Investigation of in vivo 3D Cone-Beam Computed Tomography Tooth Volume Measurement Protocols

  • Author(s) / Creator(s)
  • 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).

  • Date created
  • Subjects / Keywords
  • Type of Item
    Article (Published)
  • DOI
  • License
    Attribution 4.0 International
  • Language
  • Citation for previous publication
    • 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.
  • Link to related item