改良型FRⅢ与“2×4”矫治技术治疗替牙期前牙反[牙合]的疗效研究

Study on the efficacy of FRⅢand“2×4”techniques in the treatment of mixed dentition anterior crossbite

目的比较改良型FRⅢ与“2×4”矫治技术治疗替牙期前牙反[牙合]患者的软硬组织变化,评价两种矫治方法的治疗效果,为临床选择应用提供理论参考。方法收集2018年9月至2022年10月在川北医学院第二附属医院口腔科门诊治疗的替牙期前牙反[牙合]患者30例作为研究对象,根据治疗方法不同分为观察组(改良型FRⅢ,n=15)和对照组(“2×4”矫治技术,n=15)。对两组病例矫治前后的软硬组织位置变化进行对比分析。结果治疗完成后,观察组SNA、ANB、MP-FH、Y轴角、U1-SN、U1-NA、NLA、PLA、FCA、ULP增加(P<0.05),SNB、L1-MP减小(P<0.05);对照组SNA、ANB、MP-FH、U1-SN、U1-NA、Y轴角、NLA、FCA增加(P<0.05),SNB、L1-MP、L1-NB减小(P<0.05);两组之间,SNB、ANB、SN-MP、NLA、L1-MB、PLA、FCA的变化量比较具有明显差异(P<0.05)。结论两种技术治疗均取得良好的治疗效果,前牙反[牙合]得到有效解除,咬合关系及面型恢复正常,具有临床应用价值,值得推广。改良型FRⅢ更好地改善软组织侧貌和面型,而“2×4”矫治技术用时更短,牙列关系得到更好的解决。

Objective By comparing the changes in soft and hard tissue of patients with anterior crossbite dentition treated with the modified FRⅢand“2×4”orthodontic techniques,to evaluate the therapeutic effects of two orthodontic methods,so as to provide the⁃oretical reference for clinical selection and application.Methods Thirty patients with anterior crossbite dentition treated in the outpa⁃tient clinic of the Second Affiliated Hospital of North Sichuan Medical College from September 2018 to October 2022 were collected,and divided into the observation group(modified FRⅢ,n=15)and control group(“2×4”orthodontic technique,n=15)according to the treatment method.Changes in the position of hard and soft tissues of the two groups before and after orthodontic treatment were compared.Results After treatment,an increase in the SNA,ANB,MP⁃FH,Y⁃axis angle,U1⁃SN,U1⁃NA,NLA,PLA,FCA and ULP was revealed in the observation group(P<0.05)along with a decrease in the SNB and L1⁃MP.In control group,SNA,ANB,MP⁃FH,U1⁃SN,U1⁃NA,Y⁃axis angle,NLA,FCA increased(P<0.05);SNB,L1⁃MP,L1⁃NB decreased(P<0.05).Significant difference was found in the number of changes in SNB,ANB,SN⁃MP,NLA,L1⁃NB,PLA and FCA between the two groups(P<0.05).Conclusion Both techniques achieved good treatment outcomes.Anterior teeth were effectively released,followed by the nor⁃malized occlusal relationship and facial shape,which is worth promoting for clinical application.The modified FRⅢcould more promi⁃nently contribute to improving the lateral appearance and facial shape of soft tissues,while the“2×4”orthodontic technique costs less time and provides a better resolution for tooth alignment.