Cone Beam Computed Tomography Clinical Trial
Official title:
Accuracy of Linear Measurements of Ultra-low Dose Cone Beam Computed Tomography and Digital Panoramic Radiography Performed on Mandibular Anaesthetic Landmarks Versus Real Mandibular Measurements
measurements performed directly on dry mandibles will be compared with measurements obtained from CBCT( ultra-low dose) scans and Digital panoramic radiography.
Mandibular anaesthetic landmarks will be identified on each dry mandible and will be marked
using gutta percha.
The ten human dry mandibles will be submitted for:
1. Digital Panoramic Radiography. Panoramic radiographs will be obtained using the SOREDEX
CRANEX™ 3Dx unit. The exposure parameters will be 8Ma, 63kVp and 16.4 sec exposure time.
2. Cone Beam Computed Tomography (CBCT). SOREDEX CRANEX™ 3Dx unit will be used in this
study. Images will be acquired at a single rotation. SOREDEX® MiniDose parameters will
be used. The exposure parameters will be 3.2 Ma, 90kVp and 2.3 sec exposure time to take
the advantage of 3D data in dose sensitive cases like children, or reduce the radiation
dose for the patient.
The real linear measurements will be measured in millimeter on dry mandibles using digital
caliper and will be compared with measurements obtained from both techniques.
Images will be evaluated by two experienced radiologists of ten years of experience. Each one
will evaluate the images separately twice with a period of two weeks in-between the two
reading sessions. The researcher will measure out the real linear measurements on the dry
mandibles using digital caliper.
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