DOI: 10.26650/eor.2018.478
Purpose
The objective of this study was to compare
the accuracy of the Cavalieri’s principle and 3D reconstruction in predicting
the volume of a bony defect.
Materials and Methods
Defects of the same approximate size were
created on nine artificial mandibles.
The actual volume of the defect on each mandible was measured by water
displacement, and served as the control. Each mandible was then scanned using a
CBCT and volume measurements were made for each defect using two techniques:
Cavalieri’s principle and 3D reconstruction. For each defect, the volume
obtained by each of the two techniques was compared to the control volume using
the analysis of variances (ANOVA) with p<0.05.
Results
ANOVA between the control, 3D
reconstruction and Cavalieri’s principle groups showed no statistically
significant differences (p=.058). When the control group was further analyzed
by Dunnett’s post-hoc test, the results from Cavalieri’s principle were found
to be statistically different than the control group (p=.035), whereas the
results of 3D reconstruction technique did not reach the level of significance
(p=.523).
Conclusion
Cavalieri’s principle significantly
underestimates the actual control volume, and is less accurate than the 3D
reconstruction technique. The 3D reconstruction method is a reliable technique
in measuring volume of bony defects.
Cone-beam CT; three-dimensional imaging; Cavalieri’s principle; defect; image reconstruction
Primary Language | English |
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Subjects | Health Care Administration |
Journal Section | Original Research Articles |
Authors | |
Publication Date | May 1, 2018 |
Submission Date | August 9, 2017 |
Published in Issue | Year 2018 Volume: 52 Issue: 2 |