Helfgen E H, Luckerath W, Gruner M, Baumhof R
Zentrums für Zahn-, Mund- und Kieferheilkunde der Universität Bonn.
Dtsch Zahnarztl Z. 1990 Jul;45(7 Spec No):S29-32.
The occlusal surface of the posterior teeth of 20 subjects with class-I-occlusion were analysed by means of an electronic profilograph in laterotrusion. Each of the curvatures recorded was defined by an approximated radius as well as its angle to the occlusal plane. The software used was specifically developed to suit this particular purpose. The data showed characteristic regularities. The results indicate that the average radius of the canine is longer than that of the molars. An alternating increasing and decreasing tendency of the angles to the occlusal plane was observed. The results suggest that the concept of canine-protected occlusion may be strengthened by the fact that there is a genetic determination of the canine dominance.
采用电子轮廓仪对20名I类咬合受试者后牙的牙合面进行侧方运动分析。记录的每个曲率由近似半径及其与牙合平面的角度定义。所使用的软件是专门为满足这一特定目的而开发的。数据显示出特征性规律。结果表明，尖牙的平均半径比磨牙长。观察到与牙合平面的角度呈交替增加和减少的趋势。结果表明，尖牙主导存在遗传决定性这一事实可能会强化尖牙保护咬合的概念。
