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Comparison of limited- and large-volume cone-beam computed tomography using a small voxel size for detecting isthmuses in mandibular molars

Imaging Science in Dentistry 2021년 51권 1호 p.27 ~ 34
de Souza Tolentino Elen, Amoroso-Silva Pablo Andres, Alcalde Murilo Priori, Yamashita Fernanda Chiguti, Iwaki Lilian Cristina Vessoni, Rubira-Bullen Izabel Regina Fischer, Duarte Marco Antonio Hungaro,
소속 상세정보
 ( de Souza Tolentino Elen ) - State University of Maringa Department of Dentistry
 ( Amoroso-Silva Pablo Andres ) - State University of Londrina Department of Restorative Dentistry
 ( Alcalde Murilo Priori ) - University of Sao Paulo Bauru School of Dentistry Department of Operative Dentistry, Endodontics and Dental Materials
 ( Yamashita Fernanda Chiguti ) - State University of Maringa Department of Dentistry
 ( Iwaki Lilian Cristina Vessoni ) - State University of Maringa Department of Dentistry
 ( Rubira-Bullen Izabel Regina Fischer ) - University of Sao Paulo Bauru School of Dentistry Department of Surgery, Stomatology, Pathology and Radiology
 ( Duarte Marco Antonio Hungaro ) - University of Sao Paulo Bauru School of Dentistry Department of Operative Dentistry, Endodontics and Dental Materials

Abstract


Purpose: This study was performed to compare the ability of limited- and large-volume cone-beam computed tomography (CBCT) to display isthmuses in the apical root canals of mandibular molars.

Materials and Methods: Forty human mandibular first molars with isthmuses in the apical 3 mm of mesial roots were scanned by micro-computed tomography (micro-CT), and their thickness, area, and length were recorded. The samples were examined using 2 CBCT systems, using the smallest voxels and field of view available for each device. The Mann-Whitney, Friedman, and Dunn multiple comparison tests were performed (α=0.05).

Results: The 3D Accuitomo 170 and i-Cat devices detected 77.5% and 75.0% of isthmuses, respectively (P>0.05). For length measurements, there were significant differences between micro-CT and both 3D Accuitomo 170 and i-Cat (P<0.05).

Conclusion: Both CBCT systems performed similarly and did not detect isthmuses in the apical third in some cases. CBCT still does not equal the performance of micro-CT in isthmus detection, but it is nonetheless a valuable tool in endodontic practice.

키워드

Cone-Beam Computed Tomography; Endodontics; Molar; X-Ray Microtomography

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