of orthodontic treatment. The complex design of fixed orthodontic appliances (FAs) makes it
difficult to perform proper oral hygiene, which amounts to white spot lesions being three
times more prevalent in patients wearing orthodontic appliances. As clear thermoplastic
aligners (CAs) are removable appliances, it has been speculated that they allow better oral
hygiene maintenance and thus less incidence of WSLs. OBJECTIVES: This evidence-based …