The Validity of In Vivo Tooth Volume Determinations From Cone-Beam Computed Tomography

Liu, Yi; Olszewski, Raphaël; Alexandroni, Emanuel S.; Enciso, Reyes; Xu, Tianmin; Mah, James

doi:10.2319/121608-639.1

Cited by 83 publications

(116 citation statements)

References 20 publications

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“…The presented data confirm the accuracy of volumetric measurements from CBCT data compared with mCT data. Liu et al (17) reported a slight deviation of segmented teeth volumes from the physical volumes within À4% to 7% using manual segmentation strategies and without any smoothing operations. Furthermore, Michetti et al (19) reported slightly smaller segmented root canal volumes from CBCT data (less than 3%) compared with the volumes measured from digitized images from histologic sections.…”

Section: Discussionmentioning

confidence: 99%

“…Using the livewire boundary technique, boundaries are extracted in one fifth of the time required for manual tracing but with 4.4 times greater accuracy and 4.8 times greater reproducibility (22). This proved to be of great value, especially for teeth in the posterior area of the mandible where segmentation is more difficult because of the cortical bone (17). Furthermore, using 3D semiautomatic active contour level set methods available in ITK-SNAP offers the advantages of a greatly reduced working time, high accuracy, and real-time interaction with the segmentation process in contrast to the commonly used low-level methods (region growing).…”

Section: Clinical Researchmentioning

confidence: 99%

“…Moreover, volumetric measurements from CBCT data have been reported and validated in several studies in vitro and in vivo (13)(14)(15)(17)(18)(19)(20). The overall aim of this study was to develop a standardized quantitative method for the evaluation and analysis of the outcome of RET based on CBCT volumetric measurements.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

3-dimensional Analysis of Regenerative Endodontic Treatment Outcome

EzEldeen

Gorp

Dessel

et al. 2015

Journal of Endodontics

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Introduction: A growing body of evidence supports the regeneration potential of dental tissues after regenerative endodontic treatment (RET). Nevertheless, a standard method for the evaluation of RET outcome is lacking. The aim of this study was to develop a standardized quantitative method for RET outcome analysis based on cone-beam computed tomographic (CBCT) volumetric measurements. Methods: Five human teeth embedded in mandibular bone samples were scanned using both an Accuitomo 170 CBCT machine (Morita, Kyoto, Japan) and a SkyScan 1174 micro-computed tomographic (mCT) system (SkyScan, Antwerp, Belgium). For subsequent clinical application, clinical data and low-dose CBCT scans (preoperatively and follow-up) from 5 immature permanent teeth treated with RET were retrieved. In vitro and clinical 3-dimensional image data sets were imported into a dedicated software tool. Two segmentation steps were applied to extract the teeth of interest from the surrounding tissue (livewire) and to separate tooth hard tissue and root canal space (level set methods). In vitro and clinical volumetric measurements were assessed separately for differences using Wilcoxon matched pairs test. Pearson correlation analysis and Bland-Altman plots were used to evaluate the relation and agreement between the segmented CBCT and mCT volumes. Results: The results showed no statistical differences and strong agreement between CBCT and mCT volumetric measurements. Volumetric comparison of the root hard tissue showed significant hard tissue formation. (The mean volume of newly formed hard tissue was 27.9 [AE10.5] mm 3 [P < .05]). Conclusions: Analysis of 3-dimensional data for teeth treated with RET offers valuable insights into the treatment outcome and patterns of hard tissue formation. (J Endod 2015;-:1-8)

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Section: Discussionmentioning

confidence: 99%

Section: Clinical Researchmentioning

confidence: 99%

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3-dimensional Analysis of Regenerative Endodontic Treatment Outcome

EzEldeen

Gorp

Dessel

et al. 2015

Journal of Endodontics

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“…18 When segmentation of an object is performed with different thresholds, the threshold values must be changed. 19 For example, since the bone density is low and multiple bones overlap in the mandibular head region, segmentation is more difficult than in other regions. 20 In this study, the mandible was displayed in the Analyze ROI window, and the thresholds for the area within the perimeter of the mandibular cortex were defined on all slides.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of mandibular volume using cone-beam computed tomography and correlation with cephalometric values

Katayama

Yamaguchi

Sugiura

et al. 2013

The Angle Orthodontist

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Objective: To investigate the association between maxillofacial morphology and mandibular bone volume in patients with skeletal malocclusion. Materials and Methods: Subjects were 118 adult Japanese (58 males and 60 females). Skeletal malocclusion was classified, based on cephalometric analysis, into skeletal Classes I (21u # ANB , 4u), II (ANB $ 4u), and III (ANB , 21u). Using cone-beam computed tomography and threedimensional image analysis software, the dental crowns and mandible were separated, with only the mandible extracted. This was then reconstructed as a three-dimensional model, from which the mandibular volume was measured. Results: No significant difference in mandibular volume was noted among skeletal Classes I, II, and III, nor was there any significant correlation between mandibular volume and the ANB, SNB, or mandibular plane angles. There was occasional and limited correlation between mandible volume and gonial angle and certain cephalometric distance parameters. Conclusion: We conclude that proper understanding of the three-dimensional maxillofacial morphology requires not only cephalometric radiographic tracings but also high-resolution analysis of the mandibular area, width, and volume. (Angle Orthod. 2014;84:337-342.)

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“…In literature, there are quantitative studies carried out on the use of CBCT systems and software in dental volumetric analysis [4,[10][11][12][13][14][15][16][17]; however, the effect of section thickness on the accuracy of the volume estimate obtained by using CBCT has not been researched in these studies.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Slice Thickness on the Assessment of Bone Defect Volumes by the Cavalieri Principle Using Cone Beam Computed Tomography

2012

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The purpose of this study was to investigate the possible effects of section thickness on volume estimations obtained by cone beam computed tomography. Intraosseal cavities representing bone defects on vestibular sides of the two dry sheep mandibles were scanned by a cone beam computed tomography system. Consecutive sections at 0.2, 0.6, 1, 1.4, and 2.2 mm thickness were used to estimate the volumes of the cavities using the Cavalieri principle of stereological methods. Estimated volumes are then compared with the volumes obtained by the Archimedean principle. In 0.2-, 0.6-, and 1-mm-thick slices, the volumes estimated by the Cavalieri principle did not differ from the volumes by the Archimedean principle (p > 0.05). The 0.2 mm slice-thickness group had the highest asymptotic significance value (p 00.6). Although the thinnest slice appears to provide the most accurate values, slice thickness up to 1 mm can be chosen for volume calculations on CBCT images.

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The Validity of In Vivo Tooth Volume Determinations From Cone-Beam Computed Tomography

Cited by 83 publications

References 20 publications

3-dimensional Analysis of Regenerative Endodontic Treatment Outcome

3-dimensional Analysis of Regenerative Endodontic Treatment Outcome

Evaluation of mandibular volume using cone-beam computed tomography and correlation with cephalometric values

The Effect of Slice Thickness on the Assessment of Bone Defect Volumes by the Cavalieri Principle Using Cone Beam Computed Tomography

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