Erasing teeth – often occurring process occurs in people of all ages. It can be both physiological and pathological phenomenon. Physiological erasure has adaptive nature, preventing the functional overload of the teeth and the resulting pathological changes in periodontal tissues. This slow-compensated current process aimed at improving the function of mastication, the creation of conditions for the slow movement of the mandible and the smooth glide of dentition in different phases of articulation. Physiological tooth abrasion is observed both in the dairy bite, and in a constant occlusion.

Pathological erasure process is rapid and accompanied by changes in dental and periodontal tissues, as well as dysfunction of the masticatory muscles and TMJ. Under pathological wipe the teeth should be understood a state of heightened erasure when, in the short term teeth lose their anatomical shape, they formed atypical pads, surrounded by sharp edges of the preserved enamel relationships in the dental series vary, bite down and tooth rows can not perceive the functional loading without further damage to the hard tissue. Etiology The causes of endogenous PS; exogenous. Endogenous factors include: a hereditary tendency, metabolic disorders, neurodystrophic and endocrine disorders that are accompanied by defective structure of enamel and dentin, gastro-intestinal tract. One reason for the development of pathological erasure is bruxism. The action of the endocrine glands on the formation, growth and calcification of tissues. Pathological abrasion observed both at high and at low thyroid function, as well as with other endocrine diseases. From exogenous causes of pathologic abrasion of teeth has the greatest value kind of bite, occupational hazards and functional overload of the teeth.