[Dynamic method for measuring the periodontal area]

The study was carried out on 21 teeth before and after their removal in 9 patients. Mechanical parameters of the dental supporting-retaining system were studied with a two-parametrical periodontometer, which evaluates the tooth mobility and angle of losses, characterizing the internal friction in the tooth-periodontium-bone system. The in vitro area of the periodontium was evaluated using millimeter paper. A direct relationship between the angle of losses and periodontal area was revealed. The authors suggest using a coefficient of propotionateness between the periodontal area and angle of losses; this coefficient does not depend on the tooth mobility and periodontal area.