The purpose of this study was to determine the location, nature,
and occurrence of incidental maxillofacial findings on
cone beam computed tomography (CBCT) scans performed
for maxillofacial diagnostic purposes.
MATERIALS AND METHODS
CBCT images of 207 consecutive patients (129 females and
78 males) were examined. The sample consisted of 85 temporomandibular
joint (TMJ) disorder patients, 45 paranasal
sinusitis patients, 30 obstructive sleep apnea syndrome patients,
15 implant patients, and 32 others.
The overall rate of incidental findings was 92.8%. The highest
rate of incidental findings was in the airway area (51.8%),
followed by impacted teeth (21.7%), TMJ findings (11.1%),
endodontic lesions (4.3%), condensing osteitis (1%), and others
(2.9%). The airway incidental findings included mucosal
thickening (21.3%), deviation of the nasal septum (12.6%),
conchal hypertrophy (11.1%), bullous concha (3.9%), and
retention cysts (2.9%). The impacted teeth consisted of third
molars (18.8%) and canines (2.9%). The incidental findings
for the TMJ patients were erosion of the condyle (4.8%), osteophytes
(3.4%), and bifid condyle (2.9%).
Oral radiologists should be aware of possible incidental findings
and should be vigilant about comprehensively evaluating
possible underlying diseases.