Are orthodontic landmarks and variables in digital cephalometric radiography taken in fixed and natural head positions reliable?

Objective: The purpose of the study was to evaluate the reliability of the most common landmarks and variables in digital lateral cephalometric radiographies in fixed and natural head positions.

Materials And Methods: Twenty-one patients with anterior or distal displacement of the mandible treated in the Postgraduate Orthodontic Clinic of the Aristotle University of Thessaloniki had a digital lateral cephalometric radiography in fixed and in natural head position. The images where digitized.

Digital subtraction radiography of panoramic radiographs to evaluate maxillary central incisor root resorption after orthodontic treatment.

Aim: To quantitatively assess the extent of morphologic changes of the apical root area and root length of maxillary central incisors after orthodontic treatment using digital subtraction radiography (DSR) and to investigate possible contributing parameters.

Methods: The subtracted images of panoramic radiographs of 21 patients before and after orthodontic treatment were evaluated using I/RAS C and Image J software. The retrieved data were analyzed by means of SPSS statistical software, and the method's error was assessed.

Longstanding rhinolith leading to anatomical alterations of the ipsilateral inferior nasal meatus and turbinate.

Rhinoliths consist of a central nidus with calcification resulting in calcareous concretions within the nasal cavity. They are uncommon in the literature despite a propensity particularly in children to insert foreign bodies into their nose and ears. We present the case of a 62-year-old woman with a longstanding undetected rhinolith with mild uncharacteristic symptoms.