The Jaw Adductor Resultant and Estimated Bite Force in Primates

Table 2

Landmarks for each anterior and posterior resultant vector.

Muscle group attachment	Anterior landmark	Posterior landmark
Temporalis origin	Point where superior temporal line meets post-orbital bar	Point where superior temporal line meets nuchal crest
Temporalis insertion	Anterior corner of masseteric fossa (also anterior end of cristid obliqua of mandible)	Posterior-most point on the hook formed by the tip of the coronoid process
Masseter origin	Anterior zygomatic point	Posterior zygomatic point
Masseter insertion	Point on ventral border of mandibular corpus directly inferior to the anterior corner of the masseteric fossa	Posterior end of angular process of mandible
Medial pterygoid origin	Point where medial pterygoid plate meets lateral pterygoid plate	Posterior end of the inferior border of the lateral pterygoid plate
Medial pterygoid insertion	Anterior-most point within the medial pterygoid fossa	Posterior-most point within the medial pterygoid fossa