Effect of betel leaf extract gel on color change in the dental enamel

Betel leaf extract gel contains tannin, a chromogenic agent that causes extrinsic discoloration of the tooth enamel. This study aimed to determine the effect of betel leaf extract gel on color changes in the tooth enamel. Eighteen extracted premolar teeth were divided into three groups (n = 6 each) based on the concentration of the betel leaf extract gel: 15%, 25%, and 35%. Color measurements were performed before application, and after 5, 15, and 26 applications (equivalent to 1, 3, and 6 months of application, respectively). The discolorations were calculated using the CIE L*a*b* formula. Statistical analysis revealed significant changes in color on the enamel surface among the 5, 15, and 26 gel applications at all three concentrations. Thus, duration of application of the betel leaf extract gel has a significant effect on color change of tooth enamel.