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  • Title: Correlation between inclination of occlusal plane and masticatory movement.
    Author: Ogawa T, Koyano K, Suetsugu T.
    Journal: J Dent; 1998 Mar; 26(2):105-12. PubMed ID: 9540306.
    Abstract:
    OBJECTIVES: The purpose of this study was to investigate the relationship between the inclination of the occlusal plane and masticatory movement. METHODS: Masticatory movements of 41 young adults were measured using the three-dimensional Mandibular Movement Analyzing System. The inclination of the occlusal plane was measured in the sagittal plane using a three-dimensional digitizer. RESULTS: In the sagittal plane, the masticatory closing path and the occlusal plane were consistent in maintaining a perpendicular relation with each other regardless of the inter-individual variation of the inclination of the occlusal plane. Subjects with an anteriorly inclined occlusal plane showed a vertical closing path, and subjects with a posteriorly inclined occlusal plane showed a flat closing path in the frontal plane. These characteristics were explained by the variation of the timing on the balancing-side condylar return correlated with the inclination of the occlusal plane. CONCLUSIONS: There is a significant correlation between the inclination of the occlusal plane and the direction of the closing path during mastication.
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