Keywords : Spectrophotometer
EVALUTION OF COLOR STABILITY OF FIBER REINFORCED COMPOSITE WIRES AND OTHER COATED AESTHETIC ARCH WIRES
European Journal of Molecular & Clinical Medicine,
2020, Volume 7, Issue 11, Pages 5194-5200
Objectives:Aesthetics in orthodontics has become an essential goal, rather than the necessity. To alleviate the esthetic demand, coated metallic wires were introduced, however the color of coated arch wires degrades over time due to external stains.The aims of the study were to evaluate the color stability of fiber reinforced composite wires and coated arch wires after exposure of staining solution for 7, 14 and 21 days. Materials and methods: Fiber reinforced composite wires (Biomers), Optiflex (Armco), Epoxy coated NiTi wire (G & H) and Rodhium coated NiTi wires (American orthodontics) with cross section dimensions of 0.018” were evaluated for color stability after exposure of staining solution for 7, 14 and 21 days.The colormeasurement of each sample was performed using a spectrophotometer.The data were converted to National Bureau of Standards (NBS) units, to relate the amount of color change (∆E*) to a clinical environment. One-way ANOVA test was used to compare the ΔE* value (color change) amongthe different wire brands at different time period. Tukey’s honestly significant difference test (HSD) was performed to test any statistically significant difference in ΔE* value (color change) between any two groups. Results: While comparing the significance, all wires show statistical significance with other having more significant value towards epoxy coated NiTi wire. Conclusion: Noticeable color changes are observed in all esthetic arch wires when in contact with a staining solution after 21 days. Among the four types of arch wires evaluated in the study, Fiber reinforced composite arch wire exhibited more color change and epoxy coated NiTi arch wire showed a mild color change.