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Reliability of Artificial Intelligence-Based Cone Beam Computed Tomography Integration with Digital Dental Images

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Prospective study to estimate mandibular cancellous bone density using large-volume cone-beam computed tomography.

Munetaka Naitoh¹, Akiko Hirukawa, Akitoshi Katsumata

¹Department of Oral and Maxillofacial Radiology, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan. mune@dpc.aichi-gakuin.ac.jp

Clinical Oral Implants Research

|May 26, 2010

Summary

Cone-beam computed tomography (CBCT) can accurately assess mandibular bone density using a regression line with multislice CT (MSCT). A reference bone block aids in evaluating low bone density in CBCT scans.

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Area of Science:

Dental radiology
Biomedical imaging
Bone densitometry

Background:

Cone-beam computed tomography (CBCT) voxel values lack absolute bone density quantification.
Accurate assessment of mandibular bone mineral density (BMD) is crucial for dental implant success.

Purpose of the Study:

To prospectively evaluate a regression line for estimating BMD from CBCT.
To assess the utility of a reference bone block for evaluating low mandibular bone density using CBCT.

Main Methods:

15 patients with mandibular bone grafts underwent CBCT and multislice CT (MSCT).
CBCT voxel values were converted to BMDs using a regression line.
Differences between CBCT-derived and MSCT-derived BMDs were calculated.
CBCT voxel values were compared against a reference bone block for sites with known HA density (100-300 mg/cm³).

Main Results:

The mean difference in BMD between CBCT and MSCT was 38 mg/cm³ of hydroxyapatite (HA).
The reference bone block accurately assessed bone density in 84% (38/45) of sites.

Conclusions:

A regression line effectively estimates BMD in mandibular cancellous bone using CBCT.
A reference bone block is a useful tool for assessing low mandibular bone density on large-volume CBCT scans.