Department of Pediatric Dentistry, School of Dentistry, Seoul National University, Korea.
Am J Orthod Dentofacial Orthop. 2012 May;141(5):556-62. doi: 10.1016/j.ajodo.2011.11.015.
The aim of this study was to examine whether there is a relationship between the position of impacted maxillary canines and the morphology of the maxilla.
The palatally impacted canine group included 18 boys and 27 girls with an average age of 12 years 9 months (±2 years 1 month). The buccally impacted canine group comprised 19 boys and 26 girls with an average age of 12 years 2 months (±1 year 4 months). Arch length/intermolar width × 100 was used as the value for comparison of maxillary arch shapes, and palatal vault depth/intermolar width × 100 was used to compare the shapes of palate between the 2 groups. Each category was directly measured from the diagnostic model.
Both the arch length/intermolar width × 100 and the palatal vault depth/intermolar width × 100 formulas showed statistically significant differences (P <0.0001), indicating differences in the shape of maxillary arch and the palatal vault between the 2 groups.
The shape of the maxillary arch was narrower and longer in the palatally impacted canine group compared with the buccally impacted canine group, and the palatally impacted canine group had a deeper palatal vault than did the buccally impacted canine group.
本研究旨在探讨上颌埋伏尖牙的位置与上颌形态之间是否存在关系。
腭侧埋伏尖牙组包括 18 名男孩和 27 名女孩，平均年龄为 12 岁 9 个月（±2 岁 1 个月）。颊侧埋伏尖牙组包括 19 名男孩和 26 名女孩，平均年龄为 12 岁 2 个月（±1 岁 4 个月）。采用上颌弓长/磨牙间宽度×100 作为比较上颌弓形态的数值，采用腭穹窿深度/磨牙间宽度×100 作为比较两组腭部形态的数值。每个类别均直接从诊断模型中测量。
上颌弓长/磨牙间宽度×100 和腭穹窿深度/磨牙间宽度×100 公式均显示出统计学上的显著差异（P<0.0001），表明两组之间上颌弓和腭穹窿的形态存在差异。
与颊侧埋伏尖牙组相比，腭侧埋伏尖牙组的上颌弓形状更窄更长，腭穹窿更深。
