Volume : IV, Issue : XI, November - 2014

The Curve of Spee–A Diagnostic Tool

Dr. Prasad Chitra, Dr. Yashpal

Abstract :

Introduction: F Graf Von Spee, who used skulls with aaded teeth to define a line of occlusion, first described the Curve of Spee in 1890. The functional significance of the curvature has not been completely understood. However, it has been suggested that the Curve of Spee has a biomechanical function during food processing by increasing the crush–shear ratio between the posterior teeth and the efficiency of occlusal forces during mastication. Aim of the study: To analyse a possible co–relation between different depths of Curve of Spee with the position and inclination of the upper and lower incisors, overjet, overbite, lower arch crowding and growth pattern. Material and methods: Lateral head films and dental casts of 60 untreated adolescent subjects, 30 female and 30 male, aged between 13 to 17 years, were obtained. The subjects were divided into three groups with normal Curve of Spee, flat Curve of Spee, and deep Curve of Spee. Comparisons between the three groups were made. Casts were photographed using a 1100D DSLR Canon camera with a 100mm f2.8, 1:1macro lens. The depth of the curve was measured with help of Adobe Photoshop CS5 software. Results and conclusion: Data was analyzed, using Statistical Package program SPSS Version 10.0 (SPSS Inc., Chicago, III). Descriptive statistics, including the mean and standard deviation (SD) values were calculated for all variables in each Spee group. The results of the Least Significant Difference Test, showed significant differences of overjet between the normal and flat Curve of Spee groups and between the flat and deep Curve of Spee groups. However, overbite demonstrated significant differences between the normal and deep Curve of Spee groups and between the flat and deep Curve of Spee groups. Y– axis demonstrated significant differences between all three groups.

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Dr. Prasad Chitra, Dr. Yashpal The Curve of Spee- A Diagnostic Tool Indian Journal of Applied Research, Vol.4, Issue : 11 November 2014

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