CBCT for the assessment of second mesiobuccal (MB2) canals in maxillary molar teeth: effect of voxel size and presence of root filling

Abstract

CBCT was associated with higher mean values of specificity and sensibility than radiographic examination for the detection of MB2 canals. When endodontic retreatment is necessary removal of the root filling prior to the CBCT examination eliminates artefacts, thereby permitting the use of the 0.3-mm voxel protocol that has good diagnostic performance and lower radiation dose.

Clinical Endodontic Applications of Cone Beam-Computed Tomography in Modern Dental Practice

“…In-vivo vertical VRF that could not be visualized on PA radiographs were diagnosed with CBCT [20]. Mesiolingual canals of maxillary molars (MB2) were detected with higher specificity and sensitivity using CBCT than PA radiograph [21]. Not surprisingly, one study found that additional information obtained from CBCT led endodontists to modify their treatment plan in approximately 62% of the cases [22].…”

“…The presence of artifacts caused by root canal filling materials resulted in inaccuracies of VRF and MB2 detection by CBCT [21] [25]. It is recommended that when endodontic retreatment is necessary to remove the root filling prior to the CBCT examination.…”

“…It is recommended that when endodontic retreatment is necessary to remove the root filling prior to the CBCT examination. This can help eliminating artifacts, thereby permitting the use of the larger voxel protocol that has good diagnostic performance and lower radiation dose [21]. However, this recommendation may not be practical in instances when CBCT becomes the deciding factor whether retreatment should start or not.…”

Validation of cone beam computed tomography as a clinical imaging method for dentin thickness measurement in the danger zone of mandibular molars

“…Several methods have been used to evaluate RCS, which could assess the risk of tearing and perforation at the furcation area, such as histological sections 9 , serial sections 10 , clearing 11 , scanning electron microscopy 12 , stereomicroscope 13 , radiographs 14 , silicone impressions of the root canal 15 , CBCT 16,17 , and micro computed tomography (micro--CT) 18 . Among clinical methods, which can be used in vivo, CBCT is a promising one, since it allows tridimensional evaluation 19,20 . For in vitro studies, both micro-CT and stereomicroscope images are used for gold standard references in RCS evaluations [21][22][23] .…”

Análisis mediante CBCT de la configuración anatómica de los orificios de la raíz mesial del primer molar maxilar en población colombiana / CBCT Analysis of the Anatomical Configuration of First Maxillary Molar Mesial Root Holes in Colombian Population

“…En la actualidad, los avances tecnológicos permiten contar con el apoyo de las tomografías computarizadas de haz de cono (CBCT, por su sigla en inglés de cone beam computed tomography) (7)(8)(9)(10)(11), que muestran un alto grado de precisión al proporcionar información anatómica en todos los planos del espacio y facilitar la identificación de conductos radiculares (12)(13)(14). Las CBCT han cobrado gran relevancia, debido a la fuerte correlación entre los datos adquiridos mediante CBCT y los de histología (13).…”