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Proc Inst Mech Eng H. 2018 Oct 11:954411918806333. doi: 10.1177/0954411918806333. [Epub ahead of print]

Density estimation based on the Hounsfield unit value of cone beam computed tomography imaging of the jawbone system.

Author information

1
1 Medical Faculty of YARSI University, Jakarta, Indonesia.
2
2 Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia.
3
3 School of Dental Sciences, Health Campus, Universiti Sains Malaysia, Kota Bharu, Malaysia.
4
4 Universiti Teknologi PETRONAS, Seri Iskandar, Malaysia.

Abstract

The aim of this study is to investigate the estimation of density from the Hounsfield unit of cone beam computed tomography data in dental imaging, especially for dental implant application. A jaw phantom with various known densities of anatomical parts (e.g. soft tissue, cortical bone, trabecular bone, tooth enamel, tooth dentin, sinus cavity, spinal cord and spinal disc) has been used to test the accuracy of the Hounsfield unit of cone beam computed tomography in estimating the mechanical density (true density). The Hounsfield unit of cone beam computed tomography data was evaluated via the MIMICS software using both two-dimensional and three-dimensional methods, and the results showed correlation with the true density of the object. In addition, the results revealed that the Hounsfield unit of cone beam computed tomography and bone density had a logarithmic relation, rather than a linear one. To this end, the correlation coefficient of logarithmic correlation (R2 = 0.95) is higher than the linear one (R2 = 0.77).

KEYWORDS:

Bone density; cone beam computed tomography scanning; dental implant; phantom

PMID:
30309283
DOI:
10.1177/0954411918806333

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