Abstract
A distinctive feature of the enamel surface of molars and premolars is the presence of a certain number of fissures - wedge-shaped (V-shaped) notches, the tops of which are natural stress concentrators in the enamel of the tooth crown. To determine the degree of concentration of mechanical stresses in the vicinity of the fissure tip, the problem of the stress-strain state of enamelin the form of an elastic wedge imitating a fissure is considered. The bite force, acting on the food, wedges the fissure and causes a stress-strain state in the vicinity of its tip. The resulting formulas made it possible to estimate the stress-strain state in the vicinity of the fissure tip depending on the fissure opening angle, food diameter, and relative deformation of the lateral surface of the fissure.
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