Properties of an experimental mouthguard material

Purpose: The purpose of the present study was to evaluate some important me chanical properties of an experimental silicone material (PM1) to assess it s potential as a mouthguard material. Materials and Methods: The hardness, tear strength, tensile properties, and energy absorption properties of the silicone material were determined and compared with those of 2 commercially available materials (Bioplast, a polyvinylacetate polyethylene, and Polysh ield, a silicone). Results: Bioplast was significantly harder than Polyshie ld and PM1. Polyshield was significantly harder than PM1. Bioplast had a si gnificantly higher tear strength than both Polyshield and PM1. The tensile strength of Bioplast was significantly greater than that of Polyshield and PM1. PM1 had a significantly higher tensile strength than Polyshield. Biopl ast had a significantly lower energy absorption capacity at 500 N than both Polyshield and PM1,with PM1 having a significantly higher value than Polys hield. At 1,000 and 1,500 N, Bioplast had a significantly higher energy abs orption than both Polyshield and PM1. Conclusion: It was concluded that PM1 showed better energy absorption properties than Polyshield and better ener gy absorption properties than Bioplast at lower impact forces. PM1 was soft er and had better tear and tensile properties than Polyshield. The results of the present study suggest that the new material has a good potential for use as a mouthguard material.