Fracture Strength of Repaired Midline Fractures of Maxillary Denture

Abstract

Statement of problem: Denture fracture is a frequent clinical problem faced by the dentist. Denture repair should be simple to perform, cost-effective and quick. Unfortunately, the current methods of repair do not meet all of these requirements. Cyanoacrylate is a conveniently available adhesive material and it has been used by some patients to temporarily repair dentures before they get new ones. It is easy to use and relatively inexpensive. However, there is no literature that lists cyanoacrylate as a type of denture repair material. Purpose: This study investigated the transverse fracture strength of denture bases repaired with cyanoacrylates (Loctite Superglue Liquid, Loctite Superglue Liquid Professional). This was compared with denture bases repaired with auto-polymerizing acrylic resin (Lucitone 199 Repair Material). Material and methods: Thirty maxillary denture specimens were prepared and tested. They were divided into 3 different groups. Each of them was prepared with a clean midline fracture, repaired with Loctite Superglue Liquid, Loctite Superglue Liquid Professional or Lucitone 199 Repair Material and tested using the Universal Testing Machine. Data were analyzed using 1-way ANOVA and Tukey's HSD test, α=0.05. Results: There was a significant difference among the 3 types of repair materials. There was no significant difference in transverse fracture strength between Loctite Superglue Liquid Professional (107.16 ±20.57 MPa) and Lucitone 199 Repair Material (128.90 ±22.08 MPa). Loctite Superglue Liquid (53.79 ±19.05 MPa) had significant less transverse fracture strength than the other 2 types of material. Conclusion: Within the limitations of this study, cyanoacrylate containing methyl methacrylate polymer (Loctite Superglue Liquid Professional) is an inexpensive and readily available material which can be used as a temporary measure to repair dentures with a clean fracture. However, further studies are required to investigate the long term cytotoxicity and intraoral stability of the material.