The Topography of the Mandibular Foramen – Review of the Specialised Literature

Gherghiţă, Ovidiu Romulus; Nimigean, Vanda Roxana; Moraru, Simona Andreea; Poll, Alexandru; Nimigean, Victor

doi:10.37897/rjs.2018.1.4

Cited by 1 publication

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“…As shown in a recent literature review [ 3 ], Khan & Ansari (2016) [ 23 ] have mentioned that the absence of specific bone landmarks, alongside variations in height and width of the mandibular ramus are causes of failure of the inferior alveolar nerve anesthesia.…”

Section: ⧉ Discussionmentioning

confidence: 99%

“…According to the same literature review [ 3 ], Sultana et al (2016) [ 22 ] show that the clinical success rate of the inferior alveolar nerve anesthesia is quite low due to the imprecise location of the MF. Through their investigations, Sultana et al (2016) [ 22 ] located the MF thusly: 17.69±2.70 mm from the anterior margin of the mandibular ramus on the right side and 17.94±2.73 mm on the left side, 11.39±1.93 mm from the posterior margin of the mandibular ramus on the right side and 11.40±2.01 mm on the left side, 22.90±3.57 mm from the superior margin of the mandibular ramus on the right side and 22.39±3.18 mm on the left side, 23.87±4.52 mm from the mandibular angle on the right side and 23.66±4.36 mm on the left side, and 17.9±3.57 mm from the third molar on the right side 17.6±3.77 mm on the left side.…”

Section: ⧉ Discussionmentioning

confidence: 99%

“…The position of the MF varies and depends on the dimensions of the mandibular ramus. Studies have shown the position of the MF varies from person to person, between different age groups in the same population, and even between the left and right sides of the same individual [ 3 ]. Scientific evidence also indicates that inferior alveolar nerve block has a higher failure rate than other anesthetic procedures carried out by the dentist [ 4 ].…”

Section: ⧉ Introductionmentioning

confidence: 99%

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Direct and imaging morphometry for the localization of the mandibular foramen (MF) in dentate and edentulous human subjects

Gherghiţă

Nimigean²,

Csiki³

et al. 2021

Rom J Morphol Embryol

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Background : The mandibular foramen (MF) is the anatomic landmark where the interior alveolar nerve enters the mandibular ramus, and the area of choice where anesthesia of this nerve is performed. The position of the MF can vary, and accurately establishing its location and topographic variations is of great importance for the successful anesthesia of the inferior alveolar nerve. Materials and Methods : We carried out two morphometric ex vivo studies concerning the topography of the MF, on dry human mandibles coming from dentate and completely edentulous human subjects of known age and gender and an in vivo morphometric study, through cone-beam computed tomography (CBCT) scans, concerning the topography of the MF in human subjects having Kennedy Class I mandibular edentulism. The morphological characteristics we investigated were: the distance between the MF and the anterior margin of the mandibular ramus (MF–AM distance), the distance between the MF and the posterior margin of the mandibular ramus (MF–PM distance), the distance between the MF and the inferior margin of the mandibular ramus (MF–IM distance), the distance between the MF and the temporal crest of the mandibular ramus (MF–TC distance), the distance between the MF and the superior margin of the mandibular ramus (MF–SM distance), and the vertical and transverse diameters of the MF. The results were statistically processed in Stata/MP13 software package using Student’s t -test and two-way analysis of variance (ANOVA). Results : Through direct morphometry on dentate dry human mandibles, the MF–AM and the MF–SM distances showed statistically significant differences for age, gender and for interactions, while the MF–PM and MF–IM distances showed statistically significant differences for age and for interactions. In the case of the MF–TC distance, the only significant difference observed was for the gender. No statistical significance was found for side, age, gender, and interactions in the cases of MF vertical and transverse diameters. Through direct morphometry on completely edentulous dry human mandibles, the MF–PM and MF–SM distances showed statistically significant differences for age, gender and for interactions, while the MF–AM, MF–IM, and MF–TC distances, as well as the MF vertical and transverse diameters showed statistically significant differences for age and for model (interactions). The results showed that MF is 2 mm closer to the anterior margin of the mandibular ramus after having lost teeth. Through imaging morphometry, the MF–PM distance and the vertical diameter of MF showed statistically significant differences for age, gender and for interactions, while the MF–AM, MF–IM, MF–SM and MF–TC distances, as well as the transverse diameter of MF showed statistically significant differences for age and for interactions. Comparing the results obtained by the three studies, we found no statistically significant diff...

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Section: ⧉ Discussionmentioning

confidence: 99%