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Permanent link (DOI): https://doi.org/10.7939/R3P26QH2D
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Investigation of in vivo 3D Cone-Beam Computed Tomography Tooth Volume Measurement Protocols Open Access
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Carey, Jason P.
Lagravère, Manuel O.
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Cone-Beam Computed Tomography
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Background The objective of this study is to analyze a set of previously developed and proposed image segmentation protocols for precision in both intra- and inter-rater reliability for in vivo tooth volume measurements using cone-beam computed tomography (CBCT) images. Methods Six 3D volume segmentation procedures were proposed and tested for intra- and inter-rater reliability to quantify maxillary first molar volumes. Ten randomly selected maxillary first molars were measured in vivo in random order three times with 10 days separation between measurements. Intra- and inter-rater agreement for all segmentation procedures was attained using intra-class correlation coefficient (ICC). Results The highest precision was for automated thresholding with manual refinements. Conclusions A tooth volume measurement protocol for CBCT images employing automated segmentation with manual human refinement on a 2D slice-by-slice basis in all three planes of space possessed excellent intra- and inter-rater reliability. Three-dimensional volume measurements of the entire tooth structure are more precise than 3D volume measurements of only the dental roots apical to the cemento-enamel junction (CEJ).
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Forst, D., Nijjar, S., Flores-Mir, C., Carey, J., Secanell, M., and Lagravère, M. (2014). Investigation of in vivo 3D Cone-Beam Computed Tomography Tooth Volume Measurement Protocols. Progress in Orthodontics, 15(69), 1-13.
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Copyright note: � 2014 Forst et al.; licensee Springer.