lingual orthodontics; lingual braces
Medical term for orthodontic treatment where braces are attached to the inner (tongue) side of the teeth.
Lingual orthodontics is popular because the appliance is hard to see from the outside.
General term for orthodontic treatment; 舌側矯正 specifically refers to the lingual (tongue-side) approach.
Compound of 舌側 (lingual side) and 矯正 (correction, orthodontics).