Mandible Positioning Flashcards by Giana Rivera

What SID is used for a PA mandibular rami view?

40” bucky

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What IR is used for a PA mandibular rami view?

10x12 portrait

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What are the structures seen for a PA mandibular rami view?

Mandibular body and rami symmetric on each side
Entire mandible seen
Demonstrates mandibular rami
Include mental protuberance and TMJ

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What breathing tehcnique is used for a PA mandibular rami view?

Suspended respiration

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How is the patient positioned for a PA mandibular rami view?

Patient is prone/upright
Nose & forehead resting on table/bucky

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Where is the OML & MSP for a PA mandibular rami view?

Perpendicular to IR

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Where is the CR for a PA mandibular rami view?

Exits the acanthion

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What IR is used for a PA mandibular body view?

10x12 portrait

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What SID is used for a PA mandibular body view?

40” bucky

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What are the structures seen for a PA mandibular body view?

Mandibular body symmetric on each side
Entire mandible
Demonstrates mandibular body
Include mental protuberance and TMJ

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What breathing technique is used for a PA mandibular body view?

Suspended respiration

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How is the patient positioned for a PA mandibular body view?

Patient is prone/upright
Nose and chin are touching the IR

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Why do you rest the head of the patient on their chin and nose for a PA mandibular body view and a PA axial (Towne method) Mandible?

So that the anterior surface of the mandibular symphysis is parallel w/ the plane of IR

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Where is the MSP for a PA mandibular body view?

Perpendicular to IR

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Where is the AML for a PA mandibular body view?

Nearly perpendicular to the IR plane

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Where is the CR for a PA mandibular body view?

Exits the level of the lips

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What IR is used for the parietoacanthial (modified waters method) mandible?

10x12 portrait

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What breathing technique is used for the parietoacanthial (modified waters method) mandible?

Suspended respiration

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What SID is used for the parietoacanthial (modified waters method) mandible?

40” bucky

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What are the structures seen for the parietoacanthial (modified waters method) mandible?

Distance between the lateral border of skull and orbit equal on each side
Petrous ridges projected immediately below the inferior border of the orbits
Demonstrates the maxillae, orbits, and zygomatic arches

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How is the patient positioned for the parietoacanthial (modified waters method) mandible?

Patient is prone/PA
Chin on bucky/table

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Where is the MSP & MML for the parietoacanthial (modified waters method) mandible?

Perpendicular to IR

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Where is the OML for the parietoacanthial (modified waters method) mandible?

55- degrees w/ plane of IR

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Where is the CR for the parietoacanthial (modified waters method) mandible?

Exits acanthion

What IR is used for the submentovertical (SMV) mandible position?

10x12 portrait

What SID is used for the submentovertical (SMV) mandible position?

40" bucky

How is the patient positioned for the submentovertical (SMV) mandible position?

- Patient is seated upright (may be done supine but is more difficult for patient) - Flex head bac kto place IOML parallel to IR

Where is the MSP for the submentovertical (SMV) mandible position?

Perpendicular to IR

Where is the CR for the submentovertical (SMV) mandible position?

- Perpendicular to IOML - Entering midway between angles of mandible

What breathing technique is used for the submentovertical (SMV) mandible position?

Suspended respiration

What are the structures seen for the submentovertical (SMV) mandible position?

- Demonstrates the coronoid and condyloid processes of the rami - Mandibular condyles anterior to the pars petrosa

What IR is used for a PA axial (Towne method) Mandible?

10x12 portrait

What SID is used for a PA axial (Towne method) Mandible?

40" bucky

What breathing technique is used for a PA axial (Towne method) Mandible?

Suspended respiration

How many degrees is the CR angled for a PA axial (Towne method) Mandible?

30-degrees cephalic

How is the patient positioned for a PA axial (Towne method) Mandible?

- Patient is prone/upright - Nose and chin on IR

Where is the CR for a PA axial (Towne method) Mandible?

Exits midway between TMJs

Where is the MSP for a PA axial (Towne method) Mandible?

Perpendicular to IR

What are the structures seen for a PA axial (Towne method) Mandible?

- TMJs just inferior to the mastoid processes - Symmetric mandibular rami - Includes mental protuberance and TMJ

What IR is used for an axiolateral oblique mandible view?

10x12 transverse

What SID is used for an axiolateral oblique mandible view?

40" bucky

How many degrees is the CR angled for an axiolateral oblique mandible view?

25-degrees cephalic

Where is the CR for an axiolateral oblique mandible view?

Centered between the bodies of the mandible

How is the patient positioned for an axiolateral oblique mandible view?

- Patient is in RAO/LAO - Head in a lateral position - Mouth closed w/ teeth together

How many degrees would you rotate the head towards the IR when imaging the ramus for an axiolateral oblique mandible view?

0 degrees

How many degrees would you rotate the head towards the IR when imaging the body for an axiolateral oblique mandible view?

30 degrees

How many degrees would you rotate the head towards the IR when imaging the symphysis for an axiolateral oblique mandible view?

45 degrees

Where is the IP line for an axiolateral oblique mandible view?

Perpendicular to IR

Where is the long axis of the mandibular body for an axiolateral oblique mandible view?

Parallel w/ IR

What breathing technique is used for an axiolateral oblique mandible view?

Suspended respiration

What are the structures seen for an axiolateral oblique mandible view?

- Demonstrates the ramus closest to the IR - Ramus & Body= No overlap of the ramus by the opposite side of the mandible - No superimposition of the ramus by the cervical spine - Symphysis= No overlap of the mentum region by the opposite side of the mandible

What IR is used for a PA semi-axial mandible view?

10x12 portrait

What SID is used for a PA semi-axial mandible view?

40" bucky

How many degrees is the CR angled for a PA semi-axial mandible view?

20-25 cephalic

Where is the CR for a PA semi-axial mandible view?

exits acanthion

How is the patient positioned for a PA semi-axial mandible view?

- Patient is prone/upright - Nose & forehead resting on bucky/table

Where is the MSP & OML for a PA semi-axial mandible view?

Perpendicular to IR

What breathing technique is used for a PA semi-axial mandible view?

Suspended respiration

What are the structures seen for a PA semi-axial mandible view?

- Mandibulat body and rami symmetric on each side - Entire mandible seen - Demonstrates condylar processes - Includes mental protuberance and TMJs