Evaluation Of The Effects Of Staining Solutions On Enamel After Orthodontic Bracket Debonding, Following Different Finishing Procedures-An In-Vitro Study

Abstract

OBJECTIVE: To evaluate the effect of staining solutions on the enamel after orthodontic bracket debonding followed by different finishing procedures.

MATERIAL AND METHOD: Metal brackets were bonded to extracted human premolars (n=90). After 24 hours of photoaging, brackets were removed and samples were randomly divided into three groups, Group I (Tungsten carbide), Group II (Sof-Lex discs), and Group III (Tungsten carbide with Enhance finishing and polishing system). To evaluate stain susceptibility, teeth were immersed in turmeric solution, coffee solution, and artificial saliva. Color assessment of all the teeth was performed using a Spectrophotometer at baseline before bonding, after the finishing procedure, and after the staining procedure. The Statistical analysis was carried out to compare the effects of different resin removal techniques and staining methods.

RESULT: Kruskal Wallis ANOVA test revealed that there is a statically significant difference between the mean ranks in color change (ΔE) among the three groups. Pairwise comparison using Dunn’s test showed that there is no significant difference between Tungsten carbide and Sof-Lex discs, whereas the difference between combination of Enhanced finishing system and Tungsten carbide with the other groups were significant. Pairwise comparison using Dunn’s test showed that turmeric caused a significant change in ΔE compared to artificial saliva among the tungsten carbide and Sof-Lex disc group. Maximum color change is noticed with turmeric followed by coffee and artificial saliva.

CONCLUSION: The turmeric solution displayed a definite discoloration of teeth after debonding. However, when thecombination of 30-fluted tungsten carbide bur and Enhance finishing and polishing system were used, resulted in less amount of enamel staining.

Clinical significance: Patient’s diet, oral hygiene, bonding and debonding procedures affect tooth color during orthodontic treatment. Hence, it is mandatory for orthodontic patients to undergo routine oral prophylaxis.