带圈垂直开大曲治疗第一恒磨牙异位萌出的临床应用  

Clinical application of open vertical helical loop in the treatment of ectopic eruption of first permanent molar

作　　者：郑琳琳 耿海霞[1] Zheng Linlin;Geng Haixia(Department of Orthdontics,Affiliated Hospital of Jining Medical University,Jining 272000,China)

机构地区：[1]济宁医学院附属医院口腔正畸科,济宁272000

出　　处：《中国医师杂志》2023年第7期1020-1024,共5页Journal of Chinese Physician

基　　金：山东省济宁市重点研发计划项目(2022YXNS059);山东省济宁医学院科研扶持基金项目(JYFC2019FKJ168)。

摘　　要：目的探讨使用带圈垂直开大曲矫正第一恒磨牙异位萌出的临床应用效果,为第一恒磨牙异位萌出的治疗时机、治疗方法的选择提供参考依据。方法回顾性选取2020年—2021年在济宁医学院附属医院就诊的单侧或双侧上颌第一恒磨牙异位萌出患者共30例,年龄6~8.5岁,通过在第二乳磨牙和第一恒磨牙粘接颊面管,应用带圈垂直开大曲远中移动第一恒磨牙使其达到正常位置。对比分析治疗前后的第一恒磨牙近中倾斜角度、侧方牙群牙弓长度以及第二乳磨牙牙根吸收状况。结果30例患者均完成矫正治疗,第一恒磨牙均调整至正常位置,治疗后的第一恒磨牙倾斜角度为(91.3±5.1)°,与治疗前(78.1±6.3)°相比差异具有统计学意义(t=-10.023,P=0.014);治疗后的侧方牙群牙弓长度为(34.0±1.0)mm,与治疗前(31.61±1.1)mm相比显著性增加,差异具有统计学意义(t=-25.96,P=0.007)。治疗后,患侧第二乳磨牙牙根吸收程度相比治疗前显著增加(χ^(2)=12.002,P<0.001);健侧第二乳磨牙治疗前后牙根吸收程度变化差异无统计学意义(P=0.818)。结论使用带圈垂直开大曲矫正上颌第一恒磨牙异位萌出,能有效调整上颌第一恒磨牙异位萌出患者的近中倾斜角度,但应密切关注第二乳磨牙的牙根吸收情况,临床上应早发现早治疗,治疗完成后如第二乳磨牙牙根吸收严重,需及时制作保持器维持牙弓长度。Objective To explore the clinical application effect of open vertical helical loop to correct ectopic eruption of the first permanent molar,and to provide reference for the selection of treatment timing and methods for ectopic eruption of the first permanent molar.Methods A total of 30 patients with unilateral or bilateral ectopic eruption of maxillary first permanent molars,aged from 7 to 8.5 years old,who visited the Affiliated Hospital of Jining Medical University from 2020 to 2021,were retrospectively selected.The first permanent molars were moved to their normal positions by bonding buccal tubes between the second primary molars and the first permanent molars with a vertical loop.We compared and analyzed the mesial inclination angle of the first permanent molar,the length of the lateral dental arch,and the root resorption status of the second deciduous molar before and after treatment.Results All 30 patients underwent complete orthodontic treatment,with the first permanent molar adjusted to its normal position.The inclination angle of the first permanent molar after treatment was(91.3±5.1)°,which was statistically significant compared to(78.1±6.3)°before treatment(t=-10.023,P=0.014);The length of the lateral dental arch after treatment was(34.0±1.0)mm,which was significantly increased compared to(31.61±1.1)mm before treatment,and the difference was statistically significant(t=-25.96,P=0.007).After treatment,the degree of root resorption of the affected second molar significantly increased compared to that before treatment(χ^(2)=12.002,P<0.001);There was no statistically significant change in root resorption before and after treatment of the healthy second molar(P=0.818).Conclusions The use of open vertical helical loop correction for ectopic eruption of maxillary first permanent molar can effectively adjust the mesial inclination angle of patients with ectopic eruption of maxillary first permanent molar.However,close attention should be paid to the root resorption of the second primary molar,and early

关 键 词：牙萌出 异位 磨牙 第一 正畸学 矫正 

分 类 号：R783.5[医药卫生—口腔医学]