Evaluation of flexural strength of denture base repaired by various materials and techniques

Abstract

Traditionally complete and partial dentures are desired form of replacement for missing teeth. A variety of polymers are used for different clinical procedures in dentistry, among these polymethyl methacrylate (PMMA) is most commonly used in dental settings. But in clinical practice, cracking and fracturing of the PMMA is the frequent cause of failure of complete or partial removable dentures. Thus a good material for repair must be chosen to overcome this problem. To evaluate the flexural strength of acrylic resin repair processed by different methods. An in-vitro study was conducted with Thirty-six maxillary denture bases prepared in the Laboratory at the Department of Prosthodontics and Crown & Bridge, at AB Shetty Memorial Institute of Dental Sciences, Deralakatte, Mangalore. Ethical clearance was obtained from the institutional ethical committee, to conduct this study. This study was conducted on maxillary denture bases reinforced with various materials to assess the change in midline flexural strength of the denture base. For the study 36 maxillary denture bases were fabricated and divided into three groups depending on the material were made. Group 1 Auto polymerizing resin (DPI-RR), Group 2 High impact resin (Trevalon-Dentsply), Group 3 Glass fiber reinforced resin (Acralyn-H).