Purpose: Evaluating the effect of ozonized water versus alkaline peroxide (Corega) denture cleaner on color stability, hardness, and surface roughness of materials of two denture base.
Materials and methods:180 samples were made from two commercially available denture base materials, conventional heat cure resin, and polyamide resin. Denture cleansers were divided into three equal groups; ozonized water using Sota Woz-5 home ozone generator, Corega tablets and distilled water. The effect of three cleansing agents on the two different denture was evaluated and compared to color stability using a spectrophotometer, surface roughness using 3D Optical profilometer, and hardness using Vickers Hardness Tester.
Results: Regarding to color change (ΔE); it was found that alkaline peroxide recorded statistically significant change higher than ozonized water on both denture materials, while distilled water showed no significant difference. According to the surface roughness, denture cleaners recorded statistically non-significant changes on both denture materials. While in hardness, Ozonised water, and alkaline peroxide recorded statistically significant on both denture materials, but alkaline peroxide recorded statistically significant higher change mean value on Polyamide than PMMA, while distilled water showed non-significant difference on both denture materials.
Conclusion: Ozonised water regenerated by ozone generators is useful cost-effective means of denture cleaning. Ozonised water showed less color changes to both PMMA and polyamide materials than alkaline peroxide cleanser. Both ozonized water and alkaline peroxide had no negative effect on surface roughness and a slight deteriorating effect in hardness with a clinically accepted degree of change.