Oral Health Group

The Use of Cone Beam Computed Tomography for the Evaluation of Pathology, Developmental Anomalies and Traumatic Injuries Relevant to Orthodontics


February 24, 2011
by ken

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Byung-Cheol Kanga, Suk-Ja Yoonb, Jae-Seo Leec, Wisam Al-Rawid, J. Martin Palomoe

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http://www.youtube.com/watch?v=hTf9ph3Gsjk

The
objective of this work is to illustrate pathologic conditions relevant
to orthodontists who use dental cone beam computed tomography (CBCT)
images. A total of 1703 cases from 2300 CBCT images taken from June 2006
to May 2009 were reviewed, and interesting cases that might be related
to orthodontic treatment or evaluation were selected. A total of 427
cases were selected. The conditions included supernumerary tooth (84
cases), missing tooth (29 cases), impacted tooth (35 cases of impacted
canine), external root resorption (7 cases),root fracture (18 cases),simple bone cyst (13 cases), dentigerous cyst (58 cases), abscess (33
cases), osteomyelitis (51 cases), odontoma (8 cases), mucus retention
cyst (20 cases), temporomandibular joints (70 cases), and cleft palate
(11 cases), including surgical correction with/without bone grafting,
cortical bone width (buccal and lingual cortical bone around the roots),
impacted tooth and tooth-button-traction, surgical positioning of
orthodontic mini-implants for anchorage and others. The conditions
presented here are common on 2-dimensional radiographic images but may
not look familiar with computed tomography images. The CBCT images with
3-dimensional capabilities provided fine details of the dental
conditions and allowed fine bony changes to be detected from different
viewing angles.

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