title: [Comparative studies on the morphology of the curvature of the protrusive paths in anterior and posterior teeth].
abstract: The occlusal surfaces of 20 class I probands were recorded during protrusion with an electronic profilograph. Using a circular template, a definite radius could be attributed to each of the recorded curvatures. The radii and angles determined relative to the occlusal plane showed characteristic regularities. Thus, the radii of the anterior teeth are longer than those of the posterior teeth. The longest radius was generally found for the canines. The same tendency, although less pronounced, was observed with the angles. These phenomena can be explained by the fact that the masticatory system involves both "biting" and "grinding". Evolutionary and embryological theories have also been included in the discussion.
authors.forename: E H
authors.initials: EH
authors.lastname: Helfgen
authors.forename: W
authors.initials: W
authors.lastname: Lückerath
authors.forename: M
authors.initials: M
authors.lastname: Grüner
mesh_terms: D003766:Dental Occlusion; D005260:Female; D006801:Humans; D008297:Male; D009811:Odontometry / Q000379:methods*; D014070:Tooth / Q000033:anatomy & histology*
vernacular_title: Untersuchungen zur Krümmungsmorphologie der Protrusionsbahnen.