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CC BY 4.0 · Eur J Dent 2023; 17(02): 464-471
DOI: 10.1055/s-0042-1749158
Original Article

Computer-Aided System of the Mandibular Cortical Bone Porosity Assessment on Digital Panoramic Radiographs

Eha R. Astuti
1   Department of Dentomaxillofacial Radiology, Faculty of Dental Medicine, Airlangga University, Surabaya, Indonesia
,
Agus Z. Arifin 
2   Department of Informatics, Faculty of Intelligent Electrical and Information Technology, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
,
Rarasmaya Indraswari 
3   Department of Information Systems, Faculty of Intelligent Electrical and Information Technology, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
,
Ramadhan H. Putra
1   Department of Dentomaxillofacial Radiology, Faculty of Dental Medicine, Airlangga University, Surabaya, Indonesia
,
Nastiti F. Ramadhani
1   Department of Dentomaxillofacial Radiology, Faculty of Dental Medicine, Airlangga University, Surabaya, Indonesia
4   Graduate Student of Dental Health Sciene Program, Faculty of Dental Medicine, Airlangga University, Surabaya, Indonesia
,
Berty Pramatika
5   Universitas Brawijaya Hospital, Brawijaya University, Malang, Indonesia
› Author Affiliations Funding None.
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Abstract

Objectives The loss of bone mineral density (BMD) in various sites of the body, including the mandible, is the main sign of osteoporosis. Thus, the computer-aided diagnosis (CAD) system was developed for bone density assessment and patients were classified into normal, osteopenia, and osteoporosis groups using a digital panoramic radiograph.

Material and Methods Data of dental panoramic radiographs and corresponding BMD assessments from 123 postmenopausal women were collected. For the proposed CAD system test, regions of interest (ROI) that were located below the left and right mental foramen on dental panoramic radiographs were determined. The width and texture of the mandibular cortical bone in each ROI were used to classify the data into normal, osteopenia, and osteoporosis classes. The width of the mandibular cortical was measured using the polynomial fitting method. The texture feature of the cortical bone is obtained by calculating the average value of the grayscale intensity of cortical bone. The classification result was obtained by using a multiclass support vector machine.

Results The experimental results using 10-fold cross-validation showed that the proposed system achieved an average accuracy of 86.50% for osteoporosis classification on dental panoramic radiographs. The average misclassification error and relative foreground area error of the segmentation process were 5.21 and 12.98%, respectively. From the analysis of the cortical width measurement process, highest average mandibular cortical width (MCW) was found in the normal patient category compared with the other classes.

Conclusion This research showed that the proposed computer-aided system can be used for osteoporosis and osteopenia assessment by measuring the MCW and texture on dental panoramic radiographs with the average system accuracy of 89.52%.

Keywords

computer-aided system - dental panoramic radiographs - mandibular cortical bone - osteoporosis - bone mineral density


Publication History

Article published online:
19 September 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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