Publication

Abstract : Aim: To compare the tensile bond strength (TBS) of an indigenously developed hydrogel denture adhesive with that of three commercially available denture adhesives under dry and wet conditions. Materials and methods: The test group consisted of an indigenously prepared hydrogel-based denture adhesive composed of chitosan-pectin (CSP) dopamine. The comparator group consisted of three commercially available denture adhesives (Fixon, Denofit, and Effergrip). The outcome measurement was TBS of the denture adhesives. A total of 56 samples were tested for the study and divided into four groups (hydrogel, Fixon, Denofit, and Effergrip) of 14 each. Each group was further divided into two groups (I and II) of seven samples each. Group I was tested under normal atmospheric conditions and group II was tested under artificial saliva. Statistical analysis was performed using Statistical Package for the Social Sciences (SPSS) version 20 for Windows. Student’s paired t-test, repeated measures design analysis of variance (ANOVA) among each group, and two-factor design ANOVA (adhesive by saliva treatment) were performed to determine the significance among mean values and different treatments. Results: For hydrogels, it was observed that there was a statistically significant difference with tensile strength being lower in artificial saliva. Fixon did not show a statistically significant change between the two conditions at any time point. At time points 6, 12, and 24 hours, the difference in tensile strength was statistically significant for all materials except Fixon under artificial saliva. Conclusion: The TBS was significantly greater in indigenously made hydrogel for 5 minutes, 3, and 6 hours both in normal atmospheric conditions and samples immersed in saliva. But after 24 hours, it showed the least strength. For all samples, TBS was found to be decreasing as the time interval increased. After 12 and 24 hours, Effergrip showed the highest TBS. The least strength was for Denofit. Clinical significance: A new hydrogel-based denture adhesive was tested against three commercially available denture adhesives, and it showed better initial bond strength under normal and wet conditions