IADR Abstract Archives
Effect of a Dipotassium Oxalate Monohydrate-containing Mouthwash on Dental Surfaces
Objectives: To determine the impact of a 1.4% Dipotassium Oxalate Monohydrate(KOX) composition on color, luster and surface microhardness(SMH) of tooth surfaces and common dental substrates using an accelerated cycling model.
Methods: All substrates were exposed to 6 treatments per day for 14 days with a 1 hour saliva-mimic step in-between. Each treatment consisted of toothpaste slurry for 1 minute, followed by a 1 minute rinse. A 1.0% citric acid solution(PC) and water(NC) were used as the positive and negative controls. SMH, color and luster were recorded at baseline and 14 days. Statistical inference was based on two-sided 95% confidence intervals for the between-treatment mean difference in change from baseline.
Results: The primary endpoint was ΔSMH measured in Vickers Hardness Number(VHN) for human dentin and enamel. The secondary endpoints were ΔSMH for the remaining substrates; Δcolor and Δluster for all substrates. The SMH of human dentin and enamel surfaces exposed to KOX-containing compositions and NC were significantly less impacted compared to the PC. All other substrates showed less change or no significant difference in SMH. Color and luster were not statistically significantly different or showed less change for the KOX-containing composition versus the PC for all substrates.
Conclusions: The KOX-containing composition did not impact the SMH or color of any substrates used in this study.
Methods: All substrates were exposed to 6 treatments per day for 14 days with a 1 hour saliva-mimic step in-between. Each treatment consisted of toothpaste slurry for 1 minute, followed by a 1 minute rinse. A 1.0% citric acid solution(PC) and water(NC) were used as the positive and negative controls. SMH, color and luster were recorded at baseline and 14 days. Statistical inference was based on two-sided 95% confidence intervals for the between-treatment mean difference in change from baseline.
Results: The primary endpoint was ΔSMH measured in Vickers Hardness Number(VHN) for human dentin and enamel. The secondary endpoints were ΔSMH for the remaining substrates; Δcolor and Δluster for all substrates. The SMH of human dentin and enamel surfaces exposed to KOX-containing compositions and NC were significantly less impacted compared to the PC. All other substrates showed less change or no significant difference in SMH. Color and luster were not statistically significantly different or showed less change for the KOX-containing composition versus the PC for all substrates.
Conclusions: The KOX-containing composition did not impact the SMH or color of any substrates used in this study.