);采用口内金属内冠螺丝固定被动就位后,再进行修复体内外冠口内粘结106例(216颗植体),比较两组病例观察期内的机械并发症的发生情况。结果: 模型上粘接的螺丝固位方式198枚植体中有48颗螺丝发生不同级别的机械并发症,同时发生内外冠粘接失败3例;口内粘接螺丝固位的216颗植体中有24颗螺丝松动,内外冠粘接失败15例。两种处理方式机械并发症结果有统计学差异(P<0.05)。口内粘接方式螺丝固位的粘接失败的发生情况有所增加,结果有统计学差异(P<0.05)。结论: 戴牙后3年种植多单位螺丝固位修复病例中,金属内冠被动就位后再进行内外冠口内粘接方式的螺丝松动概率低于口外模型上粘接的螺丝固位方式,但是内外冠粘接失败的可能性增加。

关键词: 种植修复, 螺丝固位, 粘接固位, 被动就位

Abstract: Objective: To compare the difference of mechanical complications between the internal and external adhesion in multi-unit screw-retained implant prosthodontics. Methods: There were 205 patients (414 implants) with multi-unit screw retention implant-supported prostheses in posterior area for 3 years. Among them, 99 patients (198 implants) had inner metal crown and outer zirconia crown bonded by technician and screw fixed in mouth, and 106 patients (216 implants) were fixed the inner metal crown with screw which had completely passive fit and then bonded the outer crown by doctor in mouth. The incidence of mechanical complications was compared between two groups after 3-year observation. Results: 48 of 198 screws in the cases bonded by technician had mechanical complications at different levels, and the adhesive failed in 3 cases. 24 of 216 screws in the cases bonded by doctor had screw loose, and the adhesive failed in 15 cases. There was significant difference in the outcome of mechanical complications and adhesive failure between two retention methods (P<0.05). Conclusion: In the 3-year observation period when bonded in-mouth by doctor, the screw loosening probability was reduced, however, the possibility of adhesive failure increased.

Key words: dental implants prosthesis, dental prosthesis retention, screw-retained implant, cement-retained implant, passive fit