Radiology Final Concorde

When adjusting the horizontal angulation, the PID is moved ( ). When adjusting the vertical angulation the PID is moved ( ).

Side-to-side; Up-and-down

A patient who is knowledgeable about the importance of dental images is

More likely to accept prescribed treatment

When a patient trust the dental professional, the patient is

More likely to comply with the prescribed treatment

The gag reflex is elicited by stimulation of the sensitive tissues of the

Soft palate

Your patient is edentulous and has very little alveolar ridge remaining. Which technique would you use for a Periapicacl examination on your patient?

Bisecting

The term facilitation means

the act of making easier

Your patient warned you about her gag reflex. She said that no one has ever been able to take dental images on her. She started gagging on the maxillary anterior images. You have tried several things but have not had any luck. You tried topical anesthetic on the soft palate, salt on her tongue, and having her lift her foot. What should you do?

Take a panoramic image to gather diagnostic information

Inviting a patient to ask questions

enhances communication

To answer questions about the necessity of dental images, tell the patient

there are many diseases and conditions that cannot be detected simply by looking into the mouth.

Your patient is really concerned about getting cancer from dental images. You can relieve her fears because ( ) people have gotten cancer from dental x-rays.

Zero

The teeth on your dental images appear shorter than your patient's teeth, which of the following would you correct when retaking the dental image?

Decrease vertical angulation

If a person is blind or visually impaired, the dental radiographer must

communicate using clear verbal explanations

When taking images on a patient with a hearing disability, you should wear your mask at all times because of the amount of aerosol produced in radiography. It is not important for the patient to see your lips move.

Both parts of the statement are false.

Elongated images refer to images of the teeth that appear __________. Elongation of images results from _____________ vertical angulation.

too long; insufficient

Which receptor placement is most likely to elicit the gag reflex?

maxillary molar

Which of the following suggestions are intended to help reduce the gag reflex?

Asking the patient to suspend an arm or leg in the air

A patient with caries will require

more frequent dental imaging examinations than a patient without such disease.

Which of the following could you do to prevent stimulating your patient's gag reflex?

Slowly place the receptor in his mouth to avoid stimulating his gag reflex

Which of the following is the best way to show your patient that you are listening to him or her?

Give the patient undivided attention.

The patient's first impression of the dental team most often involves the

Dental hygienist

How frequently should you take dental images on your patients?

Based on the patient's needs

Patient education is likely to result in decreased

Fears of x-ray exposure

Your patient has heard a lot of stories and is apprehensive about receiving X-rays. Which of the following could you tell your patient to calm her down?

images are prescribed on a individual basis. We will only take the images that are needed provide a thorough oral assessment. This will limit your radiation exposure

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

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.

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

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

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 false

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

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; large

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

-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

Which of the following techniques use the same principles of horizontal angulation?

1. Paralleling

2. Bisecting

3. Bite-wing

1,2,3

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

+45 to +55

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

Imaginary bisector

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

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?

+30 to +40 degrees

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

dimensional distortion

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

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 degrees

Which size receptor is traditionally used with the bisecting technique?

#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.

informed consent

Must be in a 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.

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

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

Original dental images are the property of

dentist

If the patient is a minor, informed consent

must be obtained from a parent/legal guardian.

If your patient refuses, 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

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.

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.

False

A carious lesion appears _________ on a dental image.

radiolucent

Dental image interpretation enables the dental professional to play a vital role in the detection of _________ of the teeth and jaws that cannot be identified clinically.

1. lesions

2. diseases

3. conditions

1, 2, and 3

Your patient is complaining of pain around tooth #30. A dental image reveals a radiolucent area on the side of the root. You cannot see the lamina dura.which of the following best describes what your patient is experiencing?

Periodontal abscess

Dental images permit the evaluation of ______ in the detection of periodontal disease.

bone

Severe bone loss is defined as a loss of __________.

5mm or greater

A dental image is most useful for detection of _________ caries.

interproximal

Post and core restorations can be seen in ____________ treated teeth.

endodontically

Which of the following occlusal carious lesions cannot be found on a dental image and must be identified clinically?

1 only

You are having difficulty determining whether the radiolucent area on tooth number 7 on the dental image is decay or a composite restoration. Which of the following should you do?

Perform a clinical examination.

Absorption of a tooth that occurs from the inside out is called ________ resorption

internal

The panoramic image is the preferred image for the detection of caries and periodontal disease. The panoramic image is preferred for the evaluation of eruption patterns, growth, and development.

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

On a dental image, interproximal caries are typically seen at or just below the

Contact point

Gutta percha appears _______. If compared with amalgam, gutta percha appears ______ radiodense.

radiopaque; less

horizontal bone loss

bone destruction parallel to a line between CEJs of adjacent teeth

vertical bone loss

bone loss does not occur in a plane parallel to the CEJs of adjacent teeth

Localized bone loss

occurs in isolated areas with less than 30% of sites involved

Generalized bone loss

occurs evenly throughout the dental arches, with more than 30% of the sites involved

Clinical attachment loss (CAL)

A measurement of the distance in millimeters from the CEJ to the base of the sulcus or periodontal pocket; measured by the calibrated periodontal probe.

slight bone loss

1-2 mm

moderate bone loss

3-4 mm

Severe bone loss

5mm or greater

Stage I bone loss

Coronal third of the root <15%

Stage II bone loss

In the coronal third of the root 15% to 33%

Stage III bone loss

Bone loss extending into the mid-third of the root including vertical bone loss and furcation involvement

Stage IV bone loss

Extending into mid-third of the root and beyond including vertical bone loss, furcation involvement, and mobility