The MB3 canal in maxillary molars: a micro-CT study

Ordinola‐Zapata, Ronald; Martins, Jorge N.R.; Plascencia, Hugo; Versiani, Marco Aurélio; Bramante, Clóvis Monteiro

doi:10.1007/s00784-020-03284-7

Cited by 21 publications

(29 citation statements)

References 73 publications

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“…In vitro studies using clearing, exploring, CBCT, or micro-CT, reported three-canaled MBRs to occur in 0.6%–4.2% in maxillary second molars, out of which the in vitro study done in Indian population using CBCT, reported an incidence of 0.9%[ 5 ] Ex vivo studies using micro-CT imaging systems reported a higher percentage frequency of MB3 canals in maxillary second molars (0.8%–7.1%),[ 16 ] when compared to studies using the CBCT method (0.2%–1.8%)[ 5 16 ] or using magnification and ultrasonics (1.82%). [ 17 ] Clinically, only five such case reports have been published till date, with MB3 in maxillary second molars.…”

Section: Discussionmentioning

confidence: 99%

A case report on endodontic management of the rarest Vertucci's Type VIII configuration in maxillary second molar with three mesiobuccal canals

et al. 2021

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Anatomic variations in mesiobuccal root (MBR) of maxillary molars are common. This variation is found to be more common in maxillary first molars as compared to second molars. However, finding three independent mesiobuccal (MB) canals in the MBR of maxillary molars is clinically a rare entity. With the use of magnification, illumination, and cone-beam computed tomography, combined with the skill of the operator, there is an increased possibility of detecting such additional canals. The present case report describes the successful clinical management of a second molar in a 58-year-old female patient having three MBR canals (MB1, MB2, and MB3) with a Vertucci's Type VIII canal configuration and an almost obliterated pulp chamber. The canals were prepared using hand and rotary instruments, followed by obturation. Very few such cases have been documented clinically in the literature.

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Section: Discussionmentioning

confidence: 99%

A case report on endodontic management of the rarest Vertucci's Type VIII configuration in maxillary second molar with three mesiobuccal canals

et al. 2021

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“…Failure to detect extra canals creates a higher probability for posttreatment apical periodontitis (7,8). The mesiobuccal (MB) root of maxillary molars has an oval cross-sectional shape with a larger diameter in buccolingual direction than mesiodistal direction and commonly presents two root canals, named MB1 and MB2, with a high incidence of fine anatomical structures including intercanal communications, loops, accessory canals, and apical ramifications (9). In fused teeth, the orifices of extra canals may be located at different levels, similar to non-fused teeth.…”

Section: Introductionmentioning

confidence: 99%

“…Over the past 30 years, many methodologies have been described to study the internal and external configuration of maxillary molars using radiographic analysis (9), staining and cleaning, spiral computed tomographic imaging, and cone beam computed tomographic imaging. However, these methods are based on 2D images such as radiographic analysis (2).…”

Section: Introductionmentioning

confidence: 99%

Micro-Computed Tomography Analysis of Root Canal Orifices in Maxillary Fused Molars

Toplu¹

2022

Turk Endod J

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Purpose: This study outlines a two-dimensional analysis of root canal orifices in maxillary second molars showing different types of root fusion.Methods: A total of 150 extracted fused maxillary second molar teeth with mature roots free of fractures, or deep caries extending to root dentine, were scanned on a micro-computed tomography (micro-CT) device (SkyScan 1172, Bruker-micro-CT, Kontich, Belgium) at 9 µm (pixel size), 100 kV, 100 µA. Specimens were classified according to the fusion type. In each specimen's axial slices of the pulp chamber floor, the area, perimeter, roundness, major diameter, and minor diameter values were measured. One-way analysis of variance test followed by post hoc Tukey test was performed to evaluate the area, perimeter, roundness, major diameter, minor diameter, and interorifice distances between different fusion types. Results:The perimeter and area of the mesiobuccal 2 (MB2) canal orifice were statistically smaller than other orifices in all fusion types (p< 0.05). Major and minor diameter values of MB2 were also significantly smaller than that of mesiobuccal (MB) in fusion types 1 to 4 (p< 0.05), apart from type 6, in which major and minor diameters of MB, MB2, and distobuccal orifices were similar (p> 0.05). The largest area and perimeter values were measured in the palatal (P) canal orifice irrespective of the fusion type (p< 0.05). Conclusion:The fusion type does not affect the area and minor diameter of the canal orifices. All morphological parameters examined were similar for MB and MB2 canal orifices regardless of the fusion type.

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“…Combined with software rendering, it is a non-destructive, high-resolution, 3D imaging technique that can precisely depict small morphological structures (< 20 µm) in teeth thus making it superior to other ex vivo methods and therefore, suggested as a gold standard in the field [ 9 – 11 ]. Micro-CT is increasingly used for investigation of epidemiological questions to provide the dentist with necessary information that is a prerequisite for successful endodontic treatment [ 12 – 14 ].…”

Section: Introductionmentioning

confidence: 99%

Automated segmentation and description of the internal morphology of human permanent teeth by means of micro-CT

2021

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High-resolution micro-computed tomography is a powerful tool to analyze and visualize the internal morphology of human permanent teeth. It is increasingly used for investigation of epidemiological questions to provide the dentist with the necessary information required for successful endodontic treatment. The aim of the present paper was to propose an image processing method to automate parts of the work needed to fully describe the internal morphology of human permanent teeth. One hundred and four human teeth were scanned on a high-resolution micro-CT scanner using an automatic specimen changer. Python code in a Jupyter notebook was used to verify and process the scans, prepare the datasets for description of the internal morphology and to measure the apical region of the tooth. The presented method offers an easy, non-destructive, rapid and efficient approach to scan, check and preview tomographic datasets of a large number of teeth. It is a helpful tool for the detailed description and characterization of the internal morphology of human permanent teeth using automated segmentation by means of micro-CT with full reproducibility and high standardization.

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The MB3 canal in maxillary molars: a micro-CT study

Cited by 21 publications

References 73 publications

A case report on endodontic management of the rarest Vertucci's Type VIII configuration in maxillary second molar with three mesiobuccal canals

A case report on endodontic management of the rarest Vertucci's Type VIII configuration in maxillary second molar with three mesiobuccal canals

Micro-Computed Tomography Analysis of Root Canal Orifices in Maxillary Fused Molars

Automated segmentation and description of the internal morphology of human permanent teeth by means of micro-CT

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