Radiographic Considerations for the Regional Anatomy in the Posterior Mandible

Yashar, Natasha; Engeland, Christopher G.; Rosenfeld, Alan L.; Walsh, Timothy P.; Califano, Joseph V.

doi:10.1902/jop.2011.110076

Cited by 12 publications

(9 citation statements)

References 22 publications

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“…The mean thickness of our measurements was similar to that obtained in other studies, such as the one performed by Levine [20][21][22] The results related to the thickness of the IDC demonstrated that, in all locations, the radiologically measured thickness was greater than the anatomically measured one (mean value of 0.3 mm).…”

Section: Discussionsupporting

confidence: 89%

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Reliability of cone beam computed tomography in locating and measuring the mandibular canal for planning of surgical techniques in the mandibular body

Azcárate-Velázquez

Bertos-Quilez

Marmesat-Guerrero³

et al. 2015

Revista Española de Cirugía Oral y Maxilofacial (English Editio

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Available online xxx Keywords:Lower dental nerve Anatomy Cone bean computed tomography Bone graft of mandibular body a b s t r a c t Aim: The aim of this study was to determine the reliability of cone beam computed tomography to locate and take measurements of the mandibular canal, as well as the vestibular bone wall, in the planning of the bone graft surgery in the mandibular body.Material and methods: A total of 11 mandibles from fresh cadavers were studied (22 hemimandibles, half of them with teeth). A CBTC and a surgical procedure for the lateralization of the lower dental nerve were performed with the aim of measuring the thickness of the vestibular table and the mandibular canal (MC) or lower dental nerve at 5, 15, and 25 mm from the most posterior position of the mentonian hole. Results:The results obtained in the study indicate that CBTC, being the best diagnostic tool currently available, still appears to be unreliable when compared to actual results. This discrepancy is a mean of 1.15 mm as regards the thickness of the vestibular bone wall that covers the MC, and a mean of 0.3 mm in relation to the thickness of the lower dental nerve.Discussion: It is important to know and assess these discrepancies in view of the multitude of surgical procedures that can be performed in this area, and in the vicinity of the lower dental nerve.Padrós E, et al. Fiabilidad del uso de la tomografía computarizada de haz cónico en la localización y medida del conducto mandibular en la planificación de técnicas quirúrgicas en el cuerpo mandibular. Rev Esp Cir Oral Maxilofac. 2015. http://dx.Discusión: Conocer y valorar estas discrepancias es importante dada la multitud de procedimientos quirúrgicos que se pueden realizar en esta zona, y la vecindad con el nervio dentarioinferior.bajo la licencia CC BY-NC-ND (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Section: Discussionsupporting

confidence: 89%

“…[20][21][22] In our study, we did not find differences in relation to the thickness of the vestibular table based on gender or location. [20][21][22] In our study, we did not find differences in relation to the thickness of the vestibular table based on gender or location.…”

Section: Discussioncontrasting

confidence: 65%

Reliability of cone beam computed tomography in locating and measuring the mandibular canal for planning of surgical techniques in the mandibular body

Azcárate-Velázquez

Bertos-Quilez

Marmesat-Guerrero³

et al. 2015

Revista Española de Cirugía Oral y Maxilofacial (English Editio

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“…Our data showed that BH dimensions were higher in males than in females, while BH dimensions decreased from premolar to molars. Similarly, a significant difference in bone height between males and females has been reported in the dentulous 1,2 , the edentulous 7 , and both types of individual (Table 8) [3][4][5]8,9 . On the other hand, Alrahaimi et al found no significant difference between males and females regarding distances from the alveolar crest to the superior position of the mandibular canal in a study on jaws with single missing teeth 6 .…”

Section: Discussionmentioning

confidence: 66%

CT-based dentulous mandibular alveolar ridge measurements as predictors of crown-to-implant ratio for short and extra short dental implants

Meggiorin

Ferrarese

Lupi

et al. 2020

Sci Rep

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The purpose was to predict the crown-to-implant ratio variation in the edentulous posterior mandibles rehabilitated with short dental implants. Hence, vertical and horizontal dimensions of dentulous posterior mandibles in a sample of 18- to 25-year-olds were measured, and correlations of these dimensions with sex and site were investigated. Mandibular computed tomography scans from 100 subjects were considered. Vertical and horizontal bone and tooth measurements were taken at the sites of the second premolar (PM), and the mesial and distal roots of the first and second molars (M1m, M1d, M2m and M2d, respectively). A hypothetical crown-to-implant ratio (C/I R) was calculated assuming the insertion of short and extra short implants (5, 6 or 7 mm), at 1.5 mm from the inferior alveolar canal, maintaining the position of the existing occlusal plane. All vertical bone dimensions decreased from the PM to the M2d. Width measurements increased from the mesial (PM) to the distal sites (M1m, M1d, M2m and M2d). Males had significantly greater vertical and horizontal measurements than females at all sites. The mean C/I R was higher than 2 for all sizes of implant. The C/I R was lower for the second molar than for the second premolar, while it was similar for the first molar and the second premolar. Males had a higher C/I R than females. Computed tomography can be used to study the anatomical features of alveolar bone, and to predict some clinical aspects of prosthetic rehabilitation with implants, such as the crown-to-implant ratio in conditions of serious bone atrophy.

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“…These reports suggest that BMCs are more common than anticipated, their presence being confirmed using volumetric imaging (Claeys & Wackens, 2005). Nevertheless, one study that mapped the course of 390 mandibular canals using CT found no indications of a BMC (Yashar, Engeland, Rosenfeld, Walsh, & Califano, 2012 Among the first attempts at classification were those by Nortje, Farman, and de V Joubert 1977, Nortje, Farman, and Grotepass (1977),…”

Section: Dry Mandible/mri (%)mentioning

confidence: 99%

The clinical anatomy of accessory mandibular canal in dentistry

Ngeow

Chai

2020

Clinical Anatomy

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The mandibular canal is a conduit that allows the inferior alveolar neurovascular bundle to transverse the mandible to supply the dentition, jawbone and soft tissue around the gingiva and the lower lip. It is not a single canal but an anatomical structure with multiple branches and variations. The branches are termed accessory, bifid or trifid canals depending on their number and configuration. A bifid mandibular canal is an anatomical variation reported more commonly than the trifid variant. Because of these variations, it is of the utmost importance to determine the exact location of the mandibular canal and to identify any branches arising from it prior to performing surgery in the mandible. This article reviews the prevalence, classification and morphometric measurements of these accessory mandibular canals, emphasizing their clinical significance.

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Radiographic Considerations for the Regional Anatomy in the Posterior Mandible

Abstract: Given the high degree of variability in mandibular bone volume surrounding the IAN and the position of the IAN, the use of CT scans should be considered for surgical procedures in the posterior mandible when there is risk of injury to the IAN.

Cited by 12 publications

References 22 publications

Reliability of cone beam computed tomography in locating and measuring the mandibular canal for planning of surgical techniques in the mandibular body

Reliability of cone beam computed tomography in locating and measuring the mandibular canal for planning of surgical techniques in the mandibular body

CT-based dentulous mandibular alveolar ridge measurements as predictors of crown-to-implant ratio for short and extra short dental implants

The clinical anatomy of accessory mandibular canal in dentistry

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