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Genial Tubercle/Mental Spine

The inner part of symphysis menti possesses four tubercles known as genial tubercles or mental spines set into two pairs: upper and lower. The upper pair connects with genioglossus muscles and lower pair connects with geniohyoid muscles.

Genial Tubercle

Genial Tubercle

Relations

  • Mylohyoid line runs obliquely anterior and inferior, behind the 3rd molar tooth which is nearly 1 cm inferior to the alveolar border towards the symphysis menti below the genial tubercles.
  • Geniohyoid Muscle originates from inferior genial tubercle.
  • Genioglossus Muscle originates from superior genial tubercle.
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