凹面型患者的正畸正颌联合治疗

The Effect of Orthodonticorthognathic Treatments for Concave Type Patients

目的:探讨正畸正颌联合治疗凹面型患者的临床疗效。方法:本研究选取52例凹面型患者,治疗前后对比临床评价面部畸形的矫治效果,采用正畸正颌外科联合治疗,并分别于术前、治疗后1周、治疗后12个月拍摄头颅定位侧位/CBCT,测量A点水平移动量和ANB角变化。结果:术后,上颌骨前移明显,ANB角增加7°～10°,面部软组织鼻尖点、鼻底点及上唇最突点明显前移,面中部外形得到明显改善,上下前牙获得正常覆、覆盖关系。随访12～36个月,面部外形及咬合关系保持稳定。结论:凹面型患者采用正畸正颌联合治疗可取得良好效果,并避免了口颌系统继发畸形和功能障碍的发生。

Objective To explore the effect of orthodonticorthognathic treatments on concave type patients.Methods52concave patients were included in this study,then compared the clinical effects of facial deformities before and after treatment.Lateral cephalograms/CBCT was taken before surgery,one week after orthognathic surgery and12months after orthognathic surgery.the position of point A on horizontal direction and ANB angles were collected and analyzed.Results The maxillary moved forward obviously,the ANB angles increased7to11degrees after treatment.As regard to the soft tissues,the nasal tip,the base of the column,and the protruding point of the upper lip were moved forward prominently.The appearance of the middle face was obviously improved,and the upper and lower front teeth got normal overlap and overbite relation.Facial appearance and occlusal relationship remained stable during the follow up period of12to36months.Conclusion The combined orthodontic and orthognathic treatment for concave patients has achieved good results and avoided secondary deformities and dysfunction of the oral and maxillofacial system.