A1 Refereed original research article in a scientific journal

Complete denture replacement: a 20-year retrospective study of adults receiving publicly funded dental care




AuthorsTaylor Marietta, Masood Mohd, Mnatzaganian George

PublisherJAPAN PROSTHODONTIC SOC

Publication year2022

JournalJournal of Prosthodontic Research

Journal name in sourceJOURNAL OF PROSTHODONTIC RESEARCH

Journal acronymJ PROSTHODONT RES

Volume66

Issue3

First page 452

Last page458

Number of pages7

ISSN1883-1958

eISSN2212-4632

DOIhttps://doi.org/10.2186/jpr.JPR_D_20_00323

Web address https://www.jstage.jst.go.jp/article/jpr/66/3/66_JPR_D_20_00323/_article

Self-archived copy’s web addresshttps://research.utu.fi/converis/portal/detail/Publication/176551171


Abstract

Purpose: There is little evidence as to what is the appropriate replacement interval for complete dentures. The aim of this study was to determine the longevity of complete dentures in a population of publicly insured adults across a 20 year observation period.

Methods: The records of 187,227 Australian adults who accessed complete denture treatment through public clinics between 2000-2019 were assessed. Time to denture replacement was modelled using a Weibull regression and a competing risk regression to adjust for the competing risk of mortality.

Results: Over a 20-year period, 27.7% of dentures were replaced, with a mean longevity of 6.06 (SD: 3.93) years. Pairs of complete dentures had greater mean longevity than single dentures (p<0.001). Approximately 4.6% of dentures provided were replaced within 2 years; 18.4% were replaced between 2 and 10 years and 4.6% of replacements occurred after 10 years. Over 70% of adults who received a complete denture did not replace it during the observation period. Dentures provided by denturists had higher levels of replacement than those made by dentists. Participants over 80 years of age had lower rates of denture replacement. Low socio- economic status and living outside a major city were associated with reduced rates of replacement for dentures under 10 years of age.

Conclusion: Complete dentures were commonly replaced after 6 years of service. Pairs of dentures lasted longer than single dentures.


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