Martina Roberto, Farella Mauro, Tagliaferri Renato, Michelotti Ambrosina, Quaremba Giuseppe, van Eijden Theo M G J
University of Naples Federico II, Dental and Maxillo Facial Sciences, Naples, Italy.
Angle Orthod. 2005 Nov;75(6):974-9. doi: 10.1043/0003-3219(2005)75[974:TRBMDA]2.0.CO;2.
Excessive vertical growth of the posterior dentoalveolar region has been implicated in the etiology of the so-called long-face syndrome. In this study, we tested the hypothesis that molar dentoalveolar heights are positively related to vertical craniofacial features. Cephalometric measurements obtained from 82 adult subjects were entered as independent variables in a multiple regression model. Maxillary and mandibular molar dentoalveolar heights were entered as dependent variables. Approximately 70% of the total variance was explained by anterior lower facial height (ANS-Me) and the mandibular palatal plane angle (PP-MP). Increases of ANS-Me and PP-MP had opposite effects on the amount of molar dentoalveolar heights. The lowest values of molar dentoalveolar heights were found in subjects with a small ANS-Me distance but with a wide PP-MP angle. The findings suggest that individuals with a marked divergence of the jaws may also have a reduced molar dentoalveolar vertical development.
后牙牙槽区域的过度垂直生长被认为与所谓的长脸综合征的病因有关。在本研究中，我们检验了磨牙牙槽高度与垂直颅面特征呈正相关的假设。从82名成年受试者获得的头影测量数据作为自变量输入多元回归模型。上颌和下颌磨牙牙槽高度作为因变量输入。约70%的总方差可由前下面部高度（ANS-Me）和下颌腭平面角（PP-MP）解释。ANS-Me和PP-MP的增加对磨牙牙槽高度的影响相反。在ANS-Me距离小但PP-MP角宽的受试者中发现磨牙牙槽高度的最低值。研究结果表明，颌骨明显分开的个体可能也有磨牙牙槽垂直发育减少的情况。
