Question 1

Which of the following is used for radiographing soft tissue?&#10;A)Arthrography&#10;B)Computed tomography conventional panoramic&#10;C)Conventional panoramic&#10;D)Conventional tomography

Accepted Answer

Arthrography uses contrast agents to image soft tissue structures such as ligaments, tendons, and menisci. CT and conventional panoramic radiography are best suited for imaging hard tissue structures such as bones and teeth. Conventional tomography is a type of radiography that is rarely used today.

Question 2

The submentovertex projection can be used to view the TMJ from the axial plane.

Accepted Answer

The submentovertex projection is a radiographic projection that allows for visualization of the TMJ from the axial plane.

Question 3

The major cause of TMJ disorders is the mandibular condyle.

Accepted Answer

While the mandibular condyle is involved in TMJ disorders, it is not the major cause. TMJ disorders can have a variety of causes, including trauma to the jaw, arthritis, and muscle tension.

Question 4

With a conventional panoramic projection,glenoid fossa and the condyle will be seen,but the articular disc will not be seen.&#10;A)Both statements are true.&#10;B)Both statements are false.&#10;C)First statement is true,second is false.&#10;D)First statement is false,second is true.

Accepted Answer

In a conventional panoramic projection, the glenoid fossa and the condyle are indeed visible because they are bony structures that can be captured by X-ray imaging. However, the articular disc, being a soft tissue structure, does not appear on such X-rays, making both statements true.

Question 5

If the panoramic image shows a pathologic process,a more advanced projection can be used to formulate the diagnosis.&#10;A)Both statements are true.&#10;B)Both statements are false.&#10;C)First statement is true,second is false.&#10;D)First statement is false,second is true.

Accepted Answer

If a panoramic image shows a pathologic process such as a radiolucency or radiopacity, a more advanced projection such as an intraoral periapical or cone beam computed tomography (CBCT) can be used to further investigate and formulate the diagnosis. Both statements are true.

Question 6

Complications may occur with which of the following procedures:&#10;A)CT.&#10;B)MRI.&#10;C)arthrography.&#10;D)a panoramic radiograph.

Accepted Answer

Complications can occur with arthrography, which involves injecting contrast dye into a joint to view it on an X-ray or CT scan. Complications can include infection, allergic reaction, bleeding, and joint swelling. CT, MRI, and panoramic radiographs typically do not have significant complications.

Question 7

Which of the following techniques will the articular disc be seen?&#10;A)Computed tomography&#10;B)Conventional panoramic&#10;C)Conventional tomography&#10;D)Magnetic resonance imaging

Accepted Answer

Magnetic resonance imaging (MRI) is the preferred imaging technique to visualize the articular disc due to its ability to provide clear soft tissue contrast without ionizing radiation. Computed tomography (CT) and conventional panoramic radiographs do not provide enough detail. Conventional tomography can provide some information, but it is not as detailed as an MRI.

Question 8

If an image on a CT scan is radiopaque,what will the image appeal line on a magnetic resonance image.&#10;A)Radiopaque&#10;B)Radiolucent&#10;C)Completely clear&#10;D)Completely dark

Accepted Answer

Radiopaque objects are dense and block X-rays, appearing white on CT scans. On the other hand, radiolucent objects allow X-rays to pass through and appear dark on CT scans. In an MRI, radiopaque objects will appear bright or white, while radiolucent objects will appear dark. Therefore, the best choice is B (radiolucent) as it describes how a radiopaque object would appear on an MRI image.

Question 9

In TMJ radiography,it is preferable to take films in the open and closed positions.

Accepted Answer

Taking films in both the open and closed positions allows for better evaluation of the movement and function of the temporomandibular joint.

Question 10

A conventional panoramic projection will show both the right and left joints in the:&#10;A)axial plane.&#10;B)lateral plane.&#10;C)frontal plane.&#10;D)cross-sectional plane.

Accepted Answer

A panoramic projection shows a wide view of the oral and maxillofacial region, which includes both the right and left joints. However, this view is projected in the lateral plane, which is perpendicular to the sagittal plane of the body. Therefore, the correct choice is B) lateral plane. The axial plane would show a cross-sectional view of the joints, while the frontal plane would show a view from the front of the face.

Question 11

Identify the most common extraoral view used to examine the temporomandibular joint after the panoramic examination:&#10;A)MRI.&#10;B)skull projection.&#10;C)transcranial projection.&#10;D)submentovertex projection.

Accepted Answer

The answer of Identify the most common extraoral view used...

Question 12

All of the following is seen with conventional tomography EXCEPT one.Which one is the EXCEPTION?&#10;A)Neck&#10;B)Fossa&#10;C)Articular disc&#10;D)Head of the condyle

Accepted Answer

The answer of All of the following is seen with...

Question 13

On the average,the exposure time at 65 kV and 10 mA for a transcranial projection is:&#10;A)7 to 10 impulses.&#10;B)7 to 10 seconds.&#10;C)7 to 15 impulses.&#10;D)7 to 15 seconds.

Accepted Answer

The answer of On the average,the exposure time at 65...

Question 14

Positioning boards are used with transcranial techniques to allow how many exposures for each condyle?&#10;A)Up to two&#10;B)Up to three&#10;C)Up to four&#10;D)Up to five

Accepted Answer

The answer of Positioning boards are used with transcranial techniques...

Question 15

Computed tomography (CT scanning)enables viewing of an area in three planes.

Accepted Answer

The answer of Computed tomography (CT scanning)enables viewing of an...

Question 16

Images that are opaque on an image obtained by magnetic resonance imaging (MRI)have a low hydrogen density and a strong signal.

Accepted Answer

The answer of Images that are opaque on an image...

Question 17

When examining the TMJ,one disadvantage of computed tomography is that this type of scan does not include images of the:&#10;A)articular disc.&#10;B)articular eminence.&#10;C)mandibular condyle.&#10;D)external meatus of the ear.

Accepted Answer

The answer of When examining the TMJ,one disadvantage of computed...

Question 18

The anatomic components not visible on a conventional radiograph of the TMJ are the:&#10;A)articular disc and the mandibular condyle.&#10;B)articular fossa and the mandibular condyle.&#10;C)neck of the condyle and the external auditory meatus.&#10;D)articular disc and the internal and external pterygoid muscles.

Accepted Answer

The answer of The anatomic components not visible on a...

Question 19

Four views of the TMJ can be seen by:&#10;A)CT.&#10;B)MRI.&#10;C)arthrography.&#10;D)the transcranial technique.

Accepted Answer

The answer of Four views of the TMJ can be...

Deck 14: Radiography of the Temporomandibular Joint