Surface Bones of the Face Flashcards
Cheek Bone
Slightly inferior and lateral to the outer corner of the eye
The greatest width of the anterior plane of the face is measured between the centers of both of these
Zygomatic bones
2
Lies directly inferior to the glabella
Create a dome over the superior part of the nasal cavity
Its frontal and lateral surfaces widen as the descend
Nasal bones
2 Creates the upper jaw
Articulate the medial line below the nasal cavity
Maxilla
The small bony spur which projects at the base of the nasal cavity
Nasal Spine of the maxilla
The most inferior part of the nose
Columna Nasi
The thick spongy bone which projects from the lower surface of the maxilla and contains the sockets for the teeth
Alveolar Process
1 Creates the lower jaw Held in place by muscles and tendons Horizontal portion of the jawbone Horeshoe shaped
Mandible
Vertical portion of the jawbone
Terminates superiorly in 2 processes, the coronoid process and the condyle
Ramus
Lies anterior and has no influence on surface form
Coronoid process
The rounded process which rests in the mandibular fossa in the temporal bone
Aids in ear restoration because it lies anterior to the ear passage
Condyle
2
Where the ramus joins the inferior border of the body
Will greatly influence the geometric form of the head
Angle
Degree of obtuseness at birth
175 degrees
Degree of obtuseness at 4 years
140 degrees
Degree of obtuseness as an adult
110-120 Degrees
Degree of obtuseness in old age
140 degrees with loss of teeth and absorption of alveolar processes
A triangular eminence of the chin
The base of the eminence is slightly concave but at each end is a prominent mental tubercle
Mental Eminence
A depression of the lower jaw below 4 front incisor teeth
Is responsible for the recession at the center of the lower lip to the top of the chin
Incisive Fossa
Projection of the jaws beyond the projection of the forehead
A condition in which the jaw projects anteriorly beyond the superior part of the face
Prognathism
Sockets of the teeth are inclined
Alveolar Prognathism
Oblique insertion of the teeth
Front teeth protrude
Dental Prognathism
The base of the nasal cavity protrudes anormally
Infranasal Prognathism
The inferior jaw protrudes
Mandibular Prognathism
The superior jaw protrudes
Maxillary Prognathism