Type de document : Référentiel


Résumé de document :
Application Name Cone beam computer tomography (CBCT) for dental/craniofacial imaging
Description of Medical Service CBCT is a method to acquire three dimensional images through the use of a rotating gantry to which an x-ray source and detector are fixed. In contrast to the fan shaped beams and multiple detectors used in multi-slice computer tomography (CT), CBCT uses a cone-shaped x-ray beam with a flat panel detector to acquire images with a 3D volumetric data set. Hard structures such as teeth, jaws and skull are visualised well by CBCT due to isotropic and high spatial resolution. Some CBCT machines also allow the size of the irradiated area to be reduced through collimation of the primary x-ray beam thereby minimising the radiation dose to the patient.
Description of Medical Condition CBCT is used for dental implant planning (including management of suspected complications). Dental implant treatment commonly involves two stages; dental implant surgery and restorative procedures. However depending on the clinical indication, these procedures may be performed in a single stage, with the provision of a temporary crown initially and a permanent prosthesis upon satisfactory bone healing and osseo-integration of the implant.


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