Abstract
Introduction
The objective of the study was to evaluate the ability of large-volume cone-beam computed
tomography (CBCT) to detect horizontal root fracture and to test the influence of
a metallic post.
Methods
Through the examination of 40 teeth by large-volume CBCT (20-cm height and 15-cm diameter
cylinder) at 0.2-mm voxel resolution, 2 observers analyzed the samples for the presence
and localization of horizontal root fracture.
Results
The values of accuracy in the groups that had no metallic post ranged from 33%–68%,
whereas for the samples with the metallic post, values showed a wide variation (38%–83%).
Intraobserver agreement showed no statistically significant difference between the
groups with/without metallic post; both ranged from very weak to weak (kappa, 0.09–0.369).
Conclusions
The low accuracy and low intraobserver and interobserver agreement reflect the difficulty
in performing an adequate diagnosis of horizontal root fractures through a large-volume
CBCT by using a small voxel reconstruction.
Key Words
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Article info
Publication history
Published online: April 30, 2012
Footnotes
Funding provided by CNPq (National Council for Research, Dr Marcelo Cavalcanti Research Productivity Scholarship), Brasilia, Brazil, grant No. 303847/2009-3 (to M.G.P.C.); Universal Research Project grant No. 472895/2009-5; and CAPES (PhD scholarships to F.F.C., B.F.G., O.S.U., and L.R.P.).
Identification
Copyright
© 2012 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.
