Flashcards in Mandible, Orbits, and Sinuses Deck (77)
What is the largest moveable bone of the face
The curved horizontal portion of the mandible is the
The vertical portion of the mandible is the
The junction of the body and the ramus is the
Angle of mandible/gonion
The bump on the tip of the chin is termed the
The junction of the right and left halves of the mandible is the
The roots of the teeth are supports by this
Nerves and blood vessels travel through this hole located on each side of the body of the mandible
The anterior portion of the ramus is the
The posterior portion of the ramus that articulates with the mandibular fossa is called the
Where is the mandibular notch located
Top of ramus between coronoid and condylar process
How many sinuses are there
What is within the normal sinus
What are the 3 functions of the sinuses
⚫️warm and moisten inhaled air
◾️decrease weight of skull
⚫️provide resonating chamber for voice
These sinuses are cloud shaped and located over the midline
The largest sinuses are the
The 2nd largest sinuses are the
Which sinuses are located between the orbits
These sinuses are triangular shaped
The maxillary sinuses are located on either side of the
The sphenoid sinuses are directly under the
On a PA Mandible what touches the grid
Forehead and nose
On a PA Mandible OML is?
On a PA Mandible MSP is?
On a PA Mandible CR is?
Perpendicular; exit acanthion
On a PA Mandible what does this view demonstrate?
◾️mandibular rami and body
◾️must see entire mandible
On PA axial mandible what touches the grid?
Forehead and nose
On PA axial mandible what type of fractures it demonstrates?
Medial or lateral displacement of fragments in fractures of rami
On PA axial mandible OML is?
On PA axial mandible MSP is?
On PA axial mandible CR is?
20-25 cephalic; exits acanthion
On PA axial mandible can you see the mandibular condyles?
On the axiolateral oblique mandible what anatomic piece is parallel to IR?
Desired portion of mandible
On the axiolateral oblique mandible CR is?
20-25 cephalic enter 2" distal gonion of upside.
Exits down mandibular body
•Ramus and body
•No overlap of ramus by opposite side of mandible
•No elongation or foreshortening of ramus or body
•No superimposition of ramus by C-spine
•No overlap of mentum region by opposite side of mandible
•No foreshortening of mentum region
On the axiolateral oblique mandible what is demonstrated?
On the axiolateral oblique mandible when doing the semi supine projection, what is your tube angle? What is the angle of the sponge used?
Tube 20-25 cephalic
On the axiolateral oblique mandible done TT or Bucky when pt is semi supine?
On the axiolateral oblique mandible you need to make sure what other body part does not superimpose the mandible
In axiolateral oblique TMJS where to center IR?
1/2 inch anterior to EAM
In axiolateral oblique TMJS CR is?
25-30 caudal entering 1/2 anterior and 2 inch superior to upside EAM
Exits through TMJ closer to IR
In axiolateral oblique TMJS which side is against the IR?
Cheek- affected Side
•Demonstrates condyles and neck of mandible
•Both sides done for comparison
•Must see TMJ’s
•Condyle lying in mandibular fossa in closed-mouth position
•Condyle lying inferior to articular tubercle in open-mouth position, if normal
In axiolateral oblique TMJS what is demonstrated?
In axiolateral oblique TMJS MSP is
In axiolateral oblique TMJS IPL is
In AP axial TMJS what touches the IR?
In AP axial TMJS demonstrates what?
Condyles if mandible and mandibular fossa of temporal bone
In AP axial TMJS OML is?
In AP axial TMJS MSP is?
In AP axial TMJS CR is?
35 caudal midway between TMJS 3 inches above nasion
In AP axial TMJS 2 exposures are made, what are they?
Open and closed mouth
In axiolateral oblique TMJS (law method) what are the differences from the other axiolateral oblique TMJ method?
On law you tilt MSP 15 degrees toward the IR and make AML parallel with the transverse axis of the IR
In axiolateral oblique TMJS (law method) the CR is
15 degree caudal exiting the TMJ closest to the IR. Enters 1/2 superior to the upside EAM
•The images in the open-mouth and closed-mouth positions show the condyles and necks of the mandible.
•The images show the relationship between the mandibular fossa and the condyle.
•The open-mouth position shows the mandibular fossa and the condyle.
•Both sides are examined for comparison.
• The closed-mouth position shows fractures of the neck and condyle of the ramus.
In axiolateral oblique TMJS (law method) demonstrates what?
In lateral sinuses IPL is
In lateral sinuses MSP is
In lateral sinuses IOML is
Parallel to transverse plane of IR
In lateral sinuses CR is
Perpendicular; 1/2-1 inch posterior to outer canthus
In lateral sinuses which sinuses are demonstrated?
In lateral sinuses what sinus is most posterior on image?
In lateral sinuses how do orbital roofs and mandibular rami appear?
In PA axial (Caldwell) what parts are touching the IR
Nose and forehead
In PA axial (Caldwell) OML is
In PA axial (Caldwell) CR is
15 caudal exits nasion
In PA axial (Caldwell) what sinus is best demonstrated
In PA axial (Caldwell) what other sinus is demonstrated
In PA axial (Caldwell) where are the petrous ridges?
Lower third of orbits
In the pareitoacanthial waters sinuses what part is touching the IR
In the pareitoacanthial waters sinuses OML is
37 degree angle
In the pareitoacanthial waters sinuses MML is
In the pareitoacanthial waters sinuses CR is
In the pareitoacanthial waters sinuses the petrous ridges are located where?
Below the floor of the maxillary sinus
In the pareitoacanthial waters sinuses what sinus is best demonstrated?
Paretoorbital oblique Rhese Orbit which parts are touching the grid
Nose, cheek, chin
Paretoorbital oblique Rhese Orbit AML is
Paretoorbital oblique Rhese Orbit rotate head so the MSP is
53 degrees to the plane of IR
Paretoorbital oblique Rhese Orbit the CR is
Perpendicular; and exits orbit closest to IR