Tabatabaie F, Sonnesen L, Kjaer I
Department of Orthodontics, Institute of Odontology, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark.
Orthod Craniofac Res. 2008 May;11(2):96-104. doi: 10.1111/j.1601-6343.2007.00419.x.
The purpose of this study was to describe the neurocranial and craniofacial morphology on profile radiographs of children with single median maxillary central incisor (SMMCI).
Cephalometric analyses of neurocranium and craniofacial morphology on profile radiographs.
Department of Orthodontics, School of Dentistry, University of Copenhagen. Thirteen children with SMMCI, 12 girls and one boy (7-17 years of age).
Cephalometric measurement were compared with normal standards using a paired t-test and Wilcoxon signed rank test.
The size of the neurocranium (especially the length of the anterior cranial base), the maxillary prognathia, the maxillary inclination, the mandibular prognathia and the inclination of the mandibular incisors are significantly reduced in SMMCI. The mandibular inclination, the vertical jaw relationship, the alveolar bone prognathia in the upper jaw and the mandibular angle are significantly enlarged in SMMCI.
The present study showed that occurrence of SMMCI is a sign of a developmental anomaly associated with deviations in neurocranial size and shape and in craniofacial morphology.
本研究旨在描述单颗上颌正中切牙（SMMCI）患儿侧位X线片上的颅神经和颅面形态。
对侧位X线片上的颅神经和颅面形态进行头影测量分析。
哥本哈根大学牙科学院正畸科。13名单颗上颌正中切牙患儿，12名女孩和1名男孩（7至17岁）。
采用配对t检验和Wilcoxon符号秩检验将头影测量结果与正常标准进行比较。
SMMCI患儿的颅神经大小（尤其是前颅底长度）、上颌前突、上颌倾斜度、下颌前突和下颌切牙倾斜度显著减小。SMMCI患儿的下颌倾斜度、垂直颌关系、上颌牙槽骨前突和下颌角显著增大。
本研究表明，单颗上颌正中切牙的出现是一种发育异常的标志，与颅神经大小和形状以及颅面形态的偏差有关。
