Comparison of the Accuracy of 3-dimensional Cone-beam Computed Tomography and Micro–Computed Tomography Reconstructions by Using Different Voxel Sizes

Maret, Delphine; Peters, Ove A.; Galibourg, Antoine; Dumoncel, Jean; Esclassan, Rémi; Kahn, J.-L.; Sixou, Michel; Telmon, Norbert

doi:10.1016/j.joen.2014.04.014

Cited by 59 publications

(67 citation statements)

References 22 publications

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“…CBCT images allow the acquisition of 3-dimensional images of dentin bridges and enable their qualitative assessment (24,26,28). The results of our study showed that Ca(OH) 2 , MTA, Biodentine, and Single Bond Universal had different degrees of influence on dentin bridge formation, with the former 3 positively affecting the exposed pulp and actively initiating the formation of reparative dentin in each tooth and the latter one resulting in the formation of significantly lesser dentin bridges of a Clinical Research lower quality, thickness, and volume.…”

Section: Discussionmentioning

confidence: 99%

“…Although the CBCT diagnostics used in this study have sensitivity lower than that of light microscopy, they can provide additional information on tertiary dentin mineralization (24,26,28). The authors observed regions with different levels of mineralization on CBCT images, which is not possible in demineralized histologic sections.…”

Section: Discussionmentioning

confidence: 99%

“…Although the histologic evaluation of dentin bridge sections is commonly accepted as the gold standard, cone-beam computed tomographic (CBCT) imaging represents an innovative and noninvasive technique that offers the possibility of studying dental tissue without the need to destroy it (24)(25)(26)(27). In addition, 3-dimensional reconstruction of CBCT images eliminates the superimposition of surrounding structures (24).…”

mentioning

confidence: 99%

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Tomographic Evaluation of Reparative Dentin Formation after Direct Pulp Capping with Ca(OH)2, MTA, Biodentine, and Dentin Bonding System in Human Teeth

Nowicka

Wilk

Lipski

et al. 2015

Journal of Endodontics

114

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Tomographic Evaluation of Reparative Dentin Formation after Direct Pulp Capping with Ca(OH)2, MTA, Biodentine, and Dentin Bonding System in Human Teeth

Nowicka

Wilk

Lipski

et al. 2015

Journal of Endodontics

114

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“…Given the fact that the voxel size is another affecting parameter, adjusting the setting to a higher scan resolution could compensate the effect of soft tissue presence. Concerning this parameter, it has been indicated that the accuracy of the models appears to be connected to the voxel size [49], although the differences were small. However, others did not find increased accuracy of linear measurements on segmented surface models decreasing the voxel size from 0.4 to 0.25 mm [34].…”

Section: Discussionmentioning

confidence: 99%

Soft tissue coverage on the segmentation accuracy of the 3D surface-rendered model from cone-beam CT

2016

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ObjectivesThe aim of this study is to investigate the effect of soft tissue presence on the segmentation accuracy of the 3D hard tissue models from cone-beam computed tomography (CBCT).Materials and methodsSeven pairs of CBCT Digital Imaging and Communication in Medicine (DICOM) datasets, containing data of human cadaver heads and their respective dry skulls, were used. The effect of the soft tissue presence on the accuracy of the segmented models was evaluated by performing linear and angular measurements and by superimposition and color mapping of the surface discrepancies after splitting the mandible and maxillo-facial complex in the midsagittal plane.ResultsThe linear and angular measurements showed significant differences for the more posterior transversal measurements on the mandible (p < 0.01). By splitting and superimposing the maxillo-facial complex, the mean root-mean-square error (RMSE) as a measurement of inaccuracy decreased insignificantly from 0.936 to 0.922 mm (p > 0.05). The RMSE value for the mandible, however, significantly decreased from 1.240 to 0.981 mm after splitting (p < 0.01).ConclusionsThe soft tissue presence seems to affect the accuracy of the 3D hard tissue model obtained from a cone-beam CT, below a generally accepted level of clinical significance of 1 mm. However, this level of accuracy may not meet the requirement for applications where high precision is paramount.Clinical relevanceAccuracy of CBCT-based 3D surface-rendered models, especially of the hard tissues, are crucial in several dental and medical applications, such as implant planning and virtual surgical planning on patients undergoing orthognathic and navigational surgeries. When used in applications where high precision is paramount, the effect of soft tissue presence should be taken into consideration during the segmentation process.

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“…However, the latest CBCT apparatuses now permit scans with isotropic voxel resolutions down to 80 µm [55] or 76 µm [56] (Fig. 2c).…”

Section: Cone-beam Computed Tomographymentioning

confidence: 99%

Three-dimensional imaging of internal tooth structures: Applications in dental education

Kato

Ziegler

Utsumi

et al. 2016

Journal of Oral Biosciences

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BackgroundProviding comprehensive knowledge of the anatomy of human teeth is one of the basic functions of dental education, because a thorough understanding of their internal structure is one of the prerequisites for any successful clinical intervention. Several techniques have traditionally been employed to study and visualize the complex internal organization of human teeth. In contrast to these invasive techniques, modern imaging systems permit non-invasive analyses of the three-dimensional structure of human teeth. Owing to the relative ease of acquisition, handling, and distribution of the respective data, digital imaging techniques will also significantly influence dental education. HighlightIn this article, a broad overview of traditional and modern techniques for the visualization of internal tooth structures is provided. Emphasis is placed on micro-computed tomography systems and their application in endodontics. In addition, 3 the results derived from a comparison of histology and micro-computed tomography are presented. Apart from its utility in basic research, digital data can also be employed to create interactive three-dimensional models that are particularly suitable for teaching purposes. ConclusionNon-invasive, three-dimensional imaging techniques, in particular the various modalities of computed tomography, have ushered in a new era of endodontic studies.Owing to their digital nature, the results derived from these techniques can not only be easily analyzed and distributed but also be rapidly integrated into the teaching materials. Recent studies as well as the data shown in the present contribution suggest that digital educational materials lead to an improved understanding of the complex anatomy of human teeth.

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Comparison of the Accuracy of 3-dimensional Cone-beam Computed Tomography and Micro–Computed Tomography Reconstructions by Using Different Voxel Sizes

Cited by 59 publications

References 22 publications

Tomographic Evaluation of Reparative Dentin Formation after Direct Pulp Capping with Ca(OH)2, MTA, Biodentine, and Dentin Bonding System in Human Teeth

Tomographic Evaluation of Reparative Dentin Formation after Direct Pulp Capping with Ca(OH)2, MTA, Biodentine, and Dentin Bonding System in Human Teeth

Soft tissue coverage on the segmentation accuracy of the 3D surface-rendered model from cone-beam CT

Three-dimensional imaging of internal tooth structures: Applications in dental education

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