Panoramic radiographs of two female patients ages 22 and 21 revealed the presence of two impacted bilateral upper fourth molars and unilateral (right) upper fourth and fifth molars. All of the teeth were distomolars. The supernumerary teeth had normal tooth morphology with regard to their crowns and roots but were slightly smaller than the existing third molars. Their crowns were either two or ...

Identifying and accessing all pulp canals is particularly challenging in the endodontic treatment of teeth with atypical canal configurations. This report describes the nonsurgical endodontic treatment of a maxillary first premolar with three root canals. The prevalence of this unusual morphology is reviewed and suggestions are offered to help dentists identify and treat such teeth. This case r...

Successful endodontic management of teeth with odontogenic anamolies is quite challenging. Fusion is a condition where crowns of two individual teeth have been joined together during crown development. Though fusion occurs infrequently, it could predispose to caries and periodontal disease because of the abnormal tooth morphology. Here is a rare case of fusion of maxillary lateral incisor with ...

Fifty-three patients were examined for dental abnormalities at an institution specializing in care of the mentally deficient in Bauru, São Paulo State. The incidence of teeth with abnormal morphology, mainly second molars with an abnormal number of cusps, was extremely high. Enamel hypoplasia was frequently found in anterior teeth, and the percentage of fractured maxillary incisors was signific...

A study of 150 extracted maxillary first premolars from citizens of Seville, Andalusía, southern Spain, revealed 60 teeth with one root (40.0%), 85 teeth with two roots (56.7%) and five teeth with three roots (3.3%). The distribution of root canal shapes in the sample showed that all teeth with two or three roots had type I root canals (each canal had one apical foramen). Conversely, most of th...

an accurate diagnosis of the morphology of the root canal system is a pre-requisite for successful root canal treatment. frequently, root canals are left untreated because the clinicians fail to identify their presence, particularly in teeth that have anatomical variations or additional root canals. in this report a maxillary lateral incisor with two roots has been described.

PURPOSE To determine the bond strengths promoted by an adhesive system to human, bovine, and porcine enamel and dentin, and compare their etched micromorphology by scanning electron microscopy. MATERIALS AND METHODS Thirty sound freshly extracted teeth were used in this study: ten human third molars, ten bovine incisors, and ten porcine molars. The crowns of human (H), bovine (B), and porcine...

Objectives: The aim of this literature review was to analyze the root canal shape of human teeth described in anatomical studies as recent wide use of fiber posts resulted in a new interest for the anatomy of coronal and middle portions of the canal, where post-space should be prepared, in order to achieve the best fiber post fitting to the post-space. Material and methods Original scientific p...

The aim of this study was to investigate the morphology and localisation of calcium hydroxide- and mineral trioxide aggregate (MTA)-induced hard tissue barriers after pulpotomy in dogs' teeth. Pulpotomies were performed on maxillary and mandibular premolars of five dogs. The teeth were assigned into three groups according to the pulp-capping agent used. The pulpal wounds were capped with calciu...

tooth fusion is a developmental anomaly characterized by the :union: between the dentin and/or enamel of at least two separately developing teeth. the fusion of posterior teeth is an uncommon occurrence. in this article, we report a rare case of unilateral fusion of a mandibular second molar with a paramolar. carious exposure mandated endodontic treatment. the unusual morphology and complex roo...