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A. Occlusal Load input (i.e. masticatory forces)

A. Occlusal Load input (i.e. masticatory forces). B. Eccentric and Extraneous load input(i.e. clenching, bruxism, extraneous loading from orthodontic treatment). Potential sites of compression. PDL. Tooth. Load distribution results in a field of compression , tension, shear. AB.

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A. Occlusal Load input (i.e. masticatory forces)

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  1. A. Occlusal Load input (i.e. masticatory forces) B. Eccentric and Extraneous load input(i.e. clenching, bruxism, extraneous loading from orthodontic treatment) Potential sites of compression PDL Tooth Load distribution results in a field of compression, tension, shear AB LB-AB D. Heterogeneity of the system is perpetuated leading to pathological however functional system Continual load input compounded by time leads to heterogeneous changes in bone Lamellar cementum (cellular) Sites of Tension C. Changes in anabolic and catabolic activity at the soft-hard tissue interfaces Sites of compression leading to resorption of bone Lamellar apposition of secondary cementum (cellular cementum) Sites of tension leading to bundle bone formation , resulting in the gradual narrowing of the PDL space

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