裏うら側がわ矯きょう正せい

noun

lingual braces

Dental term for braces attached to the back (tongue side) of the teeth, as opposed to the front (labial) side.

• 裏うら側がわ矯きょう正せいは、装そう置ちが目め立だたないので人にん気きがあります。

  Lingual braces are popular because the appliance is not noticeable.