Importance of the resolution of the CBCT units for detection of vertical root fractures: a clinical case report

Autores: Borja Zabalegui Roberto Aza Jon Haitz Legarreta Gorroño José María Malfaz

Fecha: 01.07.2015

Endodoncia


Abstract

Radiology is an essential tool for making an accurate and reliable diagnosis in Endodontics. Cone-beam computed tomography (CBCT) has been introduced in the past decade in the area of 3D radiological diagnosis. Endodontics requires the higher level of image quality and resolution, because the anatomical structures involved are very small. One of the most extreme diagnostic examples is the presence of vertical root fractures (VRFs) in teeth with previous endodontic treatment. This clinical entity is an important diagnostic 3D challenge, due to the need for high resolution of the CBCT apparatus, the acquisition of images with the least amount of artifacts and noise to obtain pictures of more quality possible. This article aims to discuss and highlight the degree of image quality, resolution and required voxel size, in terms of computed tomography of cone beam, with clinical dental diagnostic purposes.
Case report: A clinical case was selected, in which the presence of a VRF was suspected subsequent to the clinical examination, conventional 2D radiographic examination, and the CBCT scan. Once the tooth is extracted, two new CBCT exams were carried out with two different clinical CBCT units, for further comparison among themselves and with the scanned image using laboratory equipment for computerized micro-tomography (μCT).
Discussion: The parameters needed to obtain a 3D image quality in the field of endodontics are analyzed and described. The quality of image provided by different CBCT units, taking as a reference the study with micro-CT images, is compared.
Key learning points: 1) Not all CBCT units have the same characteristics and, therefore, not all are suitable for clinical diagnosis in endodontics. 2) The high image quality and excellent resolution required in endodontics are only provided by CBCT units with a voxel size ≤ 100 μm.

BIB_text

@Article {
title = {Importance of the resolution of the CBCT units for detection of vertical root fractures: a clinical case report},
journal = {Endodoncia},
pages = {106-120},
number = {3},
volume = {33},
keywds = {

Cone-beam computed tomography; CBCT; Micro-tomography; Vertical root fracture; Voxel; Noise; Artifacts; Resolution; Image quality


}
abstract = {

Radiology is an essential tool for making an accurate and reliable diagnosis in Endodontics. Cone-beam computed tomography (CBCT) has been introduced in the past decade in the area of 3D radiological diagnosis. Endodontics requires the higher level of image quality and resolution, because the anatomical structures involved are very small. One of the most extreme diagnostic examples is the presence of vertical root fractures (VRFs) in teeth with previous endodontic treatment. This clinical entity is an important diagnostic 3D challenge, due to the need for high resolution of the CBCT apparatus, the acquisition of images with the least amount of artifacts and noise to obtain pictures of more quality possible. This article aims to discuss and highlight the degree of image quality, resolution and required voxel size, in terms of computed tomography of cone beam, with clinical dental diagnostic purposes.
Case report: A clinical case was selected, in which the presence of a VRF was suspected subsequent to the clinical examination, conventional 2D radiographic examination, and the CBCT scan. Once the tooth is extracted, two new CBCT exams were carried out with two different clinical CBCT units, for further comparison among themselves and with the scanned image using laboratory equipment for computerized micro-tomography (μCT).
Discussion: The parameters needed to obtain a 3D image quality in the field of endodontics are analyzed and described. The quality of image provided by different CBCT units, taking as a reference the study with micro-CT images, is compared.
Key learning points: 1) Not all CBCT units have the same characteristics and, therefore, not all are suitable for clinical diagnosis in endodontics. 2) The high image quality and excellent resolution required in endodontics are only provided by CBCT units with a voxel size ≤ 100 μm.


}
date = {2015-07-01},
year = {2015},
}
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