J Korean Acad Prosthodont.  2018 Apr;56(2):95-104. 10.4047/jkap.2018.56.2.95.

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

• Yoon JH
• Park YB
• Oh NS

• KMID: 2410112
• DOI: http://doi.org/10.4047/jkap.2018.56.2.95

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 ± 0.30 years and the median was 10 years. The mean duration of failed RDP was 8.18 ± 0.29 years and the median was 7 years. The mean duration of failed implant prosthesis was 7.99 ± 0.30 years 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.

Keyword

Life expectancy; Kaplan Meier analysis; Follow-up studies; Prostheses and implants

MeSH Terms

Dental Prosthesis
Dental Pulp Cavity
Dentition
Follow-Up Studies
Hospitals, General
Hospitals, University
Humans
Kaplan-Meier Estimate
Korea*
Life Expectancy
Longevity*
Methods
Prostheses and Implants*
Prosthodontics

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