反复快速扩缩弓配合前方牵引治疗骨性Ⅲ类错牙合畸形的疗效评估  

Effect of Repetitive Rapid Palatal Expansions and Constrictions with the Maxillary Protraction in the Treatment of SkeletalⅢMalocclusion

作　　者：余赛男 YU Sainan(Department of Stomatology,the Second Affiliated Hospital of Chengdu Medical College,Chengdu 610000,Sichuan,China)

机构地区：[1]成都医学院第二附属医院核工业416医院口腔科,四川成都610000

出　　处：《中国美容医学》2023年第12期136-141,共6页Chinese Journal of Aesthetic Medicine

摘　　要：目的:研究对于上颌骨宽度正常的早期骨性Ⅲ类患者,前方牵引治疗前使用反复快速扩缩弓的疗效。方法:选取上颌宽度正常的30例早期骨性Ⅲ类患者,随机分为两组,A组采用Hyrax螺旋扩弓器反复快速扩缩牙弓6周后再进行前方牵引矫治,扩缩弓治疗前后取硅橡胶硬模并翻制石膏模型。B组6周后开始矫治,口内佩戴Hyrax扩弓器但不加力,进行前方牵引矫治。对两组患者治疗前后的头影测量值进行统计分析。采用电子数显游标卡尺测量A组扩缩前后的牙弓前后段宽度并对测量值进行统计学分析。结果:A组SNA、ANB、Wits值、A-Np平均增加值分别为3.15°、4.36°、4.48°、2.53mm,均高于B组,其差异有统计学意义。A组患者反复快速扩缩上牙弓治疗前后,患者的牙弓前段宽度及后段宽度与扩缩前水平相当,差异无统计学意义(P>0.05)。结论:对于上颌骨宽度正常的早期骨性Ⅲ类错牙合患者而言,前方牵引治疗前采用螺旋扩弓器对上颌进行反复快速扩缩弓,可获得比单纯前方牵引更好的临床疗效且不会明显扩大患者的上颌牙弓。Objective To analyze the effect of maxillary recurrent expansion in the anterior traction of malocclusion in the treatment of early skeletal classⅢwith normal maxillary width.Methods Thirty children with retrognathic maxilmla were selected and randomly divided into two treatment groups.children were in group A received repetitive rapid palatal expansions/constrictions combin therapy for 6 weeks before maxillary protraction.Before and after the treatment,the rigid silicone rubber mold was taken and the plaster model was made.children were in group B received Hyrax expander without force after 6 weeks before maxillary protraction.The cephalometric measurements before and after treatment were statistically analyzed.The width of molar and canine alveolar before and after expansions/constrictions combin therapy in group A was measured by electronic digital vernier caliper,and the measured value was statistically analyzed.Results The average increase of SNA,ANB,Wits and A-Np in group A was 3.15°,4.36°,4.48°and 2.53 mm,respectively,which were higher than those in group B,the difference was statistically significant.There was no significant difference in the width of canine and molar before and after rapid palatal expansions/constrictions combin therapy.Conclusion The rapid expansion and contraction of maxillary arch before the treatment of anterior traction can obtain better clinical effect than that of simple maxillary protraction and will not significantly expand the upper arch of patients.

关 键 词：前方牵引 快速扩缩牙弓 骨性Ⅲ类 上颌发育不足 

分 类 号：R783.5[医药卫生—口腔医学]