This in vitro analysis compares color and surface stability of various clear aligners, indicating significant differences in performance.
Key Points
All samples except the Dreve film showed marked color changes after 12 hours in curcumin solutions, demonstrating significant color instability.
Invisalign aligners displayed significantly higher ΔE* values compared to Dreve after exposure to curcumin, implying greater susceptibility to color changes.
Surface characteristics were analyzed using scanning electron microscopy (SEM) and atomic force microscopy (AFM) to assess stability post-staining.
These findings suggest that improving the aesthetic durability of orthodontic materials could enhance overall patient satisfaction.