個性化方案矯治先天性下頜恒切牙缺失臨床分析

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[摘要]本文患者為年輕女性，骨性Ⅱ類，下頜先天性缺失一顆恒切牙，因面突、牙齒前突、不齊求治。根據(jù)患者的具體情況，采取個性化治療方案。拔除14、24、26，35、45、47，矯正28、48，關(guān)閉所有拔牙間隙。患者治療后前牙覆牙合覆蓋正常，右側(cè)尖牙及磨牙Ⅰ類關(guān)系，左側(cè)尖牙及磨牙為Ⅲ類關(guān)系。

[關(guān)鍵詞]下頜恒切牙；先天性牙齒缺失；骨性Ⅱ類；牙齒前突；拔牙矯治

[中圖分類號]R783.5    [文獻(xiàn)標(biāo)志碼]B    [文章編號]1008-6455（2024）01-0129-04

Clinical Analysis of Correction of Congenital Mandibular Permanent Incisor Tooth Loss with Personalized Treatment

ZENG Siting1，2，DENG Jiajun1，SHAO Qunle1，CHEN Jianming3，ZHOU Shaoyun1

（1.Department of Stomotology， Guangzhou Medical University Second Affiliated Hospital， Guangzhou 510260，Guangdong，China; 2.Department of Stomotology，Shenzhen Luohu Hospital of Traditional Chinese Medicine，Shenzhen 518009，Guangdong，China; 3.Department of Orthodontics，Affiliated Stomatological Hospital of Guangzhou Medical University，Guangzhou 510180，Guangdong，China）

Abstracts： This article reported a young female with Skeletal Ⅱ Malocclusion and congenitally missing mandibular incisor， whose chief complaints were facial protrusion， teeth protrusion and misaligned teeth. According to the specific situation of the patient， an individualized treatment plan is adopted. Not only the maxillary first premolars and the mandible second premolars， but also the maxillary left first molar and the mandible second molar were extracted to level and align arch， while  retaining two third molars in the orthodontic treatment. Fianlly， all the extraction spaces were closed. After treatment， overbite and overjet were normal. The treatment successfully achieved Class Ⅰ relationship of the right canine and molar and a mild Class Ⅲ relationship for the left canine and molar.

Key words： mandibular permanent incisor teeth; congenital tooth loss; Skeletal Ⅱ; teeth protrusion; extraction treatment

先天缺失牙最常見于女性前牙區(qū)，下頜切牙先天缺失發(fā)生率為2.71%，下頜切牙缺失的部位多數(shù)為中切牙[1-2]。（剩余4164字）