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The maxillary first molar has been presented as a tooth with an enormous variety of root canal system configurations. The purpose of this paper is to present two cases of maxillary first molars displaying an uncommon seven root canal system morphology. After a proper access opening of the maxillary molars undergoing...

The aim of the present study is to report a clinical case of a root canal treatment of a maxillary central incisor with two root canals. The clinical examination showed a discrete increase in the crown width of tooth 11, which responded negatively to ice sensitivity, percussion and palpation tests. The tomographic e...

The mandibular first molars may present several anatomic configurations, with the most prevalent being the presence of two roots and three root canals. Although the incidence of three root canals in the distal root is an uncommon occurrence, it must be considered. The present study reports two cases of non-surgical ...

Dens invaginatus is an uncommon occurrence in the permanent dentition. However, practitioners must be aware of this anatomical variation, as an early diagnosis may prevent the need for endodontic treatment. Clinically, root canal treatment of Oehler’s Type II dens invaginatus may present a complex challenge. T...

Objectives: To assess radiographically the technical quality of root fillings placed by undergraduate students at the Faculty of Dental Medicine of the University of Porto. Methods: The records of 318 patients were assessed, of which 225 radiographs of root canal fillings in single-rooted teeth were selected. The ra...