Sadashiv G. Daokar, Chaitali R. Mahakale, Kalpana S. Pawar, Kapil D. Wahane, Kalyani S. Kagne, Trupti V. Thorat

ABSTRACT

Aim: To compare the effect of herbal and non herbal whitening toothpastes on the microhardness of enamel and nanohybrid composite resin . Materials and Methods: Forty five human enamel specimens(Group A ) and forty five nanohybrid composite specimens (Group B) were divided into following three groups each (total six groups) , according to the whitening toothpaste used for brushing :Group A1 and Group B1: without whitening toothpaste; Group A2 and Group B2: with Herbal whitening toothpaste; Group A3 and Group B3: with Non herbal whitening toothpaste. A brushing regimen was performed using powered toothbrush for 45 days and microhardness values for all groups was determined on 15th, 30th and 45th day using Vickers microhardness tester. Statistical Analysis: The data obtained was statistically analyzed using ANOVA test Results: Amongst Group A and Group B respectively, Group A1 and Group B1 showed highest microhardness values followed by Group A2 and Group B2 followed by Group A3 and B3 on all 15th , 30th and 45th day. Highest microhardness values were seen for both enamel and composite specimens on 15th day followed by 30th day with least values on 45th day. Conclusion: Non herbal whitening toothpaste ( Colgate visible white) caused a significantly greater reduction in the microhardness of enamel and nanohybrid composite than Herbal whitening toothpaste ( Himalaya sparkling white) and the reduction was time dependent