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RAD-248 MANDIBLE & TMJ
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how do we prevent superimposition of the gonion over the cspine
have patient close the mouth and bring teeth together
the head in a true lateral demosntrates what part of the mandible
ramus
A 30 deg rotation toward the IR best demonstrates what part of the mandible
body of mandible
a 45 deg rotation best demonstrates what part of the mandible
mentum
what deg of rotation reveals a general survey of the mandible
10-15 deg
for the horizontal trauma position of the lateral mandible how much angle is on the cr
and posterior angle of
25 deg cephalad from IPL
5-10 deg
the lateral position of the mandible demonstrates what structures closest to the IR
rami condylar and coronoid processes body and mentum of the mandible
for the erect version of the mandible where is the cr and cr angle and level of tilt of the head
Cr is to exit mandibular region of interest
10 caudal angle
15 deg tilt of the upwards
for a pa or pa axial position of the mandible what line is perpendicular to the table
oml
where is the CR for a pa mandible
if the patient was trauma how would you do this
Cr perp to IR and centered to exit at junction of lips
supine
what is the degree of angulation for the optional pa axial mandible
where is the cr exiting
angle cr 20-25 cephalad
cr exits at the acanthion
for a true pa projection of the body (if it is the are of interest) what would you have to do
raise chin to bringf AML (acanthiomeatal line ) perpendicular to the IR
what structures are visualized in the pa mandible position
mandibular rami and lateral poriton of the body
what anatomy is demonstrated in the optional pa axial position of mandible
TMJ region and heads of the condyles are visible through mastoid processes condyloid processes are seen as well
what is the kv range for the mandible
70-80kv
in the ap townes view of the mandible what line is perp to the table and where is the CR
OML perp
CR at level of glabella
what cr angle is used for the townes view of the mandible using the OML and IOML
oml 35 deg caudad
42 deg caudad to ioml
If the area of interest is the TM fossae how much angle is needed to reduce superimposition of TM fossae and mastoid portions of the temporal bone
40 caudad to OML
what anatomy is demonstrate in an ap townes of the mandible
condyloid processes of mandible and TM fossae
where is the CR for an SMV of the mandible
midway btw angles of mandible or at a level 1.5 in to mandibular symphysis
what anatomy is demonstrated in an smv of the mandible
entire mandible and coronoid and condyloid process
in the modified towne method where is the CR and what else is the same
CR 3 in superior to nasion
angles are the same as towne mandible
where is the CR for the axiolateral oblique projection for the TMJ
how much CR angle do you need
1.5 in superior to upside EAM
15 caudad
the face should be tilted ____ deg toward IR in modified law method
15
in the modified law (axiolateral)which line is perp to the front edge of the IR
IOML
In the schuller method of the TMJ where is the CR and angulation
CR 25-30 caudad to .5in anterior and 2 in superior to upside EAM
TMJ must be done with mouth open and closed
t or f
True
False
True
the schueller method is done for what
to elongate the the condyle compared to the law method
Some departments take the tmj joint with open and closed mouth in what projection
modified townes
In what projection is mandible viewd as a horseshoe shape
SMV
The upper portion of each ramus terminates in ____ shaped notch termed the _____
u shaped
mandibular notch
what is the anterior process of the mandibular notch called
coronoid process
the posterior process of the mandibular notch is termed the
condyloid process
what is structure located on each half of the mandible
what are they for
mental foramina
artery veins and nerves that support the lower lip and chin
what is the center of the mental protuberance called
mental point
what is flat triangular are below the symphysis marked by two knoblike protuberances that project forward is called
mental protuberance
the mandible joins together to become one bone at what age
1
what is the ridge that extends along the entire superior portion of the body of the body
alveolar process
area superior to angle and anterior to angle is termed
superior = ramus
anterior = body
how is the tmj joint formed
condyloid process fits into the tm fossa of the temporal bone to for tmj
what structure dives one half of the mandible into the body and ramus
angle of mandible
TMJ has what type of movements
hinge and gliding
the process of the mandible that forms the tmj joint is the
condyloid process
each tmj joint is located slightly ___ & ___ to the EAM
superior and anterior
which projection of the mandible best demonstrates the condyloid process is the
townes ap axial
Author
anatomy12
ID
289840
Card Set
RAD-248 MANDIBLE & TMJ
Description
xray
Updated
2014-12-07T01:59:42Z
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