[Clinical and radiological quality assessment of root canal treatment]

The aim of the study was to assess the quality of endodontic therapy and estimate further treatment needs. Nine hundreds orthopantomograms of 442 men and 458 women (aged 18-70) without any clinical manifestations of endodontic pathology were examined. In 1170 patients (41%) additional intraoral radiographs were taken to assess the periapical status. 2852 (13.8%) of the 20 724 teeth examined had periapical lesions and/or root fillings. 2503 of the 2853 teeth were endodontically treated, only 1011 of them (40.4%) having all their root canals obturated. 612 (41.3%) of the 1492 (59.6%) teeth with inadequate root canal fillings had no signs of apical periodontal lesions. Of the 1229 teeth needing a root canal treatment 349 required primary treatment, 880 required retreatment.