Effect of Object Position in Cone Beam Computed Tomography Field of View for Detection of Root Fractures in Teeth with Intra-Canal Posts

Iranian Journal of Radiology : a Quarterly Journal Published by the Iranian Radiological Society
Solmaz ValizadehMohamad Javad Khaeazifard

Abstract

Vertical root fracture (VRF) is a common problem in endodontically treated teeth. Due to its poor prognosis, a reliable technique must be used to make an accurate diagnosis. Cone beam computed tomography (CBCT) has been recently introduced for maxillofacial imaging. Despite the high diagnostic value of this method, metal artifacts resulting from intra-canal posts still make the detection of VRFs challenging. This study aimed to assess the effect of object position in the field of view (FOV) of CBCT on detection of VRFs in teeth with intra-canal posts. The crowns of 60 extracted premolar teeth were cut at the level of cementoenamel junction (CEJ). Root canals were filled with gutta-percha and filling of the coronal 2/3 of the root canals was subsequently removed to fabricate intra-canal cast posts. The teeth were randomly divided into two groups of 30. Fracture was induced in group one using an Instron machine. Group two was considered as the control group with no fracture. All teeth were then randomly positioned and scanned in five different positions starting at the center of the FOV as well as right, left anterior and posterior relative to the center (3, 9, 12, and 6 O'clock) via the New Tom VGI CBCT unit. Two observers evalu...Continue Reading

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Citations

Dec 13, 2017·Dento Maxillo Facial Radiology·Alessiana Helena MachadoKarina Lopes Devito
Aug 29, 2018·Dose-response : a Publication of International Hormesis Society·Feng LiFeng Wu

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