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. 2025 Jul 22;38(4):404-408.
doi: 10.11607/ijp.9148.

30-Year Clinical Performance of Double-Crown-Retained Removable Partial Dentures-A Practice-Based Retrospective Study

Lea S Prott, Zara A von Zitzewitz, Ralph Brinks, Robert Teeuwen, Alfons Hugger, Petra C Gierthmuehlen

30-Year Clinical Performance of Double-Crown-Retained Removable Partial Dentures-A Practice-Based Retrospective Study

Lea S Prott et al. Int J Prosthodont. .

Abstract

This retrospective study evaluated the clinical long-term survival of 1,405 double-crown retained removable partial dentures (DRPDs) over 30 years of follow-up. Kaplan-Meier survival rates for DRPDs were 96.6% after 5 years, 88.2% after 10 years, 61.7% after 20 years, and 38.3% after 30 years. Survival rates of abutment teeth were 94.3% after 5 years, 80.2% after 10 years, 51% after 20 years, and 27% after 30 years. Key failure risk factors of DRPDs were age, ≤ 3 abutment teeth, and complete denture in opposing jaw. Abutment teeth failure risk factors included age, anterior abutment teeth, punctual support, and nonvital teeth.

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