Complication incidence of two implant systems up to six years: a comparison between internal and external connection implants
채성욱, 김영성, 이용무, 김원경, 이영규, 김수환,
소속 상세정보
채성욱 ( Chae Sung-Wook ) - Asan Medical Center Department of Periodontics
김영성 ( Kim Young-Sung ) - Asan Medical Center Department of Periodontics
이용무 ( Lee Yong-Moo ) - Seoul National University School of Dentistry Department of Periodontology
김원경 ( Kim Won-Kyung ) - Asan Medical Center Department of Periodontics
이영규 ( Lee Young-Kyoo ) - Asan Medical Center Department of Periodontics
김수환 ( Kim Su-Hwan ) - Asan Medical Center Department of Periodontics
KMID : 0363020150450010023
Abstract
Purpose: This study was conducted to compare the cumulative survival rates (CSRs) and the incidence of postloading complications (PLCs) between a bone-level internal connection system (ICS-BL) and an external connection system (ECS).
Methods: The medical records of patients treated with either a ICS-BL or ECS between 2007 and 2010 at Asan Medical Center were reviewed. PLCs were divided into two categories: biological and technical. Biological complications included >4 mm of probing pocket depth, thread exposure in radiographs, and soft tissue complications, whereas technical complications included chipping of the veneering material, fracture of the implant, fracture of the crown, loosening or fracture of the abutment or screw, loss of retention, and loss of access hole filling material. CSRs were determined by a life-table analysis and compared using the log-rank chi-square test. The incidence of PLC was compared with the Pearson chi-squared test.
Results: A total of 2,651 implants in 1,074 patients (1,167 ICS-BLs in 551 patients and 1,484 ECSs in 523 patients) were analyzed. The average observation periods were 3.4 years for the ICS-BLs and 3.1 years for the ECSs. The six-year CSR of all implants was 96.1% (94.9% for the ICS-BLs and 97.1% for the ECSs, P=0.619). Soft tissue complications were more frequent with the ECSs (P=0.005) and loosening or fracture of the abutment or screw occurred more frequently with the ICS-BLs (P<0.001).
Conclusions: Within the limitations of this study, the ICS-BL was more prone to technical complications while the ECS was more vulnerable to biological complications.
키워드
Dental implant-abutment design ; Dental implants ; Retrospective studies ; Survival rate
원문 및 링크아웃 정보
등재저널 정보