Diagnosis, Evaluation, and Endodontic Management of Rare Four-Rooted Mandibular Second Molar Using CBCT.

When endodontically diagnosing and evaluating the morphology and anatomy of roots and root canals, especially in multirooted teeth, clinicians must exercise extremely keen vision and give careful attention to minute details. Fundamental knowledge of the most common anatomic characteristics and the possible variations of these characteristics is necessary to provide successful endodontic therapy. While all mandibular molars have significant variations in roots and root canal configuration, mandibular second molars perhaps present the biggest challenge.

Endodontic management of a maxillary first molar with three roots and seven root canals with the aid of cone-beam computed tomography.

Variation in root canal morphology, especially in maxillary first molar presents a constant challenge for a clinician in their detection and management. This case report describes the successful root canal treatment of a three rooted right maxillary first molar presenting with three canals each in the mesiobuccal and distobuccal roots and one canal in the palatal root. The clinical detection of this morphologic aberration was made using a dental operating microscope, and the canal configuration was established after correlating and computing the clinical, radiographic and cone-beam computed tomography (CBCT) scan findings.

Asymmetry in mesial root number and morphology in mandibular second molars: a case report.

Ambiguity in the root morphology of the mandibular second molars is quite common. The most common root canal configuration is 2 roots and 3 canals, nonetheless other possibilities may still exist. The presence of accessory roots is an interesting example of anatomic root variation.

Langerhans cells and their role in oral mucosal diseases.

Dendritic cells are arguably the most potent antigen-presenting cells and may be the only cells capable of initiating the adaptive immune response. The epithelial residents of dendritic cells are Langerhans cells, which serve as the "sentinels" of the mucosa, altering the immune system not only to pathogen entry but also of tolerance to self antigen and commensal microbes. Oral mucosal Langerhans cells are capable of engaging and internalizing a wide variety of pathogens and have been found responsive to nickel in patients with nickel allergies, oral Candida species, oral lichen planus, lichenoid drug eruptions, graft versus host diseases, periodontal diseases median rhomboid glossitis, human immunodeficiency virus infection, hairy leukoplakia of the tongue, and oral squamous cell carcinoma.

Bilateral supplemental maxillary central incisors: a case report.

Hyperdontia is a developmental anomaly that is hypothesized to arise from multiple causes. Supernumerary teeth may remain embedded in the alveolar bone or can erupt into the oral cavity. When such teeth remain embedded, they may cause disturbances to developing teeth.