Jonke Erwin, Schaefer Katrin, Freudenthaler Josef W, Prossinger Hermann, Bookstein Fred L
Vienna University Clinic of Dentistry, Department of Orthodontics, Vienna, Austria.
Coll Antropol. 2003 Dec;27(2):789-801.
The aim of this study was to evaluate secular trends by means of orthodontic measurements on lateral cephalograms. We use roentgenograms from three populations: 22 Bronze Age skulls from a cemetery near Hainburg/Austria, 140 soldiers who served in the Hapsburg Imperial Army in the late 19th century, and 154 contemporary recruits of the Austrian Federal Army. Using conventional morphometric analysis, no statistically significant differences could be established. But applying geometric morphometrics to the 2D-coordinates of the pentagon composed of the landmarks Sella, Nasion, Articulare, Gonion and Menton, some biologically interpretable differences were detected, the size allometry between the 19th- and 20th-century populations being the only notable one. We conclude that landmarks should be digitized directly (and many more of them) and that conventional methods used in clinical orthodontics are inappropriate for addressing the scientific questions approached here.
本研究的目的是通过对头颅侧位片进行正畸测量来评估长期趋势。我们使用了来自三个群体的X线片：奥地利海恩堡附近一座墓地出土的22个青铜时代头骨、19世纪末在哈布斯堡帝国军队服役的140名士兵，以及奥地利联邦军队的154名当代新兵。使用传统形态计量学分析，未发现统计学上的显著差异。但将几何形态计量学应用于由蝶鞍、鼻根点、关节点、下颌角点和颏下点组成的五边形的二维坐标时，检测到了一些具有生物学意义的差异，19世纪和20世纪人群之间的大小异速生长是唯一显著的差异。我们得出结论，应该直接对头影测量标志点进行数字化（并且要更多的标志点），并且临床正畸学中使用的传统方法不适用于解决这里提出的科学问题。
