Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Oral and maxillofacial radiologyAccuracy of segmentation of tooth structures using 3 different CBCT machines
Section snippets
Study sample and collection
This study was carried out on 2 dry, intact adult human mandibles of unknown gender collected from the Department of Anatomy at KU Leuven. Ethical review board approval was obtained (ML9535/ML9248, ERB University Hospitals Leuven).
Image acquisition (cone beam computed tomography, micro-computed tomography)
The mandibles were placed on a plastic tray with copper filters of 0.5 mm in front of the X-ray beam source to simulate soft tissue and to reduce X-ray beam-hardening effects.15 Both dry dentate mandibles were scanned using 3 different CBCT machines (Table I):
Results
The volume measurements of the μCT revealed a strong positive correlation with those of the 4 CBCT protocols and with the physical measurements determined using the Archimedes principle (r > 0.90) when evaluated using the Pearson correlation (Table II).
The mean absolute difference in percentage between physical measurements determined using the Archimedes principle and CBCT volume measurements was calculated using the Bland-Altman method and was found to be 1.9% with Accuitomo 170 180°
Discussion
When looking at the future of 3-D printed medical tools and replicas as a support for clinical diagnosis, planning, and treatment, it is of utmost importance to assess the accuracy of the virtual 3-D model obtained after segmentation. Since the CBCT data sets can be obtained from different scanners or scanning protocols, the present study assessed the accuracy and robustness of the obtained virtual 3-D models.
Volumetric measurements were made using the Archimedes principle, given its
Conclusion
In the present study, results reveal that all tested CBCT protocols provided high accuracy for tooth segmentation compared with anatomic tooth morphology. Therefore, CBCT-segmented teeth can be recommended as a tool for diagnostic and pretherapeutic planning procedures.
References (26)
- et al.
A comparative evaluation of cone beam computed tomography (CBCT) and multi-slice CT (MSCT), part I. On subjective image quality
Eur J Radiol
(2010) - et al.
Assessment of bone segmentation quality of cone-beam CT versus multislice spiral CT: a pilot study
Oral Surg Oral Med Oral Pathol Oral Radiol Endod
(2006) - et al.
Comparative localized linear accuracy of small-field cone-beam CT and multislice CT for alveolar bone measurements
Oral Surg Oral Med Oral Pathol Oral Radiol Endod
(2008) - et al.
Validation of the cone beam computed tomography–based stereolithographic surgical guide aiding autotransplantation of teeth: clinical case-control study
Oral Surg Oral Med Oral Pathol Oral Radiol Endod
(2013) - et al.
Validation of cone beam computed tomography–based tooth printing using different three-dimensional printing technologies
Oral Surg Oral Med Oral Pathol Oral Radiol Oral Endod
(2016) - et al.
CBCT-based bone quality assessment: are Hounsfield units applicable?
J Endod
(2015) - et al.
The validity of in vivo tooth volume determinations from cone-beam computed tomography
Angle Orthod
(2010) - et al.
CBCT-based bone quality assessment: are Hounsfield units applicable?
Dentomaxillofac Radiol
(2015) - et al.
Accuracy assessment of three-dimensional surface reconstructions of teeth from cone beam computed tomography scans
J Oral Rehabil
(2010) - et al.
Three-dimensional accuracy of measurements made with software on cone-beam computed tomography images
Am J Orthod Dentofacial Orthop
(2008)
Linear accuracy and reliability of cone beam CT derived 3-dimensional images constructed using an orthodontic volumetric rendering program
Angle Orthod
Accuracy of three-dimensional measurements obtained from cone beam computed tomography surface-rendered images for cephalometric analysis: influence of patient scanning position
Eur J Orthod
Accuracy and surgical feasibility of a CBCT-based stereolithographic surgical guide aiding autotransplantation of teeth: in vitro validation
J Oral Rehab
Cited by (32)
Impact of orthognathic surgery on root resorption: A systematic review
2022, Journal of Stomatology, Oral and Maxillofacial SurgeryCitation Excerpt :Hence, it is recommended that future studies should focus on investigating RR using 3D CBCT-based volumetric evaluation methods. To provide a more clinically oriented quantification of RR, segmented roots should be superimposed based on their crowns, while morphological changes should be assessed using color-coded distance mapping [33,34] Fig. 2 illustrates an example of a Le Fort I surgery case showing traditional (Fig. 2a-b) and proposed method (Fig. 2c) for the assessment of RR at follow-up. The main strength of this systematic review was the inclusion of studies evaluating RR following orthognathic surgery procedures which has not been previously investigated.
Artificial Intelligence for Fast and Accurate 3-Dimensional Tooth Segmentation on Cone-beam Computed Tomography
2021, Journal of EndodonticsAccuracy in teeth structures segmentation on MRI and CT images
2023, AI and IoT-Based Technologies for Precision MedicineChanges in alveolar bone width around maxillary implants, as determined through cone beam computed tomography based on bony landmarks: A preliminary study
2023, Clinical Implant Dentistry and Related ResearchTooth automatic segmentation from CBCT images: a systematic review
2023, Clinical Oral InvestigationsResearch of implant accuracy using a digital registration method
2023, Shanghai Kou Qiang Yi Xue / Shanghai Journal of Stomatology