Morphometric and Anatomical Determination of Location of Foramen Mandibulae and It`s Clinical Significance

Nityanand Jain, Dzintra Kažoka (Scientific Reviewer)

Research output: Contribution to conferencePosterpeer-review

3 Downloads (Pure)


Introduction. Most of the Anatomy literature available describes the Foramen Mandibulae as an entrance to the mandibular canal, which runs obliquely downwards and forward within the Ramus Mandibulae and then runs horizontally forward within the body of the mandible below the roots of the molar teeth with which it communicates with small openings. The foramen transmits the Inferior Alveolar Nerve and its vessels into the Mandibular Canal. Inferior Alveolar Nerve Block is one of the most common anaesthetic procedure followed prior to various submaxillary surgeries. Local Anaesthesia (L.A.) is administered to the nerve at the location of the foramen to achieve desensitization in lower jaw. Clinically, inability to precisely locate the MF is the primary cause of failures of the Inferior Alveolar Nerve Block (IANB). The success of the procedure depends upon the position of the needle tip and foramen at the time of anaesthetic injection. The main complications during this technique are haemorrhage, injury to the neurovascular bundle, fractures, and necrosis of Ramus Mandibulae. The most recurring causes of failure include inapposite location of needle, inaccurate judgement of locus of Mandibular Foramen or by marked variability in its location.

Aim. The aim of this study was to investigate the anatomical location of Foramen Mandibulae (MF) in dry human mandibles for better understanding of its position and for administration of Local Anaesthesia.

Materials and Methods. A total of 51 adult dentulous dried Mandibles were studied by measuring distances using Digital Vernier Caliper and Magnifying glass from Anterior Ramus Border, Posterior Ramus Border, Mandibular Notch and Angulus Mandibulae. The results were tabulated and compared using Student`s t-test and Pearson Correlation.

Results. Comparing the results of Student`s t-test, the MF was found to be positioned at a mean distance of 16.88 ± 2.43 mm on the right side and 17.33 ± 2.24 mm on the left side from the Anterior border of the Ramus Mandibulae. Similarly, it was found to be 12.31 ± 2.49 mm and 11.75 ± 2.47 mm on right and left sides respectively from Posterior Border of Ramus Mandibulae. It was found to be 17.41 ± 3.22 mm and 18.01 ± 3.44 mm and 19.80 ± 3.86 mm and 20.11 ± 4.08 mm on right and left sides from Mandibular Notch and Angulus Mandibulae respectively. When compared using Pearson Correlation, it was found that the foramen is not localized at the midpoint of any of the two axes. Also, it was not localized at the point of cross section of both axes. Rather it lies about 2 – 3 mm posterior from midpoint on anteroposterior axis and 1 mm inferior from midpoint of superoinferior axis.

Conclusions. Unlike Foramen Linguale or others, which have no clinical significance and only anatomical presence, the knowledge of precise location of Foramen Mandibulae is very important to achieve a successful Inferior Alveolar Nerve Block (IANB), prior to dental surgeries in the lower jaw. Hence, MF has a lot of clinical significance and can`t be ignored.
Original languageEnglish
Number of pages1
Publication statusPublished - 9 May 2019
EventXXIV Student International Conference of Morphology Sciences - Institute of Anatomy and Anthropology, Riga Stradins University, Riga, Latvia
Duration: 9 May 20199 May 2019
Conference number: 24


ConferenceXXIV Student International Conference of Morphology Sciences
Internet address

Field of Science*

  • 3.1 Basic medicine

Publication Type*

  • 3.4. Other publications in conference proceedings (including local)


Dive into the research topics of 'Morphometric and Anatomical Determination of Location of Foramen Mandibulae and It`s Clinical Significance'. Together they form a unique fingerprint.

Cite this