齿颚矫正学

orthodontics

tooth / CL:顆|颗[ke1]

jaw / palate

surname Jiao

argumentative / contentious

to correct / to rectify / to redress / strong / brave / to pretend / to feign / affectation

to correct / to rectify (e.g. a physical defect such as hearing or vision) / to cure / rectification / correction / to straighten

first month of the lunar year

straight / upright / proper / main / principal / to correct / to rectify / exactly / just (at that time) / right (in that place) / (math.) positive

to learn / to study / to imitate / science / -ology