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Volume 34 , Issue 3
May/June 2021

Pages 317–323


An 8- to 10-Year Follow-up of Denture Satisfaction and Oral Health–Related Quality of Life with Implant-Retained Mandibular Overdentures

Ghajanaa Mukilvannan, Research student/Cecilie Gudveig Gjerde, DDS, PhD/Christian Schriwer, DDS, PhD/Stein Atle Lie, MSc/Einar Berg, BDS, Dr Odont/Harald Gjengedal, DDS, PhD


DOI: 10.11607/ijp.7521

Purpose: To report changes in denture satisfaction and oral health–related quality of life (OHRQoL) in edentulous patients treated with two-implant mandibular overdentures (IODs) over a follow-up of 8 to 10 years. Materials and Methods: This is a follow-up of a previous study carried out between 1997 and 2005. The patients were originally randomly divided into one group receiving IODs and another group who had their conventional mandibular dentures relined (RCD group). The RCD group was offered and received IODs at the 2-year follow-up. The participants completed a self-administered questionnaire containing demographics, 15 variables related to denture satisfaction, and 20 questions from the Oral Health Impact Profile (OHIP-20). Changes over time were analyzed using multilevel linear models for denture satisfaction and multilevel ordinal regression analyses for OHIP-20 variables. Comparisons between groups were analyzed using Mann-Whitney U test for ordinal data and t test for metric data. Results: Disregarding patients who passed away during follow-up, the 29 responders represented a response rate of 76%. The degree of denture satisfaction and the OHIP-20 scores remained high and stable in the IOD group over the 10-year observation period for all but one variable. The same factors showed only a modest improvement in the RCD group for the first 2 years; however, during the subsequent 8 years of the observation period (after receiving IODs), denture satisfaction and OHIP-20 scores improved to the same level as the original IOD group. Conclusion: The positive effect on denture satisfaction and OHRQoL of edentulous patients treated with two-implant mandibular overdentures remained unchanged 8 to 10 years after treatment.


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