Effect of Surgical Mandibular Setback by Sagittal Split Ramus Osteotomy on Lower Pharyngeal Airway

Treatment of dentofacial deformities with jaw osteotomies has an effect on airway anatomy, therefore mandibular setback surgery has potential to diminish airway size. The aim of this study was evaluation the effect of mandibular setback surgery by bilateral sagittal split ramus osteotomy (BSSRO) on lower pharyngeal airway size in anteroposterior direction retrolingually and hyoid bone position.

Evaluation the Stability of the Medial end of the Third Palatal Ruga as a Landmark in Maxilla in Extraction Cases, and the Possibility of Using it in Mandible

Cephalometric superimpositions are the most commonly means used to assess the orthodontic teeth movement – especially- in cases of extraction - with their attendant risks and difficulty, therefore dental casts were an alternative way for serial assessment. So the aim was to evaluate the stability of the medial end of the third palatal ruga as a landmark in maxilla in extraction cases, and the possibility of using it in the mandible.

Reliability of Periapical Photographs in the Evaluation of Root Shortening During Orthodontic Intrusion

Apical root resorption is a common adverse effect during orthodontic treatment, specially the intrusion forces. Apical photographs by using the parallel technique and with the help of some formulas were the most common approaches to investigate the root resorption. The aim of this study was to study the reliability of periapical photographs in evaluating of root length shortening during orthodontic intrusion forces, by comparing with that diagnosed by using the CT-scan images.