The Journal of Advanced Prosthodontics

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Prediction of lifespan and assessing risk factors of large-sample implant prostheses: a multicenter study

  • Jeong Hoon Kim (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Joon-Ho Yoon (Department of Prosthodontics, NHIS Ilsan Hospital) ;
  • Hae-In Jeon (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Dong-Wook Kim (Department of Information and Statistics, Research Institute of Natural Science, Gyeongsang National University) ;
  • Young-Bum Park (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Namsik Oh (Department of Dentistry, School of Medicine, Inha University)
  • Received : 2024.01.04
  • Accepted : 2024.06.14
  • Published : 2024.06.30
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Abstract

PURPOSE. This study aimed to analyze factors influencing the success and failure of implant prostheses and to estimate the lifespan of prostheses using standardized evaluation criteria. An online survey platform was utilized to efficiently gather large samples from multiple institutions. MATERIALS AND METHODS. During the one-year period, patients visiting 16 institutions were assessed using standardized evaluation criteria (KAP criteria). Data from these institutions were collected through an online platform, and various statistical analyses were conducted. Risk factors were assessed using both the Cox proportional hazard model and Cox regression analysis. Survival analysis was conducted using Kaplan-Meier analysis and nomogram, and lifespan prediction was performed using principal component analysis. RESULTS. The number of patients involved in this study was 485, with a total of 841 prostheses evaluated. The median survival was estimated to be 16 years with a 95% confidence interval. Factors found to be significantly associated with implant prosthesis failure, characterized by higher hazard ratios, included the 'type of clinic', 'type of antagonist', and 'plaque index'. The lifespan of implant prostheses that did not fail was estimated to exceed the projected lifespan by approximately 1.34 years. CONCLUSION. To ensure the success of implant prostheses, maintaining good oral hygiene is crucial. The estimated lifespan of implant prostheses is often underestimated by approximately 1.34 years. Furthermore, standardized form, online platform, and visualization tool, such as nomogram, can be effectively utilized in future follow-up studies.

Keywords

Acknowledgement

This research was supported by a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI) and funded by the Ministry of Health and Welfare, Republic of Korea (grant number: HC16C2335).

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