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KMID : 1004520100260010059
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Journal of Dental Rehabilitation and Applied Science
2010 Volume.26 No. 1 p.59 ~ p.68
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Evaluation of 358 Mandibular Poster ior Implants: A 3-year Retrospective Study
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Yoon I-Kwon
Lee Gi
Lee Dong-Un
Choi Ju-Young
Yu Jeong-A
Park Pil-Gyu
Kim Jeong-Hee
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Abstract
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Recently, dental implants extensively inserted on edentulous area show highly clinical success rate. However, clinicians cannot exclude the possibility of failure and it often unexpectively occures. Many possible factors associated with failure of dental implants have been reported but controversy exists over the extent to them. In this study, we collected 212 patients who had been inserted 358 dental implants on mandibular premolar and molar area from 2005 to 2006. The survival rate of fixtures was recorded according to age of patients, implantation site, implant system, diameter and length of fixtures. Multi-variable analysis using SPSS chi-square test was operated to verify relation of each factors and survival rates. Accumulative survival rate was 98.3% for 3 years. Only diameter of fixtures was related to the implant survival rate. This may be thought that wider fixtures had been chosen to rescue implants or used in sites of poor bone quality. Further continuous study will be needed for direct guidance associated with survival rate of implants.
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KEYWORD
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dental implant, failure factor, implant diameter, mandibular posterior tooth, survival rate
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