Type of Article:  Original Research

Volume 7; Issue 1.1 (January 2019)

Page No.: 6035-6039

DOI: https://dx.doi.org/10.16965/ijar.2018.398


Urvi H. Dave 1, Sunita Gupta 2, Rajesh B. Astik *3.

1 Tutor, Department of Anatomy, GCS Medical College, Ahmedabad, Gujarat, India.

2 Professor and Head, Department of Anatomy, AMC MET Medical College, Maninagar, Ahmedaad, Gujarat, India.

*3 Professor and Head, Department of Anatomy, GMERS Medical College, Himmatnagar, Gujarat, India. 

Corresponding author: Dr. Rajesh B. Astik, Professor and Head, Department of Anatomy, GMERS Medical College, Near Government Polytechnic College, Gadhoda Road, Himmatnagar, Gujarat. 383001. India. Telephone: +91-9687336803; +91-9106387517 E-Mail: astikrajesh@yahoo.co.in


Background: During lower jaw surgeries, inferior alveolar nerve block is given at mandibular foramen level. However, additional foramina are found on medial surface of ramus of mandible, through which branches of inferior alveolar nerve and vessels pass. Location of accessory foramina varies widely which could lead to iatrogenic injuries to neurovascular structures in this region.

Aim and objective: Precise information of variations in number of mandibular foramen and position of these accessory foramina relative to mandibular foramen help dental surgeons to avoid injuries to inferior alveolar nerve and vessels. Hence, this study aimed at analyzing position of accessory foramina osteologically in Gujarat’s population.

Materials and Methods: Three hundred dry mandibles of unknown sexes, and bearing all teeth or intact alveolar margin were included in the study. Numerical variations in the form of accessory foramina were found in 42% of the mandibles; 17% on the right side; 17.66% on the left side; and in 7.33% mandibles accessory foramina were present on both sides. The laterality distribution of accessory mandibular foramina was found to be insignificant statistically. More number of accessory foramina was located antero-superior to mandibular foramen. Retromolar foramina were found in 15% mandibles; however, laterality distribution of retromolar foramina was statistically insignificant.

Conclusion: Latrogenic injuries of inferior alveolar neurovascular structures could better be avoided with precise idea of position of accessory foramina, which may ease the work of dental surgeon.

Key words: Dry mandibles, Mandibular foramen, Anaesthesia, Anatomical variation.


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Cite this article: Urvi H. Dave, Sunita Gupta, Rajesh B. Astik. CROSS SECTIONAL ANALYSIS OF OCCURRENCE OF ACCESSORY MANDIBULAR FORAMINA AND THEIR POSITIONAL VARIATIONS IN DRY MANDIBLES . Int J Anat Res 2019;7(1.1):6035-6039. DOI: 10.16965/ijar.2018.398