Root fractures due to corrosion Diagnostic aspects

Abstract

Abstract— A series of 468 teeth with root fractures, mainly caused by corrosion of root canal pins and/or posts, was evaluated to determine the clinical and radiographic criteria which may be used in diagnosing these fractures. The fractures could be seen directly in a radiograph in only one‐third of the cases. Indirectly, evidence of a fracture could be demonstrated radiographically by the presence of corrosion products from the pin or post or by dissolution of the pin in 71.8 % of the cases. Marginal pocket formation, a widening, or blurring of the periodontal space was observed in 79.8% of the cases. In 53.8 % an apical radiolucency was present, whereas 10 cases (2.7 %) showed no radio‐graphic signs. The findings emphasize the importance of always considering the possibility of a root fracture when dealing with teeth containing pins, posts, and crowns.