Question 1

A cone-cut occurs when

Accepted Answer

A) the receptor is underexposed. 
B) the receptor is overexposed. 
C) the PID was not properly aligned with the periapical receptor holder. 
D) the exposure button was not depressed for a sufficient amount of time. 
A) the receptor is underexposed. 
B) the receptor is overexposed. 
C) the PID was not properly aligned with the periapical receptor holder. 
D) the exposure button was not depressed for a sufficient amount of time.

Question 2

You will need to take a retake on your patient's mandibular right premolars because of overlapping.The overlapping is more excessive toward the mesial of the film than the distal of the film.What do you need to do to prevent this error on the retake?

Accepted Answer

A) Correct horizontal angulation,direct the PID more toward the distal. 
B) Correct horizontal angulation,direct the PID more toward the mesial. 
C) Correct vertical angulation,decrease vertical angulation. 
D) Correct vertical angulation,increase vertical angulation. 
A) Correct horizontal angulation,direct the PID more toward the distal. 
B) Correct horizontal angulation,direct the PID more toward the mesial. 
C) Correct vertical angulation,decrease vertical angulation. 
D) Correct vertical angulation,increase vertical angulation.

Question 3

Blurred images appear on the dental image when

Accepted Answer

A) there is patient movement. 
B) the film is reversed. 
C) there is a double exposure. 
D) the film is creased. 
A) there is patient movement. 
B) the film is reversed. 
C) there is a double exposure. 
D) the film is creased.

Question 4

What is the cause of a double exposure?

Accepted Answer

A) The patient moved during receptor exposure. 
B) Two radiographs were stuck together during film exposure. 
C) A double packet of film was used. 
D) The film was exposed in the patient's mouth twice. 
A) The patient moved during receptor exposure. 
B) Two radiographs were stuck together during film exposure. 
C) A double packet of film was used. 
D) The film was exposed in the patient's mouth twice.

Question 5

When overlapped contacts appear on a dental image,the cause is

Accepted Answer

A) incorrect vertical angulation. 
B) incorrect horizontal angulation. 
C) a dropped receptor corner. 
D) an underexposed film. 
A) incorrect vertical angulation. 
B) incorrect horizontal angulation. 
C) a dropped receptor corner. 
D) an underexposed film.

Question 6

To avoid a double exposure,

Accepted Answer

A) only expose and process one half of the patient's mouth at one time. 
B) mark exposed films with indelible ink. 
C) always separate exposed and unexposed film and PSP receptors. 
D) ask the patient to hold the unexposed film and PSP receptors. 
A) only expose and process one half of the patient's mouth at one time. 
B) mark exposed films with indelible ink. 
C) always separate exposed and unexposed film and PSP receptors. 
D) ask the patient to hold the unexposed film and PSP receptors.

Question 7

When the distal surfaces of the canines are not visible on a premolar bite-wing image,the solution is to

Accepted Answer

A) change the horizontal angulation of the tubehead. 
B) increase the vertical angulation of the tubehead. 
C) decrease the vertical angulation of the tubehead. 
D) position the anterior edge of the receptor at the midline of the mandibular canine. 
A) change the horizontal angulation of the tubehead. 
B) increase the vertical angulation of the tubehead. 
C) decrease the vertical angulation of the tubehead. 
D) position the anterior edge of the receptor at the midline of the mandibular canine.

Question 8

Short teeth with blunted roots appear on the image when

Accepted Answer

A) the vertical angulation is excessive. 
B) the vertical angulation is insufficient. 
C) the horizontal angulation is incorrect. 
D) there is a cone-cut. 
A) the vertical angulation is excessive. 
B) the vertical angulation is insufficient. 
C) the horizontal angulation is incorrect. 
D) there is a cone-cut.

Question 9

A thin radiolucent line appears on the film with

Accepted Answer

A) film creasing. 
B) film bending. 
C) double exposure. 
D) patient movement. 
A) film creasing. 
B) film bending. 
C) double exposure. 
D) patient movement.

Question 10

When the occlusal plane appears tipped or tilted,the error is a(n)

Accepted Answer

A) incorrect horizontal angulation. 
B) incorrect vertical angulation. 
C) dropped receptor corner. 
D) elongated image. 
A) incorrect horizontal angulation. 
B) incorrect vertical angulation. 
C) dropped receptor corner. 
D) elongated image.

Question 11

To prevent a dropped receptor corner,

Accepted Answer

A) change the horizontal angulation. 
B) increase the vertical angulation. 
C) decrease the vertical angulation. 
D) make certain the edge of the receptor is placed parallel to the incisal-occlusal surfaces of the teeth. 
A) change the horizontal angulation. 
B) increase the vertical angulation. 
C) decrease the vertical angulation. 
D) make certain the edge of the receptor is placed parallel to the incisal-occlusal surfaces of the teeth.

Question 12

An unexposed sensor appears

Accepted Answer

A) clear. 
B) black. 
C) gray. 
D) clear or black. 
A) clear. 
B) black. 
C) gray. 
D) clear or black.

Exam 20: Exposure and Technique Errors

A cone-cut occurs when

You will need to take a retake on your patient's mandibular right premolars because of overlapping.The overlapping is more excessive toward the mesial of the film than the distal of the film.What do you need to do to prevent this error on the retake?

Blurred images appear on the dental image when

What is the cause of a double exposure?

When overlapped contacts appear on a dental image,the cause is

To avoid a double exposure,

When the distal surfaces of the canines are not visible on a premolar bite-wing image,the solution is to

Short teeth with blunted roots appear on the image when

A thin radiolucent line appears on the film with

When the occlusal plane appears tipped or tilted,the error is a(n)

To prevent a dropped receptor corner,

An unexposed sensor appears

Radiation History

Radiation Physics

Radiation Characteristics

Radiation Biology

Radiation Protection

Dental X-Ray Equipment

Dental X-Ray Film

Dental X-Ray Image Characteristics

Dental X-Ray Film Processing

Quality Assurance in the Dental Office

Dental Radiographs and the Dental Radiographer

Patient Relations and the Dental Radiographer

Patient Education and the Dental Radiographer

Legal Issues and the Dental Radiographer

Infection Control and the Dental Radiographer

Introduction to Radiographic Examinations

Paralleling Technique

Bisecting Technique

Bite-Wing Technique

Occlusal and Localization Techniques

Panoramic Imaging

Extraoral Imaging

Imaging of Patients With Special Needs

Digital Imaging

Three-Dimensional Digital Imaging

Normal Anatomy: Intraoral Images

Film Mounting and Viewing

Normal Anatomy: Panoramic Images

Introduction to Image Interpretation

Descriptive Terminology

Identification of Restorations, dental Materials, and Foreign Objects

Interpretation of Dental Caries

Interpretation of Periodontal Disease

Interpretation of Trauma and Pulpal and Periapical Lesions

Filters