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

Autor:	Tolentino ES; Department of Dentistry, State University of Maringá, Maringá, PR, Brazil, Brazil., Amoroso-Silva PA; Department of Restorative Dentistry, State University of Londrina, Londrina, PR, Brazil, Brazil., Alcalde MP; Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of Sao Paulo, Bauru, Brazil, Brazil., Yamashita FC; Department of Dentistry, State University of Maringá, Maringá, PR, Brazil, Brazil., Iwaki LCV; Department of Dentistry, State University of Maringá, Maringá, PR, Brazil, Brazil., Rubira-Bullen IRF; Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of Sao Paulo, Bauru, SP, Brazil., Duarte MAH; Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of Sao Paulo, Bauru, Brazil, Brazil.
Jazyk:	angličtina
Zdroj:	Imaging science in dentistry [Imaging Sci Dent] 2021 Mar; Vol. 51 (1), pp. 27-34. Date of Electronic Publication: 2021 Jan 28.
DOI:	10.5624/isd.20200144
Abstrakt:	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. Competing Interests: Conflicts of Interest: None (Copyright © 2021 by Korean Academy of Oral and Maxillofacial Radiology.)
Databáze:	MEDLINE
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