Introduction. Mandibular premolars have been reported with complex anatomical aberrations, making them one of the most difficult teeth to manage endodontically. Methodology. An exhaustive search was undertaken to identify associated anatomic studies of mandibular premolars through MEDLINE/PubMed database using keywords, and a systematic review of the relevant articles was performed. Chi-square ...

The simultaneous occurrence of various multiple dental anomalies has been reported previously, particularly in cases of chromosomal abnormalities that often manifest with multisystem involvement.' 2 Additionally, multiple dental anomalies have been reported in individuals and within families, without evidence of other systemic manifestations. Ekman-Westborg and Julin reported a case of macrodon...

Aim: To investigate the prevalence of eight morphological and numerical anomalies in the primary dentition of southern Chinese and to compare the prevalences with those from different ethnic groups. Materials and Methods: The material used in the study consisted of plaster casts and standardized panalipse radiographs collected from 936 randomly selected 5-year-old children (493 males and 443 fe...

It has been a challenge to establish the accurate diagnosis of developmental tooth anomalies based on periapical radiographs. Recently, three-dimensional imaging by cone beam computed tomography has provided useful information to investigate the complex anatomy of and establish the proper management for tooth anomalies. The most severe variant of dens invaginatus, known as dilated odontome, is ...

PURPOSE To assess the effectiveness of Brooks' posterior stabilisation and fusion for the unstable atlantoaxial joint due to congenital dysplastic dens and trauma. METHODS We retrospectively studied records of 54 patients (36 males and 18 females; age range, 3-58 years) who underwent Brooks' posterior stabilisation procedure between March 1975 and December 1999, at the Catholic University of ...

Dens invaginatus is a developmental anomaly that results in an enamel-lined cavity intruding into the crown or root before the mineralization phase. This report presents regenerative endodontic treatment of a necrotic immature tooth with Oehler's type III dens invaginatus of a nine-year-old female patient. A diagnosis of dens invaginatus (Oehler's type III) and a large periapical lesion was est...

Far-reaching government reforms are being implemented to overhaul France's national research organizations in the life and health sciences, but researchers are anxious about what lies ahead. Karen Dente reports.

PURPOSE To establish the mechanism of injury that causes vertical fractures of the dens. METHODS Over a 3-year period, 30 patients with dens fractures were seen at our institution. From these records, we identified and retrospectively reviewed the radiographs (n = 3), CT scans (n = 3), and MR images (n = 1) of three patients with vertical fractures of the dens to assess the characteristics of...

BACKGROUND AND PURPOSE Widening of the basion-dens interval is an important sign of cranioverterbral junction injury. The current literature on basion-dens interval in children is sparse and based on bony measurements with variable values. Our goal was to establish the normal values of a recently described new imaging parameter, the basion-cartilaginous dens interval in children. MATERIALS AN...

the dilated odontoma is an infrequent developmental alteration that appears in any area of the dental arches and can affect deciduous, permanent and supernumerary tooth. dens invaginatus is a developmental anomaly resulting from invagination of a portion of crown forming within the enamel organ during odontogenesis. the most extreme form of dens invaginatus is known as dilated odontoma. the aim...