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The facial artery typically crosses the inferior border of the mandible just anterior to the masseter muscle's insertion. In most instances, this crossing occurs at or in close proximity to the antegonial notch. This anatomical association has clinical relevance in various surgical procedures involving the face and mandible.
Sometimes mandibular fractures in the region of the angle of the mandible may cause an infection of the submasseteric space. [1] The signs and symptoms of a submasseteric abscess may include marked trismus (i.e. difficulty opening the mouth, since the masseter elevates the mandible and it becomes restricted) and swelling in the region of the ...
the inferior border of the mandible (lingual surface) inferiorly; the medial pterygoid muscle medially (the space is superficial to medial pterygoid) the ascending ramus of the mandible laterally (the space is deep to the ramus of the mandible)
The anterior margin of sternocleidomastoid Superior boundary (base) The lower border of the body of the mandible, and a line extending from the angle of the mandible to the mastoid process
Since the mandible can go through a vast number of different movement paths, Posselt decided to start by studying the "border movements", a term he uses to denote the mandible's capacity for movement. Then he compared these with the habitual movements of the mandible. From the investigation, he concluded that:
Buccal space abscesses typically cause a facial swelling over the cheek that may extend from the zygomatic arch above to the inferior border of the mandible below, and from the anterior border the masseter muscle posteriorly to the angle of the mouth anteriorly. [1] Unless another space is also involved, the tissues around the eye are not swollen.
Cephalometric analysis depends on cephalometric radiography to study relationships between bony and soft tissue landmarks and can be used to diagnose facial growth abnormalities prior to treatment, in the middle of treatment to evaluate progress, or at the conclusion of treatment to ascertain that the goals of treatment have been met. [5]
The retromolar space or retromolar gap is a space at the rear of the mandible, between the back of the last molar and the anterior edge of the ascending ramus where it crosses the alveolar margin. This gap is generally small or absent in modern humans, but it was more often present in Neanderthals , [ 1 ] and it was common among some ...