双颌前突患者正颌手术及拔牙矫治的软组织变化分析

目的: 通过对双颌前突患者正畸及正颌治疗的软组织测量比较,确定两种治疗方法对双颌前突患者软组织改变的贡献程度,为临床治疗提供参考. 方法: 对27例双颌前突患者按其治疗方法分为正畸和正颌组,并进行11项软组织的头颅侧位定点片的测量,利用SPSS 11.5统计软件进行配对t检验. 结果: 正畸组患者除了面型角、颏突角和全面突角外,其他各项反映面下三分之一的测量指标均有改变,其中上唇及下唇至E线的距离有明显改善(Ls-PnPg平均减小3.0 mm, Li-PnPg平均减小3.7 mm, P<0.05), 正颌组除去Go-Gn-Sn,其他指标均有明显改变(P<0.05). 结论: 正畸和正颌方法均能改善双颌前突患者面下三分之一的颏唇软组织面形,但正颌方法对颏部的改善要强于单纯正畸方法.

Soft tissue changes of bimaxillary protrusion by orthodontics treatment or orthognathic surgery

AIM: To assess the effects of orthodontics treatment or orthognathic surgery on the soft-tissue changes of bimaxillary protrusion patients. METHODS: Fourteen orthodontically-treated cases and 13 surgically-treated cases were chosen. Eleven hard and soft-tissue measurements were analyzed by SPSS statistical software. RESULTS: The soft tissues of the orthodontically-treated group had significant changes (P<0.05) in all the measurements except for G-Sn-Pg', S-N'-Pg, Go-Gn-Sn, and G-Pn-Pg'. Ls-PnPg' decreased 2.95 mm on average and Li-PnPg' decreased 3.71 mm on average (P< 0.05 ). The soft tissues of the surgically-treated group also had significant changes in all the measurements except for Go-Gn-Sn. CONCLUSION: Both orthodontical treatment and orthognathic surgery can change the soft tissues of bimaxillary protrusion patients. Orthognathic surgery is better than simple orthodontical treatment in improving the shape of soft chin of bimaxillay protrusion.