| 1554 Cost-effectiveness of Mandibular Conventional and Two-implant Overdentures | ||
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J. FEINE1, G. HEYDECKE2, Y. TAKANASHI1, J.M. THOMASON3, J.P. LUND1, and J.R. PENROD1, 1 McGill University, Montreal, Canada, 2 Albert-Ludwigs-University, D-79106 Freiburg, Germany, 3 University of Newcastle, Newcastle upon Tyne, England Economic considerations often dictate choice of therapeutic options in restorative dentistry. Therefore, it is important to measure cost of providing treatments along with efficacy in clinical trials so that the two can be compared directly. Results of such cost-effectiveness studies provide patients and third-party payers, including governments, with the necessary information they need to make appropriate health-care choices. Objective: To determine the cost-effectiveness of mandibular 2-implant overdentures and conventional dentures opposed by conventional maxillary dentures. Methods: In a randomized clinical trial, we measured direct treatment costs (e.g. materials and labor) and oral health-related quality of life using the OHIP-20 in edentulous seniors (65-75 years; n=30) who received a maxillary denture and either a mandibular conventional denture (CD) or a two-implant overdenture with ball attachments (IOD) up to one year post-treatment. Data for subsequent years were estimated from values obtained from published data and a panel of experts. Results: Using an average life expectancy of 17.9 years, the equalized annual costs were CAD$ 398.60 for CD and $ 528.40 for IOD (p<0.001). The equalized annual values for the OHIP-20 outcome were 47.01 units for CD and 31.29 for IOD treatment (p<0.05), indicating that oral health-related quality of life was significantly better (by 33%) in the IOD group. The additional annual cost needed to achieve this level of oral health-related quality of life benefit over conventional treatment is approximately $131 CAD. Conclusion: The initial cost of mandibular two-implant overdentures is significantly more than conventional dentures, but the former provide a much better oral health-related quality of life. By comparing costs and benefits over the expected lifetime of the subjects, it can be seen that quality of life can be greatly improved by IOD treatment for a relatively modest annual investment. Supported by the Canadian Institutes for Health Research and Straumann Canada Limited.
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| Seq #164 - Oral Health Care, Epidemiology, Quality of Life, Oral Function and Morphology in Old Age 11:00 AM-12:15 PM, Friday, 27 June 2003 Svenska Massan Exhibition Hall B | ||
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