Replacement of a first molar and 3 second molars by the mesial inclination of 4 impacted third molars in an adult with a Class II Division 1 malocclusion
Replacement of a first molar and 3 second molars by the mesial inclination of 4 impacted third molars in an adult with a Class II Division 1 malocclusion
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DOI：
10.1016/j.ajodo.2014.05.030
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发表时间：
2015-06-01
影响因子：
3
通讯作者：
Miyawaki, Shouichi
中科院分区：
文献类型：
--
作者：
Tomonari, Hiroshi;Yagi, Takakazu;Miyawaki, Shouichi
本病例报告介绍用4颗阻生第三磨牙的近中倾角成功置换1颗第一磨牙和3颗第二磨牙。女性，23岁6个月，主诉前牙拥挤，左侧第二磨牙舌斜。全身性x线片显示双侧上颌、下颌第三磨牙阻生。怀疑上颌第二磨牙远端表面牙根吸收。患者被诊断为Angle II类1类错颌，前牙严重拥挤，4颗阻生第三磨牙。拔除治疗后的上颌第二前磨牙和两侧第二磨牙，拔除左侧下颌第二前磨牙和第二磨牙，拔除右侧牙根管充填的下颌第一磨牙后，4颗阻生第三磨牙竖立，构成后牙功能闭塞的一部分。总有效治疗期39个月。两侧的上颌和下颌第三磨牙成功替代第一和第二磨牙。用阻生的第三磨牙代替受损的磨牙是使用健康牙齿的一种有效的治疗选择。
This case report presents the successful replacement of 1 first molar and 3 second molars by the mesial inclination of 4 impacted third molars. A woman, 23 years 6 months old, had a chief complaint of crowding of her anterior teeth and linguoclination of a second molar on the left side. The panoramic radiographic images showed that the maxillary and mandibular third molars on both sides were impacted. Root resorption on the distal surfaces of the maxillary second molars was suspected. The patient was given a diagnosis of Angle Class II Division 1 malocclusion with severe crowding of the anterior teeth and 4 impacted third molars. After we extracted the treated maxillary second premolars and the second molars on both sides, the treated mandibular second premolar and the second molar on the left side, and the root canal-filled mandibular first molar on the right side, the 4 impacted third molars were uprighted and formed part of the posterior functional occlusion. The total active treatment period was 39 months. The maxillary and mandibular third molars on both sides successfully replaced the first and second molars. The replacement of a damaged molar by an impacted third molar is a useful treatment option for using sound teeth.