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Year : 2009  |  Volume : 9  |  Issue : 4  |  Page : 180-185

Mandibular finite helical axis pathway

Department of Prosthodontics, V. S. Dental College, Bangalore, India

Correspondence Address:
Shilpa Shetty
664, 17th D main, 6th Block, Koramangala, Bangalore
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Source of Support: None, Conflict of Interest: None

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Condylar and incisor trajectories are often used for the study of mandibular movements. Condylar trajectories, however, depend on the location of the reference point and can be interpreted erroneousiy. In contrast, the helical axis analysis yields an unequivocal description of rigid body kinematics. The finite helical axis (FHA) is a mathematical model which can be used to describe comprehensively the movements of the rigid body.an optoelectronic jaw tracking system, JAWS 3D, was usedfor this purpose The finite helical axis were never localized within the condyle and often were located outside the mandible. The analysis of the FHA pathways yields more information on whole mandibular movements than simply the movements of a single condylar point.

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