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A comparison of cone-beam computed tomography and direct measurement in the examination of the mandibular canal and adjacent structures.
J Endod. 2010 Jul; 36(7):1191-4.JE

Abstract

INTRODUCTION

The purpose of this investigation was to assess the ability of cone-beam computed tomography (CBCT) scanning to measure distances from the apices of selected posterior teeth to the mandibular canal. Measurements were taken from the apices of all posterior teeth that were superior to the mandibular canal.

METHODS

A pilot study was performed to determine the scanning parameters that produced the most diagnostic image and the best dissection technique. Twelve human hemimandibles with posterior teeth were scanned at .20 voxels on an I-CAT Classic CBCT device (Imaging Sciences International, Hatfield, PA), and the scans were exported in Digital Imaging and Communications in Medicine (DICOM) format. The scans were examined in InVivo Dental software (Anatomage, San Jose, CA), and measurements were taken from the apex of each root along its long axis to the upper portion of the mandibular canal. The specimens were dissected under a dental operating microscope, and analogous direct measurements were taken with a Boley gauge. All measurements were taken in triplicate at least 1 week apart by one individual (TSK). The results were averaged and the data separated into matching pairs for statistical analysis.

RESULTS

There was no statistical difference (alpha = .05) between the methods of measurement according to the Wilcoxon matched pairs test (p = 0.676). For the anatomic measurements, the intra-rater correlation coefficient (ICC) was .980 and for the CBCT it was .949, indicating that both methods were highly reproducible. Both measurement methods were highly predictive of and highly correlated to each other according to regression and correlation analysis, respectively.

CONCLUSIONS

Based on the results of this study, the I-CAT Classic can be used to measure distances from the apices of the posterior teeth to the mandibular canal as accurately as direct anatomic dissection.

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Authors+Show Affiliations

Kim TS
Department of Endodontics, Loma Linda University School of Dentistry, Loma Linda, CA 92350, USA.
Caruso JM
No affiliation info available
Christensen H
No affiliation info available
Torabinejad M
No affiliation info available

MeSH

BicuspidCadaverCephalometryCone-Beam Computed TomographyHumansImage Processing, Computer-AssistedImaging, Three-DimensionalMandibleMandibular NerveMicrodissectionMolarOdontometryPilot ProjectsReproducibility of ResultsTooth ApexTooth Root

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

20630297

Clinical Trial Links

Comparative Volumetric Assessment of Alveolar Ridge Preservation Utilizing Different Bone Grafting Materials

Citation

Kim, Thomas S., et al. "A Comparison of Cone-beam Computed Tomography and Direct Measurement in the Examination of the Mandibular Canal and Adjacent Structures." Journal of Endodontics, vol. 36, no. 7, 2010, pp. 1191-4.
Kim TS, Caruso JM, Christensen H, et al. A comparison of cone-beam computed tomography and direct measurement in the examination of the mandibular canal and adjacent structures. J Endod. 2010;36(7):1191-4.
Kim, T. S., Caruso, J. M., Christensen, H., & Torabinejad, M. (2010). A comparison of cone-beam computed tomography and direct measurement in the examination of the mandibular canal and adjacent structures. Journal of Endodontics, 36(7), 1191-4. https://doi.org/10.1016/j.joen.2010.03.028
Kim TS, et al. A Comparison of Cone-beam Computed Tomography and Direct Measurement in the Examination of the Mandibular Canal and Adjacent Structures. J Endod. 2010;36(7):1191-4. PubMed PMID: 20630297.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A comparison of cone-beam computed tomography and direct measurement in the examination of the mandibular canal and adjacent structures. AU - Kim,Thomas S, AU - Caruso,Joseph M, AU - Christensen,Heidi, AU - Torabinejad,Mahmoud, PY - 2009/12/01/received PY - 2010/03/16/revised PY - 2010/03/23/accepted PY - 2010/7/16/entrez PY - 2010/7/16/pubmed PY - 2010/11/17/medline SP - 1191 EP - 4 JF - Journal of endodontics JO - J Endod VL - 36 IS - 7 N2 - INTRODUCTION: The purpose of this investigation was to assess the ability of cone-beam computed tomography (CBCT) scanning to measure distances from the apices of selected posterior teeth to the mandibular canal. Measurements were taken from the apices of all posterior teeth that were superior to the mandibular canal. METHODS: A pilot study was performed to determine the scanning parameters that produced the most diagnostic image and the best dissection technique. Twelve human hemimandibles with posterior teeth were scanned at .20 voxels on an I-CAT Classic CBCT device (Imaging Sciences International, Hatfield, PA), and the scans were exported in Digital Imaging and Communications in Medicine (DICOM) format. The scans were examined in InVivo Dental software (Anatomage, San Jose, CA), and measurements were taken from the apex of each root along its long axis to the upper portion of the mandibular canal. The specimens were dissected under a dental operating microscope, and analogous direct measurements were taken with a Boley gauge. All measurements were taken in triplicate at least 1 week apart by one individual (TSK). The results were averaged and the data separated into matching pairs for statistical analysis. RESULTS: There was no statistical difference (alpha = .05) between the methods of measurement according to the Wilcoxon matched pairs test (p = 0.676). For the anatomic measurements, the intra-rater correlation coefficient (ICC) was .980 and for the CBCT it was .949, indicating that both methods were highly reproducible. Both measurement methods were highly predictive of and highly correlated to each other according to regression and correlation analysis, respectively. CONCLUSIONS: Based on the results of this study, the I-CAT Classic can be used to measure distances from the apices of the posterior teeth to the mandibular canal as accurately as direct anatomic dissection. SN - 1878-3554 UR - https://www.unboundmedicine.com/medline/citation/20630297/A_comparison_of_cone_beam_computed_tomography_and_direct_measurement_in_the_examination_of_the_mandibular_canal_and_adjacent_structures_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0099-2399(10)00277-3 DB - PRIME DP - Unbound Medicine ER -