The traumatic bone cyst, an uncommon lesion of the jaws, belongs to the category of 'pseudocyst' owing to its lack of a lining epithelial membrane. It is an asymptomatic lesion, which is often diagnosed accidentally during routine radiological examination commonly present in the posterior mandible as a unilocular radiolucency with scalloping borders. The exact etiopathogenesis of the lesion is still debated, though the role of trauma is often associated. Here we report a rare case of traumatic bone cyst in the anterior mandible, in a 16-year-old female patient with a previous history of trauma to chin; diagnosed and treated successfully in our surgical unit. The case is discussed in relation to its clinical presentation, etiopathogenesis, diagnosis, management and prognosis.

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The unique morphology of dilacerated and S-shaped root canals often pose utmost challenges in their endodontic management. Common causes of failures in such cases are primarily related to procedural errors such as ledges, fractured instruments, canal blockages, zip and elbow creations. Knowledge of dental anatomy and its variations is essential for the success of endodontic treatment. A clinician is required to have an insight of the morphology of tooth related to its shape, form and structure before commencing treatment. Routine periapical radiographs aids in assessing these morphological variations in the root canal system. This article gives a review of the literature and reports an interesting case of dilacerated and S-shaped root canals of adjacent teeth in the same patient.

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Introduction:The newer preventive approach to caries has resulted in the increased use of remineralizing agents. The remineralizing ability of green tea and black tea is under research. Materials and methods:Two hundred premolar teeth were collected and a buccal window was exposed on the tooth sample by coating the rest of the teeth with nail varnish. The samples were artificially demineralized using Featherstone pH cycling technique. The test solutions of green tea and black tea were prepared by dissolving 2 gm of the prepared extract in 180 mL of water; 0.05% NaF solution was prepared by dissolving 5 gm of NaF in 1 L of distilled water. A total of 50 samples each were treated with the four test solutions, green tea, black tea, NaF and distilled water (control) for 4 minutes per day for 1 week. The samples were excited using diode laser and the fluorescence spectra were measured using laser-induced fluorescence spectroscopy. Results:The highest remineralization was shown by samples treated with green tea, followed by NaF. Black tea showed lower remineralization than both green tea and NaF and the least remineralization was shown by the control, distilled water. The difference in remineralization shown by the test solutions was statistically significant except for the difference between black tea and distilled water. Conclusion:All the three test groups, green tea, black tea, and NaF, showed remineralization. Green tea induced the highest remineralization in the tooth samples, followed by NaF. Black tea produced the least amount of remineralization. Green tea may have a potential role as a remineralizing agent for daily intake.