Upper arch was asymmetry in these patients, the arch width of deviated side (the side that the chin was deviated to) was broader than the other side.

• 骨性下颌前突伴偏斜患者的上牙弓左右不对称 ,偏斜侧 (下颌颏部所指向的一侧 )牙弓宽度明显大于对侧。