introduction: mental foramen (mf) is an important anatomic landmark in dentistry and knowledge about its variable locations (l) and type of emergence (te), has an effect on the sufficiency of local anesthesia and safety of surgical procedures. the aim of this study was to evaluate the l and te of this radiographic landmark as well as the presence of accessory mf, by means of cone-beam computed ...

The tooth root transmits and balances occlusal forces through the periodontium to the alveolar bone. The periodontium, including the gingiva, the periodontal ligament, the cementum and the partial alveolar bone, derives from the dental follicle (DF), except for the gingiva. In the early developmental stages, the DF surrounds the tooth germ as a sphere and functions to promote tooth eruption. Ho...

The foramen tympanicum is an anatomical variation that is created in the tympanic plate of temporal bone during the first year of life. The tympanic plate grows and foramen tympanicum is gradually closed by about the fifth postnatal year. However, due to a defect in normal ossification, foramen tympanicum sporadically remains throughout life. The construction of a shopping center in Tabriz, nor...

INTRODUCTION Leakage of the root canal system is an importent consideration when placing an intracanal medicament. The aim of this in vitro study was to compare the effect of calcium hydroxide and 1% chlorhexidine gel as intracanal medicaments on tooth apical seal. MATERIALS AND METHODS Seventy extracted, single-rooted maxillary anterior teeth were divided into the three experimental groups (...

The purpose of this study was to compare the apical sealing of root canals obturated with different techniques. One hundred-six human mandibular incisors were submitted to instrumentation by means of the step-back technique. After instrumentation, one hundred teeth received an impermeable coating on the external surfaces of the crown and root (except for the area nearby the apical foramen). Aft...

meningiomas are rare tumors of posterior fossa. delayed intracranial hemorrhage is a rare complication of surgeries in this territory. herein, we report a case of status epilepticus as a result of delayed motor cortex hemorrhage, complicating resection of a meningioma arising from foramen magnum.

To provide an anatomical basis for clinical implant esthetics, we evaluated the morphology of the nasopalatine canal (NPC) and analyzed labial and interproximal bone anatomy at the maxillary anterior region. We sought to investigate the effect of maxillary protrusion and tooth labiolingual inclination on labial bone anatomy in Chinese adults. Three dimensional (3D) images were reconstructed usi...