【摘要】目的：探析混合牙列期上颌前牙多生牙伴反颌的2×4技术矫治效果。方法：选取2021年1月—2022年12月期间于我院就诊的46例混合牙列期上颌前牙多生牙伴反颌患儿，通过拍摄曲面断层片或者CT片，定位多生牙，将其拔除植骨修复后，对患儿予以2×4技术矫治，分析临床治疗效果。结果：经过6～7个月的2×4技术矫治，患儿前牙反颌被解除，磨牙关系不变或轻度改善，相较于治疗前，46例患儿治疗后SNA角、U1-NA角、SNB角、ANB角、Y轴角、U1-SN、Co-Po均有显著提升(P<0.05)；治疗后患儿生活质量各项评分较治疗前均有显著提升(P<0.05)。结论：混合牙列期上颌前牙多生牙伴反颌应用2×4技术矫治，可以改善牙齿咬合关系，解除前牙反颌，提高患儿生活质量。

    【关键词】混合牙列期；上颌前牙多生牙；植骨修复；反颌；2×4矫治技术；生活质量

    Analysis of “2×4” technical correction effect of maxillary anterior supernumerary teeth with crossbite in mixed dentition stage

    SUN Jieming， WANG Xiao， QIU Junping， KANG Bizhou， AN Xin Xianghe County People’s Hospital， Langfang， Hebei 065400， China

    【Abstract】Objective： To explore“2×4” technical correction effect of maxillary anterior supernumerary teeth with crossbite in mixed dentition stage.Methods：From January 2021 to December 2022，46 cases of patients with maxillary anterior supernumerary teeth with crossbite in mixed dentition stage who treated in our hospital were selected.Curved surface tomography or CT scans were taken to locate the supernumerary teeth ......