混合牙列期上頜前牙多生牙伴反頜的2×4技術(shù)矯治效果分析

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【摘要】目的：探析混合牙列期上頜前牙多生牙伴反頜的2×4技術(shù)矯治效果。方法：選取2021年1月—2022年12月期間于我院就診的46例混合牙列期上頜前牙多生牙伴反頜患兒，通過拍攝曲面斷層片或者CT片，定位多生牙，將其拔除植骨修復(fù)后，對(duì)患兒予以2×4技術(shù)矯治，分析臨床治療效果。結(jié)果：經(jīng)過6～7個(gè)月的2×4技術(shù)矯治，患兒前牙反頜被解除，磨牙關(guān)系不變或輕度改善，相較于治療前，46例患兒治療后SNA角、U1-NA角、SNB角、ANB角、Y軸角、U1-SN、Co-Po均有顯著提升（P

【關(guān)鍵詞】混合牙列期；上頜前牙多生牙；植骨修復(fù)；反頜；2×4矯治技術(shù)；生活質(zhì)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，which were removed and repaired with bone grafting，then provided “2×4”technical correction to the child and analyze the clinical therapeutic effect.Results：After from 6 to 7 months of “2×4”technical correction，the anterior crossbite of the child’s teeth were relieved，and the molar relationship remained unchanged or slightly improved.Compared with before treatment，46 patients showed significant improvement in SNA angle，U1-NA angle，SNB angle，ANB angle，Y-axis angle，U1-SN，Co-Po after treatment（P

【Key Words】Mixed dentition； Supernumerary teeth of maxillary anterior teeth； Bone graft repair； Crossbite；“2×4” orthopedic technology； Quality of life

人類有兩副牙齒，一副為乳牙（20顆），另一副為恒牙（28～32顆），在乳牙脫落、恒牙替換乳牙這一過程中，乳牙和恒牙會(huì)有一個(gè)共存時(shí)期，即為混合牙列期（6～12歲之間）[1]。（剩余3882字）