Equipe d'accueil 3847, Unité de Formation et de Recherche en Odontologie, Université d'Auvergne Clermont1, Clermont-Ferrand, France.
J Oral Rehabil. 2010 Feb;37(2):100-6. doi: 10.1111/j.1365-2842.2009.02024.x. Epub 2009 Nov 17.
The influence of the palatal vault dimensions on tongue position is here studied through evaluation of the in-mouth air cavity (IMAC) volume when the mandible is in maximal intercuspal position. A sample of 35 women (mean age 21.2 +/- 1.0) and 15 men (mean age 22.1 +/- 0.9) was selected. The sagittal cross-section area of the IMAC, which is modulated by the tongue position, was measured on lateral cephalograms. Dental casts were used to measure the palatal vault volume, which was defined by the occlusal plane, the hard palate and the posterior face of the second molars. Palatal vault volume allowed deduction of the IMAC volume through a rule of three procedure relating volume to area ratios. No IMAC could be calculated from cephalograms of 10 subjects who had the tongue stuck to the palate. For the 40 other subjects, the IMAC volume was 8.9 +/- 4.8 mL. It was 2 mL larger in men (n = 14) than in women (n = 26) and was the largest in skeletal Class III and the smallest in skeletal Class II (P > 0.05). IMAC volume was strongly correlated with palatal vault height but neither with palatal width nor length. It was thus assumed that the height of the palatal vault could influence the most observed position of the tongue but this does not exclude a possible growth influence of the tongue on its surrounding skeletal structures.
本研究通过评估下颌处于最大牙尖交错位时口腔内空气腔（IMAC）的体积，来研究腭穹窿维度对舌位的影响。选择了 35 名女性（平均年龄 21.2 +/- 1.0）和 15 名男性（平均年龄 22.1 +/- 0.9）作为样本。通过侧位头颅侧位片测量受舌位调制的 IMAC 的矢状横截面积。使用牙模测量腭穹窿体积，该体积由咬合平面、硬腭和第二磨牙的后表面定义。通过体积与面积比的比例关系，从三个规则中推断出腭穹窿体积，从而得出 IMAC 体积。10 名受试者的舌头顶在上腭，无法从头颅侧位片计算出 IMAC。对于另外 40 名受试者，IMAC 体积为 8.9 +/- 4.8 mL。男性（n = 14）的 IMAC 体积比女性（n = 26）大 2 毫升，在骨骼 III 类中最大，在骨骼 II 类中最小（P > 0.05）。IMAC 体积与腭穹窿高度强烈相关，但与腭宽度或长度无关。因此，假设腭穹窿的高度可能会影响观察到的舌位，但不能排除舌对其周围骨骼结构的生长影响。
