Dental and alveolar arch widths in normal occlusion, class II division 1 and class II division 2.
Dental and alveolar arch widths in normal occlusion, class II division 1 and class II division 2.
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DOI：
10.1043/0003-3219(2005)75
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发表时间：
2005-11
期刊：
影响因子：
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通讯作者：
T. Uysal;Badel Memili;S. Usumez;Z. Sari
中科院分区：
文献类型：
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作者：
T. Uysal;Badel Memili;S. Usumez;Z. Sari
本研究的目的是比较安氏II类1分类和II类2分类错牙合与正常牙合受试者尖牙、前磨牙和磨牙区牙弓和牙槽弓的横径。对150例正常牙合(平均年龄21.6±-2.6岁)、106例II类1分类错牙合患者(平均年龄17.2±-2.4岁)和108例II类II类错(牙合)患者(平均年龄18.5±-2.9岁)的牙型进行了测量。组间比较采用独立样本t检验。这些结果表明，安氏II类1分类错(牙合)患者的上颌解释磨牙宽度、上颌尖牙、前磨牙和磨牙牙槽宽度以及下颌前磨牙和磨牙牙槽宽度均显著小于正常牙合样本。安氏II类2分类样本的上颌解释磨牙宽度、尖牙和前磨牙牙槽宽度以及所有下颌牙槽宽度均明显小于正常牙合标本。与II类1组相比，II类1类受试者下颌尖牙间宽度和下颌尖牙间宽度较窄，上颌磨牙间宽度较大。安氏II类1分类错(牙合)受试者上颌磨牙倾向于向颊倾斜，以弥补牙槽基牙的不足。因此，在治疗II类1分类患者之前或期间，可以考虑快速扩张上颌骨，而不是缓慢扩张。
The aim of this study was to compare the transverse dimensions of the dental arches and alveolar arches in the canine, premolar, and molar regions of Class II division 1 and Class II division 2 malocclusion groups with normal occlusion subjects. This study was performed using measurements on dental casts of 150 normal occlusion (mean age: 21.6 +/- 2.6 years), 106 Class II division 1 (mean age: 17.2 +/- 2.4 years), and 108 Class II division 2 (mean age: 18.5 +/- 2.9 years) malocclusion subjects. Independent-samples t-test was applied for comparisons of the groups. These findings indicate that the maxillary interpremolar width, maxillary canine, premolar and molar alveolar widths, and mandibular premolar and molar alveolar widths were significantly narrower in subjects with Class II division 1 malocclusion than in the normal occlusion sample. The maxillary interpremolar width, canine and premolar alveolar widths, and all mandibular alveolar widths were significantly narrower in the Class II division 2 group than in the normal occlusion sample. The mandibular intercanine and interpremolar widths were narrower and the maxillary intermolar width measurement was larger in the Class II division 2 subjects when compared with the Class II division 1 subjects. Maxillary molar teeth in subjects with Class II division 1 malocclusions tend to incline to the buccal to compensate the insufficient alveolar base. For that reason, rapid maxillary expansion rather than slow expansion may be considered before or during the treatment of Class II division 1 patients.