title: Long-term prognosis of traumatized permanent anterior teeth showing calcifying processes in the pulp cavity.
abstract: 122 traumatized teeth with radiographic evidence of abnormal hard tissue formation in the pulp cavity were examined 10-23 years (mean 16 years) after the time of injury. Judged radiographically, partial obliteration (pulp chamber not discernible, root canal markedly narrowed but clearly visible) had occurred in 44 teeth (36%). Normal periradicular conditions were found in all teeth with partial obliteration. Seventy-eight teeth (64%) were recorded as totally obliterated. Pathologic periradicular changes indicating pulp necrosis as a sequel to the total obliteration was observed in 16 teeth (21%). The late development of pulp necrosis was significantly related to teeth classified as severely injured, and to teeth with complete root formation at the time of injury. Furthermore, a comparatively rapid progress of the calcifying process appeared to be correlated with periradicular radiolucency.
mesh_terms: D003784:Dental Pulp Calcification / Q000000981:diagnostic imaging / Q000209:etiology*; D005500:Follow-Up Studies; D006801:Humans; D009336:Necrosis; D011379:Prognosis; D011859:Radiography; D013997:Time Factors; D014084:Tooth Avulsion / Q000150:complications* / Q000000981:diagnostic imaging; D014082:Tooth Fractures / Q000150:complications* / Q000000981:diagnostic imaging