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

• Author(s) / Creator(s)

  • Secanell, Marc
  • Lagravère, Manuel O.
  • Nijjar, Simrit
  • Carey, Jason P.
  • Forst, Darren
  • Flores-Mir, Carlos

• 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

  2014

• Subjects / Keywords

  • Cone-Beam Computed Tomography
  • Tooth
  • Three-Dimensional
  • Imaging

• Type of Item

  Article (Published)

• DOI

  https://doi.org/10.7939/R3P26QH2D

• License

  Attribution 4.0 International