EN
The peridontinum includes gingiva, cementum, periodontal ligament and the maxillary or mandible bone. The gingival mucous membrane forms the connective fibrous tissue. The space between the alveolar bone and cementum is filled up by the periodontal membrane. The mechanical function of the periodontal membrane consists in the fixation of the teeth in the alveolus as well as having a stimulating effect on the proper process of bone remodeling. At the moment of trauma the periodontinum can be damaged. The lesions are divided into subluxation, luxation or dental prolapse from the alveolus. The case of a German shepherd with right canine maxillary tooth luxation was described. On account of the surviving time of peridontinum cells treatment of dental luxation belongs to emergency procedures. The optimal time of intervention is 30 minutes from injury.