지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.9
- 수록면
- 85 - 90 (6page)
이용수
초록· 키워드
오류제보하기
Purpose: The aim of this study was to develop an automated software to extract tooth and pulpal area from sectional cone-beam computed tomography (CBCT) images, which can guarantee more reproducible, objective and time-saving way to measure pulp/tooth volume ratio.
Methods: The software program was developed using MATLAB (MathWorks). To determine the optimal threshold for the region of interest (ROI) extraction, user interface to adjust the threshold for extraction algorithm was added. Default threshold was determined after several trials to make the outline of extracted ROI fitting to the tooth and pulpal outlines. To test the effect of starting point location selected initially in the pulpal area on the final result, pulp/tooth volume ratio was calculated 5 times with different 5 starting points.
Results: Navigation interface is composed of image loading, zoom-in, zoom-out, and move tool. ROI extraction process can be shown by check in the option box. Default threshold is adjusted for the extracted tooth area to cover whole tooth including dentin, cementum, and enamel. Of course, the result can be corrected, if necessary, by the examiner as well as by changing the threshold of density of hard tissue. Extracted tooth and pulp area are reconstructed three-dimensional (3D) and pulp/tooth volume ratio is calculated by voxel counting on reconstructed model. The difference between the pulp/tooth volume ratio results from the 5 different extraction starting points was not significant.
Conclusions: In further studies based on a large-scale sample, the most proper threshold to present the most significant relationship between age and pulp/tooth volume ratio and the tooth correlated with age the most will be explored. If the software can be improved to use whole CBCT data set rather than just sectional images and to detect pulp canal in the original 3D images generated by CBCT software itself, it will be more promising in practical uses.
Methods: The software program was developed using MATLAB (MathWorks). To determine the optimal threshold for the region of interest (ROI) extraction, user interface to adjust the threshold for extraction algorithm was added. Default threshold was determined after several trials to make the outline of extracted ROI fitting to the tooth and pulpal outlines. To test the effect of starting point location selected initially in the pulpal area on the final result, pulp/tooth volume ratio was calculated 5 times with different 5 starting points.
Results: Navigation interface is composed of image loading, zoom-in, zoom-out, and move tool. ROI extraction process can be shown by check in the option box. Default threshold is adjusted for the extracted tooth area to cover whole tooth including dentin, cementum, and enamel. Of course, the result can be corrected, if necessary, by the examiner as well as by changing the threshold of density of hard tissue. Extracted tooth and pulp area are reconstructed three-dimensional (3D) and pulp/tooth volume ratio is calculated by voxel counting on reconstructed model. The difference between the pulp/tooth volume ratio results from the 5 different extraction starting points was not significant.
Conclusions: In further studies based on a large-scale sample, the most proper threshold to present the most significant relationship between age and pulp/tooth volume ratio and the tooth correlated with age the most will be explored. If the software can be improved to use whole CBCT data set rather than just sectional images and to detect pulp canal in the original 3D images generated by CBCT software itself, it will be more promising in practical uses.
목차
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
REFERENCES
참고문헌 (17)
참고문헌 신청
[학술지(정기간행물)] - Cameriere R / 2012 / Age estimation by pulp/tooth ratio in lower premolars by orthopantomography / Forensic Sci Int 214 : 105 ~ 112
[학술지(정기간행물)] - Fritsch FL / 2013 / Human dental age estimation by cone beam computed tomography-an in vitro study / J Forensic Odontostomatol 31 (Suppl 1) : 149 ~ 150
[학술지(정기간행물)] - Star H / 2011 / Human dental age estimation by calculation of pulp-tooth volume ratios yielded on clinically acquired cone beam computed tomography images of monoradicular teeth / J Forensic Sci 56 (Suppl 1) : S77 ~ S82
[학술지(정기간행물)] - Vandevoort FM / 2004 / Age calculation using X-ray microfocus computed tomographical scanning of teeth: a pilot study / J Forensic Sci 49 : 787 ~ 790
[학술지(정기간행물)] - Yang F / 2006 / Dental age estimation through volume matching of teeth imaged by cone-beam CT / Forensic Sci Int 159 (Suppl 1) : S78 ~ S83
[학술지(정기간행물)] - Fritsch FL / 2013 / Human dental age estimation by cone beam computed tomography-an in vitro study / J Forensic Odontostomatol 31 (Suppl 1) : 149 ~ 150
[학술지(정기간행물)] - Star H / 2011 / Human dental age estimation by calculation of pulp-tooth volume ratios yielded on clinically acquired cone beam computed tomography images of monoradicular teeth / J Forensic Sci 56 (Suppl 1) : S77 ~ S82
[학술지(정기간행물)] - Vandevoort FM / 2004 / Age calculation using X-ray microfocus computed tomographical scanning of teeth: a pilot study / J Forensic Sci 49 : 787 ~ 790
[학술지(정기간행물)] - Yang F / 2006 / Dental age estimation through volume matching of teeth imaged by cone-beam CT / Forensic Sci Int 159 (Suppl 1) : S78 ~ S83
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UCI(KEPA) : I410-ECN-0101-2017-515-001417960