Background: Immediate dentures are dental prostheses constructed for insertion immediately following the extraction of the natural teeth and the attendant surgical procedures. Reviewing through the literatures has indicated that immediate denture service has several advantages as the natural facial expression and appearance is maintained because the facial muscles are maintained in their correct position and the patient never appears edentulous. Aim of the study: To study efficacy of immediate complete denture, tooth and implant supported overdenture on the maintenance of vertical dimension. Materials and methods: The study was conducted in the Department of Prosthodontics of the Dental institution. For the study, 30 patients were selected between age range of 40-75 years. An informed written consent was obtained from each patient after informing them about the procedure and aim of the study. The selected patients were randomly grouped into three groups with 10 patients in each group. Group 1: Three patients receiving conventional acrylic immediate complete mandibular denture (mucosal-supported); Group 2: Three patients who will be receiving acrylic immediate complete mandibular denture supported by reduced root canal treated canines (tooth-supported). Group 3: Three patients who will be receiving acrylic immediate complete mandibular denture supported by osseointegrated fixtures in the canines region (implant-supported). Results: The comparison of mean differences in occlusal vertical dimension was done. The mean occlusal vertical dimension changes in Group 1 were -0.49 at time 1, -0.71 at time 2, and -2.93 at time 3; in Group 2 were -0.55 at time 1, -0.66 at time 2, -1.52 at time 3; in Group 3 were -0.39 at time 1, -0.66 at time 2, and -2.11 at time 3. Comparison between mean differences in occlusal vertical dimension for tested times were statistically non-significant. Conclusion: Within the limitations of the present study, it can be concluded that immediate implant overdenture prosthesis can be successful with increased clinical efficiency under specific clinical situations. The biting force of masticatory muscle is functionally dependent on maintenance of muscle health and occlusal vertical dimension.
Keywords: Complete denture, implant overdenture, immediate complete denture