OBJECTIVE To estimate the incidence and to describe the clinical results of the nonoperative management of vertical C2 body fractures. METHODS An 8-year retrospective review of upper cervical spine injuries from the registry of a level I trauma center identified 21 patients with a vertical C2 body fracture. RESULTS Sixteen coronally oriented Type 1 vertical C2 body fractures and 5 sagittall...

Root fracture is defined as a fracture involving the dentin, cementum, and pulp. Most fractures occur in the maxillary anterior teeth between the ages of 11 and 20 years old. The treatment for root fracture in permanent teeth involves the reduction and fixation of the displaced coronal segment. When signs of pulp necrosis or inflammatory root resorption are present, root canal therapy should be...

Based on the premise that large-scale failure of sea ice is governed by fracture mechanics, recently validated by Dempsey’s in situ tests of fracture specimens of a record-breaking size, this two-part study applies fracture mechanics and asymptotic approach to obtain approximate explicit formulas for the size effect in two fundamental problems. In the present Part I, the load capacity of a floa...

root fractures are defined as fractures involving dentine, cementum, and pulpal and supportive tissues. they comprise about 0.5–7% of all dental injuries. horizontal root fractures are commonly observed in the maxillary anterior region and 75% of these fractures occur in the maxillary central incisors. case report: this case report is about a 26-year-old male referred to the endodontic departme...

background and aims. it is important to evaluate the effects of endodontic materials on tooth structures to avoid endodontic treatment failure. the aim of the present study was to investigate the effect of mineral trioxide aggregates (mta) and portland cement (pc) on fracture resistance of dentin. materials and methods. thirty-six freshly extracted human single-rooted premolar teeth were select...