[Frequency and pathogenesis of local periodontal recessions].

Localized periodontal recession (LPR) are not rarely in adults: 39.4% in the age of 20-24 years, 44.3% in the age of 35-44 years. It seems to occur a relative increasing number mainly in the age group of 20-24 years: 44.4%. Patients decreased with LPR show in comparison to healthy people a smaller diameter of the canin's apical basis both in upper and lower jaw, a smaller circumference of the alveolar crest as well as an upper canin-crown which is turned out from the teeth arcus in a more labial direction. The chronic trauma of teeth brushing is very important in the pathogenesis of the LPR. Prevention of LPR involves individual oral health education to protect the vestibular gingiva from chronic brushing-trauma.