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A new biomechanical three-dimensional (3D) model for the human mandible is proposed. A simple two-dimensional model cannot explain the biomechanics of the human mandible, where muscular forces through occlusion and condylar surfaces are in a state of dynamical 3D equilibrium. All forces are resolved into components according to a selected coordinate system.(More)
The objective of this study was to measure and compare hand pinch grip forces in standing and sitting postures for a group of 77 healthy female dentists of 25 to 55 years old. The equipment used consisted of a gripping device with strain gauges, a measuring device and a printer. The results can be described as follows. With respect to absolute values the(More)
Hand pinch grips in the standing and sitting positions on a group of 46 healthy males of 20 to 26 years old were measured. The results were as follows: 1. Hand pinch grip forces are higher when the subject is standing than when he is sitting. 2. Hand pinch grip forces, depending on the position of the arm in the working space, are higher when the arm is(More)
− Whiplash injuries which occur mainly in rear end collision are the most frequent injuries reported in traffic accidents. In the available literature there are various approaches to solving and explaining whiplash movement of head and neck. The M.D.Freeman et al. mention a number of more than 10000 works related generally to phenomenon of whiplash movement(More)
The purpose of the study was to find evidence of how different types of food consistency affect chewing motions, especially the forward, downward and sidewise extents of motion of the lower jaw. Nineteen individuals with intact tooth sequence, aged from 20 to 37 years, were asked to chew three types of food of different consistency (banana, bread, carrot).(More)
The reasons are discussed for differences in functional results of the pelvic osteotomy after Chiari, regardless of the fact that the CE and AC angles were equal in all patients. When lateralization and distal displacement of the greater trochanter were performed in addition to the pelvic osteotomy, the functional results proved to be better. Biomechanical(More)
Dimensions of certain parts of the orofacial skeleton and vomer were obtained by a bioanthropologic measurement for which native preparations of whole and parasagitally sawed up skulls were used. The application of a harmonic frame of the skull and the main dimensions of the vomer allowed the construction of an ideal model of the vomer using Araldit B. The(More)