Conventionally vs. Digitally Fabricated Complete Dentures: Clinical Treatment Outcome Differences

Rationale for Study Design An AB/BA (conventional=A, digital=B) crossover design with no wash-out period is flawed for this study, and its weakness is the potential for a carryover effect (benefits or risks associated with treatment A carry over to treatment B). A wash-out period is not feasible for this study because it would require the patient-subjects to suspend use of their dentures for the duration of the wash-out period. The Investigators have decided to conduct the study using the ABB/BAA crossover design, which does not require a wash-out period and will permit testing and discounting of a possible carryover effect. In addition, this design is more appropriate for a small sample size than the AB/BA design. The investigators are adding to the scant literature on digital dentures, information that has never before been studied - the retention, aesthetics, and stability of digital dentures compared to conventional dentures. Additionally, the investigators will have longitudinal data on these characteristics regarding digital dentures. If the Functional Assessment of Dentures (FAD) and the patient evaluation show positive results for the digital dentures, this could lead to increased use of the Computer -Aided Design/ Computer -Aided Manufacturing (CADCAM) fabrication method which, in turn, would allow greater numbers of people to benefit from the advantages of the digital dentures as described earlier in this application (e.g., a better fit, fewer visits with less time in the chair, less biofilm formation, etc.)