The third dimension of dentistry: Cone beam computed tomography - Its applications

Abstract

Rapidly evolving advances in oral healthcare in the last 10 years has increased the need for various novel diagnostic imaging modalities that aid in formulating the early accurate diagnosis, and therefore, plan the treatment with the best prognostic value that is achievable. Cone beam computed tomography (CBCT) is a radiographic imaging technique that yields precise three-dimensional images of the maxillofacial region. For more than a decade now CBCT has been used for dental and maxillofacial imaging and its availability and use are increasing continuously. This has necessitated a review of the various application of CBCT in dentistry.

Comparison of the accuracy of full head cone beam CT images obtained using a large field of view and stitched images

“…Large FOV units are 15-23 cm in size and are used to diagnose maxillofacial trauma, orthodontic analysis, temporomandibular joint analysis, and various jaw pathologies. 6 CBCT systems in dental clinics have a limited FOV, which is too small to obtain an image of the entire craniomaxillofacial area. However, large FOV CBCT images are needed for 3D evaluation for orthodontic and orthognathic surgery planning.…”

“…However, large FOV CBCT images are needed for 3D evaluation for orthodontic and orthognathic surgery planning. 6 To achieve this, it is necessary to enlarge the FOV area of CBCT devices, so a larger detector is needed. However, a large detector is thought to increase radiation exposure, reduce detail, and increase the cost of the device.…”