CBCT Flashcards
1
Q
what is attenuation
A
attenuation = the amount of x-ray absorbed by the object or reflected away from its primary beam
the higher the attenuation, the lesser the number of xrays reaching the receptor
2
Q
describe the different field of view size
A
small FOV - localised region approx 5cm or less
medium FOV - image one arch or both dental arches, approx 6-11cm in height
large FOV - scanned area approx 11-24cm in height
3
Q
CBCT indications
A
- implant planning
- assessment of third molars and r/s with the IAC
- evaluation of diseases of the maxilla and mandible, including cysts and tumours
- root resorption
- craniofacial evaluation
- evaluation of trauma
- TMJ eval
- endodontic eval
- eval of paranasal sinuses
- developing dentition
- restoring dentition
4
Q
what is not indicated for CBCT
A
- dental caries diagnosis
- routine periodontal assessment
- routine assessment of periapical disease
- routine assessment of root cancel anatomy
- planing the placement of temporary anchorage in orthodontics
- routine orthodontic diagnosis
