高角病例或低角病例的形成主要与前后面部高度的生长发育失调有关。high-angle or low angle cases with a high level of growth and development before and after facial disorders
后面部高度生长不足( 升支短小、关节窝靠前靠上) 和/ 或前面部高度 生长过度( 髁突向后生长、上颌骨垂直发育过度、后牙垂直萌出过度) 形成了高角型。Lack of posterior facial growth ( ascending branchof the glenoid fossa small ) and/or anterior facial height overgrowth(condylar backward growth, excessive eruption of the maxillary posterior teeth) is responsible for a high-angle case.
后面部高度生长过度( 升支较长、关节窝靠后靠下) 和/ 或前面部高度 生长不足( 髁突向上向前生长、上颌骨垂直发育不足、后牙萌出不足) 形成了低角型。 posterior height overgrowth (the ascending branchof a glenoid fossa long) and/or in lack of posterior facial growth (upward and forward rotation of condyle,lack of eruption of maxillary posterior teeth) is resposible for low-angle case.