Mandible Flashcards
What is the mandible
This is the lower jaw, it articulates through it’s condyles with the temporal
Where is the mandible body or corpus
This is the thick bony part of the mandible which anchors the teeth - Can be used for sexing
Where is the mental foramen
This is located on the lateral surface of the body
Where is the external oblique line
This is a weak eminence that passes from the root of the ramus to the rear of the mental foramen
Where is the retro molar or extramolar sulcus
This is the gap seen between the root of the ramus and the third molar
Where is the mylohyoid line
This crosses the medial surface of the corpus, beginning near the alveolar margin running anteroinferiorly
Where is the submandibular fossa
This is the hollow beneath the mylohyoid line
Where is the sublingual fossa
This is above the mylohyoid line
Where is the mandibular torus
This is the thickening of the alveolar margin
Where is the mandibular symphysis
This refers to the midline surfaces of the unfused right and left mandibular halves
Where is the mental spine or genial tubercles
These are the inferior margin on the posterior surface of the corpus in the midline
Where is the digastric fossae
These are the pair of roughened depressions on the inferior surface of the corpus at the midline
Where is the mental protuberance or mental eminence
This is the triangular eminence making up the chin (Can be used for sexing)
Where is the ramus
This is the vertical part of the mandible (Can be used for sexing)
Where is the mandibular condyle
This is the large rounded articular prominence on the top corner of the ramus
Where is the condylar neck
This is just under the condyle
Where is the coronoid process
This is the thin triangular protuberance at the top of the ramus, anterior to the condyle - can be used for sexing
Where is the mandibular notch
This is the notch between the condyle and the coronoid process
Where is the gonial angle
This is the rounded posterior angle of the mandible - The flaring can be used for sexing
Where is the masseteric tuberosity
This is above the gonial angle - on the ramus
Where is the masseteric fossa
This is the hollowing on the lateral surface of the gonial angle
Where is the endocoronoid ridge
This is the vertical ridge extending inferiorly from the coronoid tip of the inner aspect of the ramus
Where is the mandibular foramen
This is on the medial surface of the ramus this becomes the mandibular canal
Where is the lingula
This is the sharp projection at the edge of the mandibular foramen - tongue
Where is the mylohyoid groove
This runs down from mandibular foramen on the medial surface of the ramus
Where are the pterygoid tuberosities
These are on the medial surface of the gonial angle
What can cause sexing the mandible hard
Tooth loss - causes body height loss, ramus tilts and becomes narrow
How would you side a mandible
The incisors are anterior and nearer to the midline than the molars, the ramus is posterior.
For isolated condyles the the border of the mandibular notch is lateral
For isolated coronoids the notch is posterior, the tip superior and the endocoronoid ridge is medial
For isolated gonial angles the tuberosities are medial
