Research Information System
Journal of Dentistry, Shiraz University of Medical Sciences, vol.22, no.3, pp.198-205, 2021 (Peer-Reviewed Journal)
Statement of the Problem: Intraosseous lesions of jaws can be imaged by cone beam
computed tomography (CBCT) and ultrasonography (USG). The knowledge of imaging
features of these two methods about intraosseous jaw lesions is important for dental
radiology.
Purpose: The aim of this study is to evaluate artificial mandible intraosseous lesions by
using CBCT and USG.
Materials and Method: In this in vitro study, intraosseous lesions containing water, milk,
olive oil, and liver were evaluated in 60 artificial mandibles by using CBCT and USG.
Lesion sizes were compared between CBCT and USG. Lesion sizes were measured on the
anterior-posterior, bucco-lingual, and superior-inferior sides. Hounsfield unit (HU) values of
the lesions in CBCT images were compared between different materials. Echogenicity of the
lesions were evaluated in USG images. One sample t and one-way Anova tests were used
for the statistical analysis of the study (p˂ 0.05).
Results: In all size measurements of the lesions, mean CBCT values were statistically higher when compared with USG. In CBCT images, statistically difference was found between
the HU values of lesions containing olive oil and other lesion contents. In USG images,
echogenicity of water, milk and olive oil was found to be anechoic and the echogenicity of
liver was found to be hypoechoic.
Conclusion: CBCT was found to be more accurate than USG in measurement of the size of
mandibular intraosseous lesions. According to the results of our study, it was thought that
only oil content could be differentiated by using CBCT HU values. It was found that lesions
with liquid and non-liquid contents could be differentiated with their echogenicity difference
in USG images.