Comparative Evaluation of Flexural Strength of Self Cure and Light Cure Acrylic Resin Used to Secure Implant Attachment Housing to Implant Overdentures.-an In-vitro Study

The purpose of this study is to compare the flexural strength values of four different methods for chair side direct transfer methods of implant housing. Materials and Methods: Sixty heat-cured polymethylmethacrylate denture blocks were prepared of size 11 (±0.5) x 8 (±0.5) x 38(±0.5) mm. At the centre a hole of 5mmx8mm dimension was made to secure the implant housing.The Implant Housings were embedded in Acrylic Blocks using the four repair techniques Group A:Autopolymerized acrylic resin(APAR)Group B:Light Polymerized acrylic resin(LPAR) Group C:Autopolymerized acrylic resin with sandblasted and silanated attachment housing (APSAR) Group D:Light Polymerized acrylic resin with sandblasted and silanated attachment housing (LPSAR) The flexural strength of the repaired denture blocks with the attachment housings was measured with three-point bending test using.Statistically analyzed, mean and standard deviation was calculated using ANOVA and Tuckey's test. Results: revealed that self-cured acrylic with silanated attachment housing yielded the highest mean flexural strength values (p<0.0001) Conclusion: Flexural strength of self-cured acrylic with sandblasted and silanated attachment housing was significantly higher than self-cured, light-cured, and light-cured acrylic with sandblasted and silanated attachment housing groups.