Case challenge: the case of the missing root tip.

A 43-year old female had her left maxillary first molar removed by her dentist. Upon examining the tooth following the extraction, he discovered the distobuccal root was fractured. Inspection of the extraction site revealed the missing root remained in its alveolus.

Case challenge. Chronic maxillary inflammation.

A 30-year old male was referred by a dental practitioner to the Department of Oral Radiology at the University of Lund, Sweden, for a radiological evaluation of chronic symptoms of inflammation on the right side of the maxilla. According to the patient, at age 12 he had surgery to remove a non-erupted maxillary right second premolar. Postoperatively, a draining sinus tract appeared on the buccal aspect of the alveolar process.

Ossification of the human stylohyoid ligament: a longitudinal study.

We report the results of a longitudinal radiographic study of ossification of the stylohyoid ligament in a sample of patients treated for minor malocclusions. The results suggest that the vast majority of ossified sites in the stylohyoid ligaments are established during childhood and adolescence. The mean length of the sites shows a fairly rapid, linear increase with age until the end of adolescence; any further increase is nonlinear and occurs at a much slower rate.

Imaging of the temporomandibular joint: a position paper of the American Academy of Oral and Maxillofacial Radiology.

Various imaging techniques for the temporomandibular joint are discussed with respect to uses, strengths, and limitations. An imaging protocol is outlined for evaluating patients with a wide variety of temporomandibular joint related signs and symptoms.

Detection of small differences in mass using a direct digital dental X-ray system.

Objectives: To evaluate experimentally how in direct digital radiography heterogenous detector response may influence the depiction of small mass differences.

Methods: A step wedge of a bone-simulating resin was imaged at 70 kVp using RadioVisioGraphy ZHR 32000. Exposure time and step wedge position on the detector varied.