Journal
JOURNAL OF ENDODONTICS
Volume 40, Issue 11, Pages 1865-1868Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.joen.2014.07.012
Keywords
Canal detection; mesiobuccal canal; molar; optical coherence tomography
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Funding
- Research Grant for Longevity Sciences from the Ministry of Health, Labour and Welfare [23-20]
- Japan Society for the Promotion of Science [23390432, 25293385, 25861790, 25870196]
- Grants-in-Aid for Scientific Research [25293385, 25870195, 25870196, 25861790] Funding Source: KAKEN
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Introduction: The purpose of this study was to investigate the ability of swept-source optical coherence tomographic (SS-OCT) imaging to detect a second mesiobuccal canal (MB2) in maxillary molars compared with visual inspection (VI) and dental operating microscopy (DOM). Methods: Forty extracted human maxillary molars were examined. After the removal of half the crown and access cavity preparation, the existence of MB2 canals was confirmed based on cross-sectional images of each tooth obtained by micro-computed tomographic scanning as the reference standard. Then, the pulp chamber floor was scanned by SS-OCT imaging. Three dentists independently evaluated the SS-OCT images and the pulp chamber floor under VI and DOM for the presence of MB2 canals. The detection rate of MB2 canals for SS-OCT imaging, VI, and DOM was calculated, and statistical analysis was performed. Results: MB2 canals existed in 19 of 40 teeth (47.5%) using micro-CT imaging. Sensitivity of DOM (0.947) was significantly higher than that of SS-OCT imaging (0.632). Specificity of SS-OCT imaging (0.714) was significantly higher than that of DOM (0.333). No statistically significant differences were found for accuracy among the 3 methods. Kappa values of SS-OCT, VI, and DOM were 0.526, 0.417, and 0.326, respectively. Conclusions: SS-OCT imaging is noninvasive, involves no ionizing radiation, and is accurate for the detection of MB2 canals.
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