Question 1

Which of the following methods is/are used for obtaining periapical radiographs?&#10;A) Paralleling&#10;B) Bisecting&#10;C) Interproximal&#10;D) Both a and b

Accepted Answer

Periapical radiographs can be obtained using either the paralleling or bisecting technique. Interproximal radiographs, also known as bitewings, are used to detect interdental decay and are taken using a different technique altogether.

Question 2

The bite-wing film is used in the:&#10;A) Periapical paralleling technique.&#10;B) Periapical bisecting technique.&#10;C) Occlusal technique.&#10;D) Interproximal examination.

Accepted Answer

The bite-wing film is used in the interproximal examination to diagnose the decay in the tooth structure. It is placed between the teeth and captures the image of the interproximal area.

Question 3

The CMRS is defined as a series of intraoral dental radiographs that shows:&#10;A) All the dentulous tooth-bearing areas of the upper and lower jaws.&#10;B) All the edentulous tooth-bearing areas of the upper and lower jaws.&#10;C) All the dentulous or edentulous tooth-bearing areas of the upper and lower jaws.&#10;D) All the dentulous tooth-bearing areas of the upper and lower jaws that can be verified clinically.

Accepted Answer

The CMRS (Complete Mouth Radiographic Series) includes radiographs of all tooth-bearing areas, whether they have teeth (dentulous) or not (edentulous), in both the upper and lower jaws.

Question 4

CMRS stands for:&#10;A) Complete mouth restorative series.&#10;B) Complete mouth radiographic series.&#10;C) Complete mouth restorative service.&#10;D) Complete mouth radiographic service.

Accepted Answer

CMRS stands for Complete mouth radiographic series, which is a set of dental X-rays that provides a comprehensive view of a patient's teeth, gums, and jawbone. It is a valuable diagnostic tool in dentistry.

Question 5

In a patient without teeth, ____ periapical films are usually sufficient to cover the edentulous areas.&#10;A) 4&#10;B) 7&#10;C) 14&#10;D) 18

Accepted Answer

In an edentulous patient, 14 periapical films are typically used to adequately cover all the edentulous areas in the mouth.

Question 6

Which of the following is an extraoral technique for radiographic examination?&#10;A) Panoramic&#10;B) Interproximal&#10;C) Periapical&#10;D) Occlusal

Accepted Answer

The panoramic technique is an extraoral technique that captures an image of the entire mouth and jaw area. The other options (B, C, D) are all intraoral techniques that capture specific views of individual teeth or small sections of the mouth.

Question 7

Periapical radiographs must show the entire crowns and roots of the teeth being examined as well as ____ to ____ mm beyond the root apices.&#10;A) 0.1; 0.5&#10;B) 1.0; 2.0&#10;C) 2.0; 3.0&#10;D) 4.0; 5.0

Accepted Answer

Periapical radiographs must show the entire crowns and roots of the teeth being examined as well as 2.0 to 3.0 mm beyond the root apices to ensure proper visualization of the periapical region and any possible pathology in that area. Choice A (0.1; 0.5) and B (1.0; 2.0) do not provide adequate coverage, and choice D (4.0; 5.0) is excessive and may result in distortion or overlapping of structures.

Question 8

There are ____ methods for obtaining periapical radiographs.&#10;A) Two&#10;B) Three&#10;C) Five&#10;D) Ten

Accepted Answer

There are two primary methods for obtaining periapical radiographs: the paralleling technique and the bisecting angle technique.

Question 9

The ____ intraoral radiographic examination is used to examine the entire tooth (crown and root) and supporting bone.&#10;A) Periapical&#10;B) Interproximal&#10;C) Occlusal&#10;D) Panoramic

Accepted Answer

The periapical intraoral radiographic examination shows the entire tooth (crown and root) and supporting bone. It is ideal for detection of dental caries, periapical pathology, and evaluation of the periodontal status of the tooth. Interproximal radiographs are used to check for decay between teeth, occlusal radiographs are used to check for decay or defects in the biting surface of teeth, and panoramic radiographs show the entire oral and maxillofacial region but do not provide the same level of detail as periapical radiographs for individual teeth.

Question 10

A total of ____ to ____ films may be included in the CMRS.&#10;A) 4; 7&#10;B) 7; 14&#10;C) 14; 20&#10;D) 19; 21

Accepted Answer

According to the information given, the total number of films that may be included in the CMRS ranges between 14 to 20. Therefore, option C (14; 20) is the best choice as it falls under the given range.

Question 11

Which technique examines the crowns of both maxillary and mandibular teeth on a single film?&#10;A) Periapical paralleling technique&#10;B) Periapical bisecting technique&#10;C) Occlusal technique&#10;D) Interproximal examination

Accepted Answer

The answer of Which technique examines the crowns of both...

Deck 16: Introduction to Radiographic Examinations