[Studies on the incidence and quality of root fillings. Evaluation by orthopantomograms]

Incidence, distribution and quality of endodontic treatment were investigated using panoramic radiographs of 200 patients of the Department of Periodontology. The results were compared to those of similar epidemiological investigations published in the recent literature. 3.2% of all teeth showed to be root-canal-fillings, which is less than in any other investigation. 87% of all root-canal-fillings ended more than 2 mm from the apex and more than 60% exhibited insufficient obturation. Periapical lesions were detected in 60% of all root-canal-fillings teeth.