@Article{, title={Hypochlorous Acid: Effects on Two Surface Properties of Denture Materials}, author={Fatima Kadhim Ghadeer and Maha Kareem Jabbar and Najwah Yousuf Hameed}, journal={Journal of Oral and Dental Research مجلة طب الفم والاسنان}, volume={9}, number={1}, pages={44-52}, year={2022}, abstract={Background The chemical disinfectant is the most widely used method by the patients to maintain clean and healthy dentures, but the use of such disinfectant may affect the denture base materials. Objectives To assess the effect of hypochlorous acid spray disinfectant on the surface roughness and hardness of heat-cured and flexible acrylic resin denture base materials. Materials and Methods A study sample of forty specimens was fabricated following the ADA specification No.12, 1999. They were divided into two main groups depending on the type of the denture base materials used in this study (heat-cured PMMA and flexible resin) (20 specimens each). Then these two main groups were subdivided into two subgroups according to the type of measurement (roughness and hardness). All specimens were tested before and after disinfection. Each subgroup was evaluated before and after the application of hypochlorous acid spray as a disinfectant agent. Study data were analysed using the student T-test at a confidence level of 95% and a significant p-value of p≤0.05. Results The T-test indicated a highly significant difference in the hardness of heat-cured and flexible denture base materials after disinfection by hypochlorous acid (p≤0.05). However, there was no significant difference in the roughness of heat-cured and flexible denture base material after disinfection by hypochlorous acid (p>0.05). Conclusion The hardness of heat-cured and flexible resin denture base material decreased by hypochlorous acid disinfectant, while the roughness was not affected by hypochlorous acid disinfectant.

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