Cost-efficiency of Two Methods of Fabrication of Conventional Dentures

We carried out a randomized controlled clinical trial to compare traditional (T) and simplified (S) methods of fabricating conventional dentures for 118 edentate subjects (Kawai et al, 2005). The T method includes additional steps: final impressions, face-bow registration, mounting on an adjustable articulator, and occlusal adjustment on the articulator, that are not used in the S method. We showed that the method of fabrication had no significant effect on patent satisfaction or on denture quality assessed by prosthodontists. In this paper, we report on cost-efficiency for clinicians by computing earning per hour using the T and S methods. The relationship between patient ratings of satisfaction and fabrication method was also investigated.

Objectives: To compare the cost-efficiency of providing maxillary and mandibular conventional dentures using T and S methods.

Methods: We measured the direct material costs and laboratory costs in Canadian $, time spent by the prosthodontists on treatment for up to 6 months post-delivery, and patient's ratings of general satisfaction (0-100). Gross income was calculated by deducting total costs from the suggested fee (Quebec Association of Dentists fee guide) for one set of complete dentures.

Results: Mean gross income per hour was significantly higher (p<0.001) with S ($278) than with the T technique ($170). There was also a low, but significant positive association between income per hour and patient general satisfaction (S: r=0.34, p<0.01, T: r=0.48, p<0.01).

Conclusion: The S method is more cost-efficient than the T method for fabrication of conventional dentures.