Factors associated with the survival and marginal bone loss of dental implants: A 5-year retrospective study
임플란트의 생존과 변연골 소실에 영향을 미치는 인자들
- 주제(키워드) Dental implant , Alveolar bone loss , Cumulative survival rate , Risk factor , Residents.
- 발행기관 강릉원주대학교 일반대학원
- 발행년도 2015
- 학위수여년월 2015. 2
- 학위명 석사
- 학과 및 전공 일반대학원 치의학과
- 세부전공 치주과학
- 원문페이지 30
- 실제URI http://www.dcollection.net/handler/kangnung/000000006888
- 본문언어 영어
초록/요약
Purpose: The present study was designed to determine the effects of multiple risk factors, including the clinician’s expertise, on long-term survival rate and marginal bone loss of dental implants. Methods: Using retrospective analysis, we reviewed the clinical charts and dental radiographs of implant patients whose implants had been placed by residents of the Department of Periodontics at Gangneung-Wonju National University Dental Hospital from January 2002 to March 2009. Four-hundred-twenty implants in 146 patients with at least 5-years follow-up data were included. Data on peri-implant marginal bone loss, patient demographics, implant and surgical characteristics, smoking status, implant-abutment connection type, year of the resident at the time of implant placement, and early exposure of cover screws were obtained from peri-apical radiographs and chart review. Implant survival was defined as implants remaining with radiographic marginal bone level in more than 50% of the fixture length irrespective of the reason. Results: The cumulative survival rate after 5 years of loading was 94.9%, and that after 10 years of loading was 93.2%. In binary logistic regression analysis, smoking status (P=0.033; Odds ratio (OR), 3.263) and spontaneous cover screw exposure (P<0.001; OR, 6.523) were related significantly to the 5-year survival of implants. In stepwise multiple regression analysis, smoking status (P<0.001), type of abutment connection (P<0.001), and implant surface (P=0.033) were related significantly to peri-implant marginal bone level. The year of residence of the clinician performing the implantation was not related statistically to the 5-year implant survival by simple logistic regression analysis (P=0.171). Conclusions: Our results demonstrate that smoking status, spontaneous cover screw exposure, type of abutment connection, and implant surface are important factors for implant success. However, the experience of the clinician performing the implant placement was not a significant factor in implant failure.
more목차
Ⅰ. Introduction
Ⅱ. Materials and methods
Ⅲ. Results
Ⅳ. Discussion
Ⅴ. Conclusions
Ⅵ. References
Abstract in Korean
Abstract in English
