Bifid mandibular canal – a case report

Iliescu, Vlad Ionuţ; Cismaş, Suzana Carmen; Truţă, Ramona Ionela; Gherghiţă, Ovidiu Romulus; Nimigean, Victor; Nimigean, Vanda Roxana

doi:10.47162/rjme.62.2.34

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…The presence of the MnF, the MC and the accessory MCs in the posterior mandible requires special attention during all surgical procedures performed at this level [12,[32][33][34].…”

Section:  Discussionmentioning

confidence: 99%

Morphometric study for the localization of the mental foramen in relation to the vertical reference plane

Nimigean

Gherghiţă²,

Păun³

et al. 2022

Rom J Morphol Embryol

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Background: The mental foramen (MnF) is the anatomic landmark where the mental neurovascular bundle exits the mandible. Precisely determining the position of the MnF is necessary before all dentoalveolar therapeutic procedures performed in the mandibular premolar area. Materials and Methods: For the study, we performed two ex vivo direct morphometric determinations on dry human dentate and edentate mandibles, and two in vivo imaging morphometric determinations through cone-beam computed tomography (CBCT) and orthopantomography (OPG) in dentate human patients. The following landmarks were used to locate the MnF: the distance between the MnF and the superior border of the mandible (MnF-SB), the distance between the MnF and the inferior border of the mandible (MnF-IB), and the position of the MnF in relation to the root apices of the posterior teeth. The results obtained from these data were processed statistically using the analysis of variance (ANOVA). Results: By direct morphometry on dentate mandibles, the MnF was situated closer to the IB and by direct morphometry on completely edentulous mandibles, the MnF was located closer to the SB. In both direct morphometry studies, the MnF transverse diameter was larger than the vertical one, with the MnF having an oval shape. ANOVA for both direct morphometry studies showed that the distances MnF-IB and MnF-SB significantly vary statistically with interactions and depending on age (p<0.00001). The vertical diameter of the MnF significantly varies statistically depending on age, interactions and between studies, and its transverse diameter varies statistically significantly with interactions and depending on age (p<0.00001). According to OPG and CBCT imaging studies, the MnF was located closer to the IB, and the transverse diameter of the MnF was larger than the vertical diameter; such results are similar to the direct morphometry study performed on dry dentate human mandibles. Regarding the position of the MnF in relation to the root apices, it was most frequently located inferior to the root apices in 79.45% of cases, in 19.23% of cases it was located at the root apices level and in 1.31% of cases it was located superior (coronal) to the root apices. ANOVA for both imaging morphometry studies showed that the MnF-IB distance varies statistically significantly with the interactions, the study, the sex of the patients and their age, the MnF-SB distance varies statistically significantly with the interactions, the study and the patients' age (p<0.05), and the MnF diameters vary statistically significantly with interactions and patient age (p<0.05). Conclusions:The results of this study can help dental practitioners in improving dentoalveolar surgery procedures in the posterior mandible.

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“…The presence of the MnF, the MC and the accessory MCs in the posterior mandible requires special attention during all surgical procedures performed at this level [12,[32][33][34].…”

Section:  Discussionmentioning

confidence: 99%

Morphometric study for the localization of the mental foramen in relation to the vertical reference plane

Nimigean

Gherghiţă²,

Păun³

et al. 2022

Rom J Morphol Embryol

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“…Наличие раздвоенного канала нижней челюсти никак себя не проявляет клинически, но может приводить к следующим осложнениям при хирургических вмешательствах (удалении зуба, имплантации, заборе костной ткани): обильное кровотечение, затруднения при обезболивании, парестезия, травматическая неврома, дегенерация внутрикостных нервов, пери-невральное распространение опухоли [14,[33][34][35][36][37].…”

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Applied anatomy of mandibular canal

Grigoryants,

Khatypova,

Makalish

et al. 2023

Humans and their Health

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The mandibular canal (canalis mandibulae) runs in the thickness of the mandible from the mandibular foramen (foramen mandibulae) to the mental foramen (foramen mentale). The knowledge of its topography and relations with the dental root apices is of great practical importance for the prevention of iatrogenic injuries of the inferior alveolar neurovascular bundle during endodontic and orthodontic treatment and during a number of surgical procedures, such as extraction, resection of the apices of the roots of the teeth, cystectomy, removal of intraosseous neoplasms, as well as during conduction anesthesia. The purpose of this work is to summarize information about the variants of the structure and topography of the mandibular canal. The article considers variants of the structure, course, and topography of the mandibular canal, including in cases of adentia, revealed on the basis of various methods of research. In addition to the use of natural preparations (cuts of the lower jaws), modern radiation research methods, such as radiography, computed tomography and cone-beam computed tomography, are widely used to study the topography of the mandibular canal. The mandibular canal is characterized by significant variability in its course and complex relationships with surrounding structures. The most common variation in the structure of the canal is its bifurcation, which is associated with the peculiarities of embryonic development and is of great clinical importance. Up to date, there are several classifications of variants of its structure that can be used in clinical practice. Further accumulation and systematization of data on its anatomical and topographic features are important for the diagnosis and implementation of therapeutic manipulations in this area.

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