Original scientific paper
Correlation between the Hinge Movement Radius and Long Axes of the Upper and Lower Incisors
Stanko Vukovojac
; School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Davor Seifert
; Dom zdravlja »Maksimir«, Zagreb, Hrvatska
Relja kepert
; Dom zdravlja »Kutina«, Kutina, Hrvatska
Abstract
In this study 50 subjects were examined. In each subject, the terminal hinge axis point was located using Lauritzen’s method. The point axis was marked on the left side o f the face by a steel pellet, 0.5 mm in diameter. Standard latero-lateral cephalogram was obtained in each and traced on a transparent foil under cephalometric
conditions. Long axes o f the first upper and lower incisors and the distance between the point axis and the uppermost point o f the occlusal rim o f the lower median incisor, were plotted on cephalogram tracings. Angles between long axes o f the incisors and the marked distance, as well as the angle between the two long axes
were measured on each cephalogram and statistically evaluated. On the basis o f these results, an incisal instrument was constructed. The incisal instrument can be used in positioning the first upper and lower incisors during tooth arrangement on dentures.
Keywords
hinge movement; incisor long axes; tooth arrangement
Hrčak ID:
99829
URI
Publication date:
15.3.1993.
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