Assessment of peel bond strength between two facial prosthetic materials after surface treatment methods: In vitro study

Abstract

Aim: The bonding between acrylic resin to silicone liners in maxillofacial devices is vital for the maintenance of prosthetic parts. This study aims to provide insights into the effectiveness of different surface treatments in enhancing the bond between materials used in maxillofacial prosthetics, which is crucial to ensure both quality and durability in prosthetic applications. Materials and Methods: This in vitro study involves the fabrication of 30 specimens, with each specimen involving an acrylic part bonded to a silicone part. Each specimen measures 75 mm in length, 10 mm in width, and 6 mm in thickness. These dimensions are controlled and standardized for consistency. The study includes a total of 30 specimens, which represent the sample size, and it is divided into three groups (ethyl acetate, aluminum oxide sandblasting, and silicon carbide [SiC] paper), with each group having 10. Subsequently, the peel bonding strength was tested using a universal testing machine. All data were analyzed by one-way analysis of variance and Tukey’s post hoc tests at a level of α = 0.05. Results: Surface-treated specimens with ethyl acetate had the highest peel strength (PS) values (3.4138) followed by those treated with aluminum oxide sandblasting (2.3204) and SiC paper (1.8153), respectively. Conclusions: Surface treatment showed a varying impact on the PS of different materials. The ethyl acetate group benefited the most from the treatment, the sandblasting group experienced a moderate improvement, and the SiC group had the least improvement in peel bond strength.