Imaging Sci Dent.  2018 Sep;48(3):153-160. 10.5624/isd.2018.48.3.153.

The efficacy of ultrasonography in monitoring the healing of jaw lesions

• Zainedeen
• Al Haffar
• Kochaji N
• Wassouf G

• KMID: 2420542
• DOI: http://doi.org/10.5624/isd.2018.48.3.153

Abstract

PURPOSE
This study aimed to assess the reliability of ultrasonography (US) in comparison with cone-beam computed tomography (CBCT) as a tool for monitoring the healing of jaw lesions.
MATERIALS AND METHODS
Twenty-one radiolucent lesions in jaws referred to the Oral Surgery Department at our institution were selected for this study. All lesions underwent CBCT and US examinations. The anteroposterior, superoinferior, and mesiodistal dimensions of the lesions were measured on CBCT and US images before surgery and at 6 months after surgery. The dimensions were compared between the US and CBCT images. Blood-flow velocity around the lesions was measured by color Doppler before surgery and at 1 week and 6 months after surgery to assess the capability of US to show changes in blood-flow velocity around the lesion.
RESULTS
Before surgery, there were no significant differences between US and CBCT in the mesiodistal and anteroposterior dimensions, although a significant difference was found in the superoinferior dimension (P < .05). However, at 6 months after surgery, significant differences were found between US and CBCT in all dimensions, and it is likely that the US measurements more accurately reflected the extent of healing. The average blood-flow velocity increased at 1 week after surgery (5.84 cm/s) compared with the velocity before surgery (4 cm/s) (P < .05). Then, at 6 months after surgery, the blood-flow velocity significantly decreased (3.53 cm/s) compared to the velocity measured at 1 week after surgery (P < .05).
CONCLUSION
US with color Doppler was confirmed to be a more efficient tool than CBCT for monitoring bone healing.

Keyword

Ultrasonography; Cone-Beam Computed Tomography; Bone Diseases; Jaw

MeSH Terms

Bone Diseases
Cone-Beam Computed Tomography
Jaw*
Surgery, Oral
Ultrasonography*

Figure

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  Fig. 1 Cone-beam computed tomographic images of a dentigerous cyst before surgery. A. The mesiodistal dimension was measured on the sagittal image. B. The anteroposterior dimension was measured on the axial image. C. The superoinferior dimension was measured on the coronal image.

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  Fig. 2 A. A panoramic image shows the same dentigerous cyst around the mesiodens in the anterior maxilla. B. The mesiodistal and anteroposterior dimensions were measured on the ultrasound longitudinal scan. C. The superoinferior dimension of the same lesion before surgery was measured on the ultrasound transverse scan.

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  Fig. 3 A. Blood-flow velocity around the same lesion before surgery. B. Blood-flow velocity around the surgical site at 1 week after surgery in the same case. C. Blood-flow velocity around the surgical site at 6 months after surgery in the same case.

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  Fig. 4 Cone-beam computed tomographic images at 6 months after surgery from the same case. A. The mesiodistal dimension was measured on the sagittal image. B. The anteroposterior dimension was measured on the axial image. C. The superoinferior dimension was measured on the coronal image.

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  Fig. 5 Ultrasonographic images at 6 months after surgery from the same case. A. The mesiodistal and anteroposterior dimensions were measured on the longitudinal scan. Arrows show new bone formation. B. The superoinferior dimension was measured on the transverse scan.

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  Fig. 6 A cone-beam computed tomographic (CBCT) image (A) and an ultrasonographic (US) image (B) show the first of 2 cases in which US waves could not penetrate the thick buccal bone plate. CBCT (C) and US (D) images show the second of 2 cases in which US waves could not penetrate the thick buccal bone plate.

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