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http://dx.doi.org/10.4047/jkap.2018.56.2.95

Analysis of longevity and success rate of fixed, removable, and implant prostheses treated in Korea  

Yoon, Joon-Ho (Department of Prosthodontics, School of Dentistry, NHIS Ilsan Hospital)
Park, Young-Bum (Department of Prosthodontics, School of Dentistry, Yonsei University)
Oh, Nam-Sik (Department of Prosthodontics, School of Medicine, Inha University)
Publication Information
The Journal of Korean Academy of Prosthodontics / v.56, no.2, 2018 , pp. 95-104 More about this Journal
Abstract
Purpose: The purpose of this study is to analyze the factors affecting the longevity of failed prosthesis and the success rate of the prosthesis based on the data evaluated with the newly developed Korean Academy of Prosthodontics (KAP) criteria. Materials and methods: Evaluation was performed in the restored prosthesis for patients who visited the prosthodontics department of the 13 dental university hospitals and general hospitals. The status of the prosthesis was classified into four categories: Good, Fair, Bad, Worst. The success was recorded if only the category was classified in 'good'. The mean duration of failed prostheses and the success rate through Kaplan-Meier method were analyzed. Results: A total of 1,804 cases of prosthesis were evaluated: 810 cases of fixed dental prostheses (FDP), 519 cases of Removable Dental Prostheses (RDP), and 475 cases of implant prosthesis. The mean duration of failed FDP was $11.41{\pm}0.30years$ and the median was 10 years. The mean duration of failed RDP was $8.18{\pm}0.29years$ and the median was 7 years. The mean duration of failed implant prosthesis was $7.99{\pm}0.30years$ and the median was 7 years. The factors related to the failure were as follows: number of units, abutments, abutments treated with root canal, and plaque index in FDPs; treated and opposing dentition in RDPs; the number of implants, duration of use, and plaque index in implant prostheses. Conclusion: The average duration of failed prosthesis was 11.41 years for FDPs, 8.18 years for RDPs, and 7.99 years for implant prosthesis, according to the evaluation with newly developed KAP criteria.
Keywords
Life expectancy; Kaplan Meier analysis; Follow-up studies; Prostheses and implants;
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Times Cited By KSCI : 1  (Citation Analysis)
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