A method for cantilever dental bridge material selection based on mastication loads is proposed in the paper. The personalized cantilever dental bridge model was developed. Equivalent von Mises stresses investigated numerically in case of solid food segments mastication that concentrated in pontic and cantilever teeth fissures. It was shown that penetration of solid food (carrot, nut, biscuit) into cantilever tooth fissure may cause values of stresses higher than critical stresses of dental materials used. In contrast, stresses caused by penetration of food into pontic tooth fissure are not so high and proper selection of dental material may provide for required safety factor.

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The model of gear pair for three dimension nonlinear transient analysis is proposed in the article. The model of gear pair is capable of representing a wide spectra of gear types used in industry. Variable gear mesh stiffness, gear mesh damping, transmission errors and backlash are introduced in the model.

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