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In this study, we describe the finite element model analysis of novel pinion gears having a curvilinear teeth profile which were previously manufactured by us for the first time with the highest accuracy. Herringbone and spur gears were also modeled by using the same approach in order to compare the advantages of each, both under actual-working- and stress-conditions. Additionally, these three gear types were compared through noise analysis for the first time as well. All these analyses suggest that the concave–convex type gears display superiority in load resistance and show reasonably low levels of noise.