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Proposed classification of auriculotemporal nerve, based on the root system.

Iulian Komarnitki1, Jacek Tomczyk2, Bogdan Ciszek1

  • 1Department of Descriptive and Clinical Anatomy, Medical University of Warsaw, Warsaw, Poland.

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Summary

This study proposes a new classification for the auriculotemporal nerve (ATN) root system based on topography. The findings aim to standardize nomenclature for surgeons and dentists, addressing inconsistencies in current literature.

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Area of Science:

  • Anatomy
  • Neuroscience
  • Surgical Anatomy

Background:

  • The auriculotemporal nerve (ATN) exhibits variable root systems, with one to five roots reported.
  • Inconsistent nomenclature (roots, connecting branches, branches) complicates the study of ATN topography.
  • Existing classifications lack standardization, hindering clear communication and application.

Purpose of the Study:

  • To propose a novel, standardized classification system for the auriculotemporal nerve (ATN) root system.
  • To address the nomenclature inconsistencies in describing ATN topography within the infratemporal fossa.
  • To provide a practical tool for surgeons and dentists by organizing known ATN variants.

Main Methods:

  • Analysis of 80 specimens (40 adult, 40 fetal) to examine ATN topography.
  • Classification based on the number of roots, root division patterns, and interradicular fiber configuration.
  • Evaluation of fetal specimens from 18 weeks gestational age to assess early development.

Main Results:

  • A new classification system for the auriculotemporal nerve (ATN) root system was developed.
  • The classification accounts for variations in root number, division, and fiber configuration.
  • The ATN is fully developed by 18 weeks of gestation.

Conclusions:

  • The proposed classification offers a standardized approach to ATN topography, resolving nomenclature issues.
  • This system effectively organizes previously described ATN variants.
  • The classification serves as a valuable tool for anatomical studies and clinical practice in dentistry and surgery.