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In Vitro Diagnostic Accuracy and Agreement of Dental Microscope and Cone-Beam Computed Tomography in Comparison With Microcomputed Tomography for Detection of the Second Mesiobuccal Canal of Maxillary First Molars Publisher Pubmed



Khademi A1 ; Saatchi M1 ; Sheikhi M2 ; Soltani MM3 ; Moradi S4
Authors
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Authors Affiliations
  1. 1. Department of Endodontics, Dental Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, 8174673461, Iran
  2. 2. Department of Oral and Maxillofacial Radiology, Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, 8174673461, Iran
  3. 3. Department of Prosthodontics, School of Dentistry, Azad University of Isfahan, Isfahan, 8155139998, Iran
  4. 4. Department of Endodontics, School of Dentistry, Qom University of Medical Sciences, Qom, 3716993456, Iran

Source: Scanning Published:2022


Abstract

Objectives. The percentage of failure of endodontically treated maxillary molars is relatively high; one main reason is that the second mesiobuccal canal (MB2) is missing. Some techniques have been proposed for detection of the MB2. This study was aimed at assessing the diagnostic accuracy and agreement of the dental microscope and cone-beam computed tomography (CBCT) in comparison with microcomputed tomography (micro-CT) for detection of the MB2 of maxillary first molars in vitro. Materials and Methods. This in vitro, experimental study evaluated 71 permanent maxillary first molars that were stored in 100% humidity at room temperature. The teeth were mounted in 9 silicone dental arches to the level of their cementoenamel junction (8 teeth in each arch). The blocks underwent CBCT in a XG3D scanner. Access cavity was then prepared, and the teeth were inspected by a surgical microscope for negotiation of the MB2. Also, micro-CT images were obtained from the teeth to serve as the gold standard. CBCT and micro-CT images were observed by two examiners twice with a 2-week interval. Results. The frequency of the MB2 detected by dental microscope was significantly lower than micro-CT (P<0.001) and CBCT (P=0.008); no significant difference existed between micro-CT and CBCT in this respect. The sensitivity, specificity, positive predictive value, and negative predictive value of CBCT for detection of MB2 were 92.6%, 100%, 100%, and 81%, respectively. Conclusion. CBCT is superior to the dental microscope for detection of the MB2 of maxillary first molars and can be used for this purpose in the clinical setting with adequate accuracy. © 2022 Abbasali Khademi et al.
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