Radiography M8Q6 Ch.15, 20,26

In order to take this projection, you need to have your patient face the receptor, touch his forehead to the receptor, tuck his chin down to his chest, and open his mouth as wide as he can. Which projection is this?

Reverse Towne

Submentovertex

Posteroanterior

Waters

Reverse Towne

A panoramic radiograph can always be substituted for a complete series of dental images. A panoramic radiograph does not clearly reveal changes in teeth, such as tooth decay, or the details of the supporting bone.

Both statements are true.

Both statements are false.

The first statement is true; the second statement is false.

The first statement is false; the second statement is true.

The first statement is false; the second statement is true.

The left side of the patient's head is positioned adjacent to the cassette for the _____________ projection.

lateral cephalometric

Waters

posteroanterior

submentovertex

lateral cephalometric

The recommended anterior periapical exposure sequence for the bisecting technique starts with the

maxillary left canine.

maxillary right canine.

mandibular right canine.

mandibular left canine.

maxillary right canine.

According to the text, the advantages of the bisecting technique are greater than the disadvantages. Therefore, the bisecting technique should be used instead of the paralleling technique when taking periapical images.

Both statements are true.

Both statements are false.

The first statement is true; the second statement is false.

The first statement is false, the second statement is true.

Both statements are false.

When the bisecting technique is used, the receptor must be placed along the ________ surface of the tooth.

lingual

buccal

mesial

distal

lingual

An extraoral image is placed __________ the mouth during x-ray exposure. Extraoral imaging is used to image _________ areas of the skull or jaws.

outside; small

inside; small

inside; large

outside; large

outside; large

With the bisecting technique, the recommended vertical angulation range for tooth number 30 is _________ degrees.

-5 to 0

+ 20 to +30

-20 to -30

-10 to -15

-5 to 0

Extraoral images may be used in conjunction with intraoral images. Extraoral images are not as defined or sharp as intraoral images.

Both statements are true.

Both statements are false.

The first statement is true; the second statement is false.

The first statement is false; the second statement is true.

Both statements are true.

Which of the following techniques use the same principles of horizontal angulation?1. Paralleling2. Bisecting3. Bite-wing

1, 2, 3

1, 2

2, 3

1, 3

1, 2, 3

With the bisecting technique, the recommended vertical angulation range for tooth number 6 is _________ degrees.

+20 to +30

+30 to +40

+40 to +50

+45 to +55

+45 to +55

When the bisecting technique is used, the central ray is directed at 90 degrees to the

imaginary bisector.

receptor.

long axis of the tooth in the same arch

.long axis of the tooth in the opposing arch.

imaginary bisector.

Which of the following would you evaluate using an extraoral image?

Growth and development

Gutta percha placement in the root canal

Recurrent decay

Level of crestal bone

Growth and development

You are using the Rinn Snap-A-Ray to take a dental image of tooth #13. What vertical angulation should you set the PID at to get a dental image that is the same length as the tooth?

-10 to -15 degrees

+ 20 to +30 degrees

+30 to +40 degrees

There is no need to set the vertical angulation.

+30 to +40 degrees

The primary disadvantage of the bisecting technique when contrasted with the paralleling technique is

requirement of a receptor holder.

greater magnification.

longer exposure times.

dimensional distortion.

dimensional distortion.

When the bisecting technique is used, which of the following angles is bisected?

The angle that is perpendicular to the receptor

The angle formed by the central ray and the tooth

The angle formed by the receptor and the long axis of the tooth

The angle formed by the central ray and the receptor

The angle formed by the receptor and the long axis of the tooth

With the bite-wing technique, the vertical angulation is predetermined; the central ray is directed at ____ degrees to the occlusal plane.

+10

-10

+20

-20

+10

Which size receptor is traditionally used with the bisecting technique?

#1 receptor for anterior teeth, #1 receptor for posterior teeth

#2 receptor for anterior teeth and for posterior teeth

#2 receptor for anterior teeth, #1 receptor for posterior teeth

#2 receptor for anterior teeth and for posterior teeth

Which of the following statements is true of dental images and the patient’s dental record?

The dental record must include documentation of the number and type of dental images exposed.

Dental images are an optional rather than integral part of the dental record.

It is advised to keep patient dental images in a file separate from patient charts.

The dental record must include documentation of the number and type of dental images exposed.

Informed consent

does not require that patients receive enough information to make informed choices.

is waived if the patient is a minor.

does not require that patients have their questions answered before x-ray exposure.

must be in language that the patient can readily understand.

must be in language that the patient can readily understand.

Your new patient has asked if you could use the images from his previous dentist. You should tell your patient that

you can accept the image if they were taken recently and are of acceptable quality.

you can only accept them if you can have a digital copy.

you can only accept them if they are originals.

you cannot accept them. You will have to take a new set today.

you can accept the image if they were taken recently and are of acceptable quality.

Your former patient has moved and would like his records including the original radiographs (film type) sent to his new dentist. Which of the following should you do?

Forward the original radiographs to the new dentist.

Copy the original films, send the original films, and keep the duplicate set.

Keep the original films and send the new dentist a duplicate set.

Make a duplicate copy to send to the new dentist unless the patient signs a release to send the originals.

Keep the original films and send the new dentist a duplicate set.

Original dental images are the property of

the government.

the patient.

both patient and dentist.

the dentist.

the dentist

If the patient is a minor, informed consent

must be obtained from the babysitter.

may still be obtained from the patient.

is waived.

must be obtained from a parent/legal guardian.

must be obtained from a parent/legal guardian.

If your patient refuses images, you will not be able to provide dental care on your patient, because providing treatment without necessary images is considered negligence.

Both statements and reason are true.

Both statements and reason are false.

The statement is true; the reason is false.

The statement is false, the reason is true.

Both statements and reason are true.

When a patient refuses dental images the dentist has deemed are necessary for treatment planning, the dentist should refuse to treat the patient; however, the patient could sign a release form that would allow the dentist to continue with the patient's treatment.

Both parts of the statement are true.

Both parts of the statements are false.

The first part of the statement is true; the second part of the statement is false.

The first part of the statement is false; the second part of the statement is true.

The first part of the statement is true; the second part of the statement is false.

Dental x-rays can be discarded after 5 years.

True

False

False