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http://dx.doi.org/10.5051/jpis.2014.44.3.102

Long-term implant success at the Academy for Oral Implantology: 8-year follow-up and risk factor analysis  

Busenlechner, Dieter (Academy for Oral Implantology)
Furhauser, Rudolf (Academy for Oral Implantology)
Haas, Robert (Academy for Oral Implantology)
Watzek, Georg (Academy for Oral Implantology)
Mailath, Georg (Academy for Oral Implantology)
Pommer, Bernhard (Academy for Oral Implantology)
Publication Information
Journal of Periodontal and Implant Science / v.44, no.3, 2014 , pp. 102-108 More about this Journal
Abstract
Purpose: Rehabilitation of the incomplete dentition by means of osseointegrated dental implants represents a highly predictable and widespread therapy; however, little is known about potential risk factors that may impair long-term implant success. Methods: From 2004 to 2012, a total of 13,147 implants were placed in 4,316 patients at the Academy for Oral Implantology in Vienna. The survival rates after 8 years of follow-up were computed using the Kaplan-Meier method, and the impact of patient- and implant-related risk factors was assessed. Results: Overall implant survival was 97% and was not associated with implant length (P=0.930), implant diameter (P=0.704), jaw location (P=0.545), implant position (P=0.450), local bone quality (P=0.398), previous bone augmentation surgery (P=0.617), or patient-related factors including osteoporosis (P=0.661), age (P=0.575), or diabetes mellitus (P=0.928). However, smoking increased the risk of implant failure by 3 folds (P<0.001) and a positive history of periodontal disease doubled the failure risk (P=0.001). Conclusions: Summing up the long-term results of well over 10,000 implants at the Academy for Oral Implantology in Vienna it can be concluded that there is only a limited number of patients that do not qualify for implant therapy and may thus not benefit from improved quality of life associated with fixed implant-retained prostheses.
Keywords
Dental implants; Endosseous dental implantation; Implant-supported dental prosthesis; Periodontal diseases; Risk factors; Survival analysis;
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