Prognosis of permanent teeth involved in jaw fractures A clinical and radiographic follow‐up study

The paper deals with the prognosis of teeth positioned in fracture lines. The clinical and radiographic findings are based on 68 patients with 84 fractures involving 110 permanent teeth. The observation period varies from 1 to 7 years. By means of a multivariate analysis it has been found that pulp necrosis was present in 25% of the involved teeth and was significantly related to the course of the fracture line in regard to the apical area and the time interval from injury to permanent fixation. Loss of marginal bone support was registered in 12 % of the involved teeth and found significantly related to tooth location and to dislocation of fragments after reduction. Pulp obliteration was recorded in only 5 % of the involved teeth. Root resorption was not found at follow‐up.