Effect of Different Types of Lower Acrylic Mini Implant Supported Overdenture Base Materials on the Supporting Structures

Abstract

This study was carried out to compare the effect of different types of lower acrylic mini implant supported over denture base materials on the supporting structures using radiographic assessment (CBCT). Fourteen patients were selected from among those attending the outpatient clinic, Prosthodontic Department, Faculty of Dentistry, Ain Shams University to participate in this study. Patients were precisely selected and thoroughly examined in order to reduce human variables and eliminate any factor that might adversely affect the results of this study. Patients were rehabilitated by mucosa supported maxillary complete denture and four mini implant retained mandibular overdenture. Standard clinical and laboratory techniques were followed for denture construction for all patients. Patients participating in this study were randomly divided into two equal groups according to attachment used into: Group 1 Seven patients were rehabilitated with mini implant retained mandibular overdenture of PMMA denture base (Vertex regular, Zeist, Netherlands) processed by conventional method using compression mold technique. Group 2 Seven patients were rehabilitated with mini implant retained mandibular overdenture of thermoplastic biocompatible denture base (Polyan IC, Modified methacrylate, Bredent, Germany) processed by injectable mold technique.