Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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A clinical pilot study of jawbone mineral density measured by the newly developed dual-energy cone-beam computed tomography method compared to calibrated multislice computed tomography

  • Kim, Hyun Jeong (Department of Dental Anesthesiology and Dental Research Institute, School of Dentistry, Seoul National University) ;
  • Kim, Ji Eun (SMDsolution Co., Ltd.) ;
  • Choo, Jiyeon (SMDsolution Co., Ltd.) ;
  • Min, Jeonghee (SMDsolution Co., Ltd.) ;
  • Chang, Sungho (Ray Co., Ltd.) ;
  • Lee, Sang Chul (Ray Co., Ltd.) ;
  • Pyun, Woong Beom (Dental Research Institute, School of Dentistry, Seoul National University) ;
  • Seo, Kwang-Suk (Department of Dental Anesthesiology and Dental Research Institute, School of Dentistry, Seoul National University) ;
  • Karm, Myong-Hwan (Department of Dental Anesthesiology, Seoul National University Dental Hospital) ;
  • Koo, Ki-Tae (Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University) ;
  • Rhyu, In-Chul (Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University) ;
  • Myoung, Hoon (Department of Oral and Maxillofacial Surgery and Dental Research Institute, School of Dentistry, Seoul National University) ;
  • Heo, Min-Suk (Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University)
  • Received : 2019.09.03
  • Accepted : 2019.10.07
  • Published : 2019.12.31
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Abstract

Purpose: This clinical pilot study was performed to determine the effectiveness of dual-energy cone-beam computed tomography (DE-CBCT) in measuring bone mineral density (BMD). Materials and Methods: The BMD values obtained using DE-CBCT were compared to those obtained using calibrated multislice computed tomography (MSCT). After BMD calibration with specially designed phantoms, both DE-CBCT and MSCT scanning were performed in 15 adult dental patients. Three-dimensional (3D) Digital Imaging and Communications in Medicine data were imported into a dental software program, and the defined regions of interest (ROIs) on the 3-dimensional surface-rendered images were identified. The automatically-measured BMD values of the ROIs (g/㎤), the differences in the measured BMD values of the matched ROIs obtained by DE-CBCT and MSCT 3D images, and the correlation between the BMD values obtained by the 2 devices were statistically analyzed. Results: The mean BMD values of the ROIs for the 15 patients as assessed using DE-CBCT and MSCT were 1.09±0.07 g/㎤ and 1.13±0.08 g/㎤, respectively. The mean of the differences between the BMD values of the matched ROIs as assessed using DE-CBCT and calibrated MSCT images was 0.04±0.02 g/㎤. The Pearson correlation coefficient between the BMD values of DE-CBCT and MSCT images was 0.982 (r=0.982, P<0.001). Conclusion: The newly developed DE-CBCT technique could be used to measure jaw BMD in dentistry and may soon replace MSCT, which is expensive and requires special facilities.

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References

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