User Experience, Satisfaction, and Complications of Direct-to-Consumer Orthodontics in Spain: A Cross-Sectional Study.

Among those with insurance, 20% of DrSmile ® users, 7.69% of Impress ® users, and 50% of SmileDirectClub ® users had to use their coverage, although these differences did not reach statistical significance ( p = 0.161). 3.6.

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