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BACKGROUND With the increasing use of computed tomography (CT) in oral diagnosis and treatment planning, concern has been expressed about the high levels of radiation used, and the associated risks. OBJECTIVES The purpose of this study was to compare the radiation doses of facial CT scans with the radiation doses taking a lateral cephalometric radiograph,(More)
The accuracy of measurement of tooth length and angulation on dental panoramic tomograms (DPTs) is thought to be highly dependent on head positioning technique. A model representing the dentition and the functional occlusal plane was designed using an acrylic framework and stainless steel wires. The aim was to investigate whether varying the position of the(More)
INTRODUCTION A new nonradiographic craniofacial imaging technique is described and evaluated. The Sydney diagnostic system (SDS) image is formed from a standardized lateral head digital photograph and a standardized digital photograph of the study models. The SDS image was designed for orthodontic diagnosis and treatment planning without a lateral(More)
AIM A cephalometric analysis was designed to determine whether the external ear is a suitable reference structure for the superimposition of cephalometric analysis. METHODS The sample consisted of 21 orthodontic patients with an average age of 16.5 years. Tracings of pretreatment and posttreatment cephalograms were superimposed on the cranial base. The(More)
The advantages of indirect bonding have been recognised for more than twenty years. However the technique has not gained widespread acceptance as an alternative to conventional direct bonding. Reports of difficulty in achieving adequate isolation of posterior teeth and problems with resin flash and low bond strength may explain the reluctance of the(More)
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