Marginal bone level changes in association with different vertical implant positions: a 3-year retrospective study.
10.5051/jpis.2017.47.4.231
- Author:
Yeon Tae KIM
1
;
Gyu Hyung LIM
;
Jae Hong LEE
;
Seong Nyum JEONG
Author Information
1. Department of Periodontology, Wonkwang University Daejeon Dental Hospital, Wonkwang University College of Dentistry, Daejeon, Korea. seongnyum@wonkwang.ac.kr
- Publication Type:Original Article
- Keywords:
Alveolar bone loss;
Bone-implant interface;
Dental implants
- MeSH:
Alveolar Bone Loss;
Bone-Implant Interface;
Dental Implants;
Humans;
Retrospective Studies*
- From:Journal of Periodontal & Implant Science
2017;47(4):231-239
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: To retrospectively evaluate the relationship between the vertical position of the implant-abutment interface and marginal bone loss over 3 years using radiological analysis. METHODS: In total, 286 implant surfaces of 143 implants from 61 patients were analyzed. Panoramic radiographic images were taken immediately after implant installation and at 6, 12, and 36 months after loading. The implants were classified into 3 groups based on the vertical position of the implant-abutment interface: group A (above bone level), group B (at bone level), and group C (below bone level). The radiographs were analyzed by a single examiner. RESULTS: Changes in marginal bone levels of 0.99±1.45, 1.13±0.91, and 1.76±0.78 mm were observed at 36 months after loading in groups A, B, and C, respectively, and bone loss was significantly greater in group C than in groups A and B. CONCLUSIONS: The vertical position of the implant-abutment interface may affect marginal bone level change. Marginal bone loss was significantly greater in cases where the implant-abutment interface was positioned below the marginal bone. Further long-term study is required to validate our results.
