Abstract
Objective: Color of natural teeth changes after orthodontic treatment. The aim of the study was to evaluate color changes of enamel before and after fixed mechanotherapy and compare the effects of different staining agents on enamel discoloration. Materials and Methods: Hundred freshly extracted premolars were divided into four groups of n = 25 each. Baseline color measurements were taken before bonding through reflectance spectrophotometer (X-Rite i1Pro). Postbonding samples were suspended in test solutions; Group 1 (control group) samples stored in distilled water and Group 2, 3, and 4 in tea, coffee, and turmeric solutions, respectively for a week. The samples were then debonded and cleaned with eight fluted tungsten carbide bur followed by pumicing. Color evaluations were made in accordance with Commission Internationale de l'Eclairage L* a* b color system. ΔE values were compared for samples before and after debonding. Results: Mean ΔE difference value was found maximum for Group 3 (mean 12.4560, standard deviation [SD] 4.7207) and minimum for Group 1 (mean 9.7120 SD 4.2009). One-way ANOVA was used for intergroup comparison with P Conclusion: Orthodontic bonding and debonding procedures have an effect on enamel discoloration clinically, although various stains used in the study had no statistical significant difference among themselves.
Highlights
The adhesion between orthodontic resins and enamel is exceptional in dentistry it is recommended to be temporary, yet it should be durable enough to withstand orthodontic forces
Bonding, debonding, and clean‐up procedures may result in enamel changes such as microcracks and enamel fractures caused by either forcibly removing brackets or scratches and abrasions caused by mechanical removal of the remaining composite materials.[2]
Enamel discoloration may occur by direct absorption of food colorants and products arising from the corrosion of the orthodontic appliance even after orthodontic treatment.[3]
Summary
The adhesion between orthodontic resins and enamel is exceptional in dentistry it is recommended to be temporary, yet it should be durable enough to withstand orthodontic forces. Color alterations in enamel may result from the irreversible penetration of resin tags into the enamel structure at depths reaching up to 50 μm. Enamel discoloration may occur by direct absorption of food colorants and products arising from the corrosion of the orthodontic appliance even after orthodontic treatment.[3]
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