Tooth Discoloration after Bracket De-bonding: An in Vitro Study
Dental News Volume XVIII, Number III, September, 2011 by Dr. Yousef Tashkandi, Pr. Jan Huggare, Pr. Fadi El-Homsi Abstract The purpose of this study : to assess the changes in color and brightness of dental enamel after bracket de-bonding following 10 days exposure to discoloring solutions of tea and coffee. Materials and Methods: Twenty premolars were divided into two groups of 10 teeth each. Buccal surfaces of these teeth were divided vertically into two sites, control and test sites. Test sites were subjected to bracket bonding and de-bonding procedures. Enamel changes in color and brightness were evaluated twice, after brackets de-bonding as a base line reading, and after 10 days of incubation in tea and coffee. Vita Easy-Shade spectrophotometer was used for recording the changes in classical shade guide and L* values (lightness). Results: The mean Classical and L* value changes in both groups, tea and coffee, showed a significant discolora...