Question 1

What term is applied to caries that are no longer active?

Accepted Answer

Arrested caries. Carious lesio

Question 2

Which of the following is least likely to be imaged on a radiograph?

Accepted Answer

A)  Incipient occlusal caries 
B)  Moderate proximal surface caries 
C)  Advanced proximal surface caries 
D)  Severe root caries 
A)  Incipient occlusal caries 
B)  Moderate proximal surface caries 
C)  Advanced proximal surface caries 
D)  Severe root caries

Question 3

What is the term applied to the pathologic process in which acids produced by microorganisms cause local destruction of dental hard tissues?

Accepted Answer

Caries (tooth decay). The cari

Question 4

Arrested caries refers to caries that are no longer active.

Accepted Answer

A) True 
 B)False

Question 5

The high contrast between normal enamel and overlapped enamel can produce an optical illusion called "cervical burnout."

Accepted Answer

A) True 
 B)False

Question 6

The shape of proximal caries begins as a radiolucent double triangle through the enamel and dentin.

Accepted Answer

A) True 
 B)False

Question 7

Each of the following is a possible location of caries EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Root 
B)  Proximal 
C)  Alveolar 
D)  Occlusal 
A)  Root 
B)  Proximal 
C)  Alveolar 
D)  Occlusal

Question 8

According to the grading system suggested by Haugejorden and Slack (1977), what is the most extensive class of proximal decay?

Accepted Answer

C-4, or severe caries. Severe

Question 9

What term is applied to an optical illusion in which radiolucent lines are caused by overlapping images of the teeth?

Accepted Answer

The Mach band effect. When two

Question 10

For dental caries to be recorded on a radiograph, there has to be a decrease in calcium and phosphorus of approximately 40-50 percent.

Accepted Answer

A) True 
 B)False

Question 11

Buccal and lingual caries are best detected radiographically.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following statements is FALSE?

Accepted Answer

A)  The detection of caries is one of the most common reasons for exposing dental radiographs. 
B)  The carious process is one of remineralization of tooth structure. 
C)  Caries appears radiolucent on the radiograph. 
D)  The presence of caries allows more x-rays to pass through the tooth and darken the image receptor. 
A)  The detection of caries is one of the most common reasons for exposing dental radiographs. 
B)  The carious process is one of remineralization of tooth structure. 
C)  Caries appears radiolucent on the radiograph. 
D)  The presence of caries allows more x-rays to pass through the tooth and darken the image receptor.

Question 13

The depth of buccal or lingual caries can be determined by observing the radiographs.

Accepted Answer

A) True 
 B)False

Question 14

What is the radiographic appearance of moderate occlusal decay at the DEJ?

Accepted Answer

A thin, fl

Question 15

An optical illusion caused by the overlapping of teeth that mimics decay is called the "Mach band effect."

Accepted Answer

A) True 
 B)False

Question 16

The caries process demineralizes tooth structures, allowing _____ x-rays to pass through the tooth and _______ the image receptor.

Accepted Answer

A)  more, lighten 
B)  more, darken 
C)  less, lighten 
D)  less, darken 
A)  more, lighten 
B)  more, darken 
C)  less, lighten 
D)  less, darken

Question 17

A caries grading system establishes a baseline from which to track the progression and/or remineralization of the carious lesions at future appointments.

Accepted Answer

A) True 
 B)False

Question 18

Radiographs reveal carious lesions that may go undetected clinically, especially caries in the pits and fissures (occlusal surfaces) of the posterior teeth.

Accepted Answer

A) True 
 B)False

Question 19

How are caries differentiated from nonmetallic radiolucent restorations radiographically?

Accepted Answer

Caries usually have more diffuse borders

Question 20

Which of the following conditions resembles caries on a radiograph?

Accepted Answer

A)  Nonmetallic restorations 
B)  Cervical burnout 
C)  Mach band effect 
D)  All of the above 
A)  Nonmetallic restorations 
B)  Cervical burnout 
C)  Mach band effect 
D)  All of the above

Exam 24: The Use of Radiographs in the Detection of Dental Caries

What term is applied to caries that are no longer active?

Which of the following is least likely to be imaged on a radiograph?

What is the term applied to the pathologic process in which acids produced by microorganisms cause local destruction of dental hard tissues?

Arrested caries refers to caries that are no longer active.

The high contrast between normal enamel and overlapped enamel can produce an optical illusion called "cervical burnout."

The shape of proximal caries begins as a radiolucent double triangle through the enamel and dentin.

Each of the following is a possible location of caries EXCEPT one. Which one is the EXCEPTION?

According to the grading system suggested by Haugejorden and Slack (1977), what is the most extensive class of proximal decay?

What term is applied to an optical illusion in which radiolucent lines are caused by overlapping images of the teeth?

For dental caries to be recorded on a radiograph, there has to be a decrease in calcium and phosphorus of approximately 40-50 percent.

Buccal and lingual caries are best detected radiographically.

Which of the following statements is FALSE?

The depth of buccal or lingual caries can be determined by observing the radiographs.

What is the radiographic appearance of moderate occlusal decay at the DEJ?

An optical illusion caused by the overlapping of teeth that mimics decay is called the "Mach band effect."

The caries process demineralizes tooth structures, allowing _____ x-rays to pass through the tooth and _______ the image receptor.

A caries grading system establishes a baseline from which to track the progression and/or remineralization of the carious lesions at future appointments.

Radiographs reveal carious lesions that may go undetected clinically, especially caries in the pits and fissures (occlusal surfaces) of the posterior teeth.

How are caries differentiated from nonmetallic radiolucent restorations radiographically?

Which of the following conditions resembles caries on a radiograph?

Dental Radiography: Historical Perspective and Future Trends

Characteristics and Measurement of Radiation

The Dental X-Ray Machine: Components and Function

Factors Affecting Radiographic Quality

Effects of Radiation Exposure

Radiation Protection

Dental X-Ray Film and Processing Methods

Digital Radiography and Image Acquisition

Infection Control

Legal and Ethical Responsibilities

Patient Relations and Education

Introduction to Radiographic Examinations

The Periapical Examinationparalleling Technique

The Periapical Examinationbisecting Technique

The Bitewing Examination

The Occlusal Examination

The Panoramic Examination

Identifying and Correcting Undiagnostic Radiographs

Quality Control and Environmental Safety in Dental Radiography

Image Orientation and Introduction to Interpretation

Recognizing Normal Radiographic Anatomy Intraoral Radiographs

Recognizing Normal Radiographic Anatomy Panoramic Radiographs

Radiographic Appearance of Dental Materials and Foreign Objects

The Use of Radiographs in the Evaluation of Periodontal Diseases

Describing Radiographic Anomalies, Lesions, and Opportunistic Screening

Pediatric Radiographic Techniques

Radiographic Techniques for Patients With Special Needs

Radiographic Techniques for Specific Oral Conditions

Radiographic Techniques

Filters

The caries process demineralizes tooth structures, allowing _ x-rays to pass through the tooth and ___ the image receptor.