Evaluation of the relationship between mylohyoid ridge and mandibular morphometry

Şen S., Girit M. N., Ansen G., Pençe K. B., Yüzbaşıoğlu N.

23rd National Anatomy Congress, Ankara, Turkey, 11 - 15 October 2023, vol.54, no.99, pp.60

  • Publication Type: Conference Paper / Summary Text
  • Volume: 54
  • City: Ankara
  • Country: Turkey
  • Page Numbers: pp.60
  • Istanbul Medipol University Affiliated: Yes


Objective: The mylohyoid line (linea obliqua interna/ mylohyoid ridge), the attachment site of the mylohyoid muscle, is a bony structure that can be both palpated and visualized radiologically in the posterior mandible. The aim of this study was to determine the relationship between mylohyoid line (ML) and mandibular morphometry to guide surgical interventions in the oral region. Methods: The shortest and longest depths of the ML, the distances between the depth of the ML and the upper and lower edges of the mandible, the distances between the top of the ML and the upper and lower edges of the mandible, the distances between the mandibular canal and the depth of the ML, and the distances between the mandibular canal and the top of the ML were measured from the point between the second molar and the first molar tooth root using RadiAnt radiological examination program on Cone Beam Computed Tomography images. Results: In total, 29 right (48.3%) and 31 left (51.7%) hemi-mandibles were evaluated in 60 cases, 24 females (40%) and 36 males (60%). Mean longest depth of ML: 7.34±1.71 mm, ML shortest depth 3.65±0.95 mm, ML to mandibular lower edge distance 12.60±1.54 mm, ML to mandibular upper edge distance 13.79±2.69 mm, ML upper point to mandibular lower edge distance 18. 76±2.37 mm, LM upper point-mandibular upper edge distance 7.71±2.19 mm, ML upper point-mandibular canal distance 9.16±1.95 mm, ML depthmandibular canal distance 3.92±0.87 mm. There was no statistically significant difference between the measured parameters according to gender and hemi-mandibular side evaluated. Conclusion: Knowledge of the relationship between the mylohyoid line and mandibular morphology may guide clinicians as a safe landmark during interventions in the posterior mandibular region.

Keywords: mylohyoid line, mylohyoid ridge, mandibular morphology, anatomy, CBCT