利用SBL线评价上颌前方牵引治疗骨性Ⅲ类错[牙合]畸形的疗效  

Evaluation of the effect of maxillary expansion and face-mask therapy on the treatment of skeletal ClassⅢmalocclusion using stable basicranial line

作　　者：任超超[1] 于文琪 王凡[1] REN Chao-chao;YU Wen-qi;WANG Fan(Department of Orthodontics,Capital Medical University School of Stomatology,Beijing 100050,China)

机构地区：[1]首都医科大学口腔医学院正畸科,北京100050

出　　处：《北京口腔医学》2023年第4期255-259,共5页Beijing Journal of Stomatology

摘　　要：目的利用相对稳定的颅底线平面SBL线(stable basicranial line)做基准平面,评价生长发育期骨性Ⅲ类错牙合畸形患者采用前方牵引矫治技术的临床疗效。方法回顾采用上颌快速扩弓联合前方牵引治疗的生长发育期骨性Ⅲ类患者30例,以SBL线作为基准平面,测量上下颌骨各参考点至SBL垂线(VerT)距离,并以传统的头影测量指标为对照,采用python软件中的配对t检验进行数据统计分析,确定SBL线在上下颌骨发育评估方面可靠性。结果以SBL线为基准,ANS-VerT、A-VerT、鼻尖点-VerT、Sn-VerT在前方牵引治疗前后观察到明显差异,治疗后线距增加,说明上颌骨硬组织以及软组织均发生前移。G-VerT、PNS-VerT、B-VerT、Po-VerT、D-VerT、Pos-VerT在治疗前后未观察到明显差异。说明额部,下颌骨在矢状线距没有发生明显前移。结论前方牵引治疗可以有效改善生长发育期骨性Ⅲ类上下颌骨位置关系,以SBL线为参考平面的测量指标的结果更为客观,这种基于颅底线平面的线距测量能直观的反映出上颌前方牵引后的牙合面关系的矢状向改善。Objective To evaluate the effect of maxillary expansion and face-mask therapy in children with skeletal ClassⅢmalocclusion.Methods A total 30 patients with maxillary deficiency were collected.The stable basicranial line(SBL)was used as the reference plane to measure the distance from each reference point of the maxilla and mandible to the stable basicranial vertical line(VerT).The traditional cephalometric indicators were used as control.The paired t-test in python was used for statistical analysis to determine the reliability of the SBL in the evaluation of maxilla and mandible development.Results Significant changes of ANS-VerT,A-VerT,nasal tip-VerT and Sn-VerT were observed.No significant changes of G-VerT,PNS-VerT,B-VerT,Po-VerT,D-VerT and Pos-VerT were observed.Conclusions Face-mask therapy combined with expansion can effectively improve skeletal classⅢmalocclusion.The results of the measurement with stable basicranial reference system are more objective.

关 键 词：前方牵引 颅底线平面 上颌快速扩弓 头影测量 

分 类 号：R783.5[医药卫生—口腔医学]