Department of Orthodontics, Affiliated Dongyang Hospital of Wenzhou Medical University, Dongyang, Zhejiang, China.
Department of Orthodontics, Dongyang People's Hospital, Dongyang, Zhejiang, China.
Medicine (Baltimore). 2024 Nov 29;103(48):e40184. doi: 10.1097/MD.0000000000040184.
The aim of this study was to explore the differences in alveolar bone structure characteristics in skeletal class II and class III malocclusion in the mandibular incisor region. From January 2021 to November 2023, 100 cases of skeletal malocclusion patients were selected from our hospital, including 56 cases of skeletal Class II malocclusion and 44 cases of skeletal Class III malocclusion. The alveolar bone structure characteristics in the mandibular incisor region of skeletal class II and class III malocclusion patients are compared. The labial alveolar bone attachment height and lingual alveolar bone attachment height were compared between patients with skeletal Class II and Class III malocclusion (P < .05). The labial alveolar bone thickness at the root apex in patients with skeletal Class II malocclusion was (3.96 ± 0.63) mm, which was higher than that in Class III malocclusion patients (P < .05). In patients with skeletal Class II malocclusion, the cementoenamel junction was 2, 4, 6 mm below, and at the root apex, the alveolar bone thickness was (0.19 ± 0.05) mm, (0.93 ± 0.10) mm, (2.10 ± 0.10) mm, and (12.26 ± 2.10) mm, respectively, which was higher than that in Class III malocclusion patients (P < .05). In patients with skeletal Class II malocclusion, the labial side alveolar bone area at the root apex was (3.89 ± 0.72) mm2, which was higher than in Class III malocclusion patients (P < .05). On the lingual side, the alveolar bone thickness below cementoenamel junction at 6 mm and at the root apex was (1.95 ± 0.45) mm2 and (1.92 ± 0.51) mm2, respectively, which were higher than in Class III malocclusion patients (P < .05). Compared to skeletal Class II malocclusion, in skeletal Class III malocclusion, the alveolar bone thickness in the mandibular incisor area is thinner and narrower. This should be given special attention during orthodontic treatment.
本研究旨在探讨下颌切牙区骨性 II 类和 III 类错（牙合）畸形患者牙槽骨结构特征的差异。选取 2021 年 1 月至 2023 年 11 月我院收治的骨性错（牙合）畸形患者 100 例，其中骨性 II 类错（牙合）56 例，骨性 III 类错（牙合）44 例。比较骨性 II 类和 III 类错（牙合）患者下颌切牙区牙槽骨结构特征。比较骨性 II 类和 III 类错（牙合）患者的唇侧牙槽骨附着高度和舌侧牙槽骨附着高度（P<.05）。骨性 II 类错（牙合）患者下颌切牙区根尖端唇侧牙槽骨厚度为（3.96±0.63）mm，高于骨性 III 类错（牙合）患者（P<.05）。骨性 II 类错（牙合）患者中，釉牙骨质界下方 2、4、6mm 处牙槽骨厚度分别为（0.19±0.05）mm、（0.93±0.10）mm、（2.10±0.10）mm、（12.26±0.10）mm，高于骨性 III 类错（牙合）患者（P<.05）。骨性 II 类错（牙合）患者下颌切牙区根尖端唇侧牙槽骨区面积为（3.89±0.72）mm2，高于骨性 III 类错（牙合）患者（P<.05）。舌侧牙槽骨在釉牙骨质界下方 6mm 处和根尖端处的厚度分别为（1.95±0.45）mm2和（1.92±0.51）mm2，高于骨性 III 类错（牙合）患者（P<.05）。与骨性 II 类错（牙合）相比，骨性 III 类错（牙合）患者下颌切牙区牙槽骨厚度较薄，牙槽骨较窄。在正畸治疗中应特别注意这一点。
