The Erosion Properties of Chlorine Dioxide and Hydrogen Peroxide on Bovine Teeth

Objectives: The aim of this study was to assess the erosion potential of chlorine dioxide and hydrogen peroxide on bovine teeth. Methods: Sixty bovine crowns were ground and polished to give flat surfaces. The crowns were subjected to heavy staining cycles then equally divided into 3 treatment groups; chlorine dioxide (ClO2), hydrogen peroxide (H2O2), and deionised water (H2O). Specimens in each group were immersed in 150 ml of the treatment for seven 2 min cycle in addition to an extra 30 min cycle. Specimens were gently dried after each 2 min cycle to take quantitative light-induced fluorescence (QLF) images while non- contact light profilometry (NCLP) scans were performed at the end of the seven 2 min and the extra 30 min cycles. Results: ClO2 specimens showed a significant increase in %?F only after the first 2 min cycle (p < 0.05); however, a significant increase in %?F within H2 O2 specimens was found at the end of the seven recommended treatment cycles (p < 0.05). Conclusion: Chlorine dioxide does cause enamel erosion but to a lesser extent than that caused by hydrogen peroxide.