DISEASES OF THE TEETH AND ALVEOLAR PROCESS : DENTAL EROSION (ABRASIO DENTIUM) - etiology, pathogenesis, symptoms and course of, recognition, prediction and prevention
Etiology. Physiological Erasure contiguous surfaces can become pathological in the loss of posterior teeth or a direct bite. The cause of dental abrasion can be spasmodic contraction of chewing muscles, the teeth grinding at night, worm intoxication.
The pathogenesis. Erasing mainly as the process develops premature wear of dental hard tissues - enamel and dentin. But note also the lack of stability of these tissues due to imperfect calcification.
Symptoms. In the external examination is set to the shortening of the crowns of the teeth due to the soshlifovyvaniye Bugrov, cutting edges.
Course and complications. Erasing develops gradually. Pulp cavity usually not be opened, because the deposition of secondary dentin. The main complication is the development of a declining occlusion with subsequent loss of normal chewing function. Sometimes there are painful hyperesthesia.
Recognition is based on the existence of objective evidence of a reduction in the height of the tooth crowns.
Prediction in the presence of rapidly decreasing occlusion adverse.
Maintaining the normal height of the crowns of the posterior teeth, especially the first big molar teeth ("keys articulation"), is crucial in the prevention of pathological dental abrasion.
The restoration of proper relationships of the dentition with the help of prostheses. Deformation of the maxillo-temporal joint, significant displacement of the teeth often limit the capacity and effectiveness of treatment, especially in the elderly.