Year : 2024

Volume : Volume 15

Issue : Issue 4

Address for correspondence :
Himanshu Srivastava
himanshu.srivastava97@gmail.com

Abstract

Background: Acrylic teeth have been in use in dentistry for decades in the fabrication of completed dentures with increased use of implants supported overdentures; the use of acrylic teeth and resin denture bases have further increased de-bonding of acrylic teeth from denture base is the common mode of failure. The following study is undertaken to evaluate the durability of adhesion between acrylic teeth and denture bade after surface conditioning methods, which includes a combination of mechanical and chemical treatment. Materials and Methods: A sample size of 80 molar acrylic teeth was selected; all the samples were divided into four groups depending on surface conditioning methods before acrylization, that is, each group of 20 samples. Group 1 was the control group; Group 2 was the silage coupling agent used for surface treatment. Group 3 cyanoacrylate was used as surface treatment. Group 4 methyl methacrylate (MMA)-based bonding agent. After acrylization and specified dimensions, the samples were loaded perpendicular at interface of acrylic teeth and denture base, using universal testing machine till catastrophic failure occurred. Results: Comparison of fracture resistance of four different groups showed mean value of Group 1 – 368.23 N, Group 2 – 486.09 N, Group 3 – 265.68 N, and Group 4 – 525.05 N. There was statistically significant difference of bond strength between groups as determined by one-way ANOVA (F [3.76] = 50.98, P < 0.00001). Conclusion: MMA-based bonding agent had the highest bond strength. Silane coupling agent increased the bond strength significantly compared to control group. Cyanoacrylate surface treatment had least bond strength acting as interference instead of bonding agent