Produção Nacional
Comparison of limited- and large-volume cone-beam computed tomography using a small voxel size for detecting isthmuses in mandibular molars
2021; Volume: 51; Issue: 1 Linguagem: Inglês
10.5624/isd.20200144
ISSN2233-7830
AutoresElen de Souza Tolentino, Pablo Amoroso‐Silva, Murilo Priori Alcalde, Fernanda Chiguti Yamashita, Lílian Cristina Vessoni Iwaki, Izabel Régina Fischer Rubira-Bullen, Marco Antônio Húngaro Duarte,
Tópico(s)Advanced X-ray and CT Imaging
ResumoThis 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.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).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).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.
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