Question 1

The greatest potential negative consequence of an amalgam overhang is

Accepted Answer

A) unesthetic contour. 
B) destruction of interproximal bone. 
C) impingement of the interdental papilla. 
D) stretching of periodontal ligament fibers. 
A) unesthetic contour. 
B) destruction of interproximal bone. 
C) impingement of the interdental papilla. 
D) stretching of periodontal ligament fibers. B

Question 2

Gutta percha appears __________.If compared with amalgam,gutta percha appears ________ radiodense.

Accepted Answer

A) radiolucent;more 
B) radiolucent;less 
C) radiopaque;more 
D) radiopaque;less 
A) radiolucent;more 
B) radiolucent;less 
C) radiopaque;more 
D) radiopaque;less D

Question 3

A porcelain-fused-to-metal crown appears

Accepted Answer

A) uniformly radiopaque. 
B) uniformly radiolucent. 
C) to have two components.The metal component appears completely radiopaque,and the porcelain component appears slightly radiopaque. 
D) to have two components.The metal component appears completely radiolucent,and the porcelain component appears slightly radiolucent. 
A) uniformly radiopaque. 
B) uniformly radiolucent. 
C) to have two components.The metal component appears completely radiopaque,and the porcelain component appears slightly radiopaque. 
D) to have two components.The metal component appears completely radiolucent,and the porcelain component appears slightly radiolucent. C

Question 4

Of the nonmetallic restorations,____________ is the most dense and least radiolucent.

Accepted Answer

A) unfilled acrylic 
B) filled acrylic 
C) composite 
D) porcelain 
A) unfilled acrylic 
B) filled acrylic 
C) composite 
D) porcelain

Question 5

Identify the restoration your patient has on tooth number 30.

Accepted Answer

A) Amalgam 
B) Stainless steel crown 
C) Gold crown 
D) Porcelain fused to metal crown 
A) Amalgam 
B) Stainless steel crown 
C) Gold crown 
D) Porcelain fused to metal crown

Question 6

Diatorics are found in

Accepted Answer

A) silver point endodontic fillings. 
B) gutta percha endodontic fillings. 
C) anterior porcelain denture teeth. 
D) anterior acrylic denture teeth. 
A) silver point endodontic fillings. 
B) gutta percha endodontic fillings. 
C) anterior porcelain denture teeth. 
D) anterior acrylic denture teeth.

Question 7

You are looking at your patient's dental images.On tooth number 30,you see a large restoration that has smooth margins,doesn't conform to the tooth,and has a ghostlike radiopaque appearance.Which type of restoration does your patient have on tooth number 30?

Accepted Answer

A) Silver amalgam 
B) Gold crown 
C) Porcelain crown 
D) Stainless steel crown 
A) Silver amalgam 
B) Gold crown 
C) Porcelain crown 
D) Stainless steel crown

Question 8

(1)The metal framework on a removable partial denture appears radiopaque on dental images.(2)The acrylic portion of a removable partial denture appears radiolucent on dental images.

Accepted Answer

A) Both statements are true. 
B) Both statements are false. 
C) The first statement is true;the second statement is false. 
D) The first statement is false;the second statement is true. 
A) Both statements are true. 
B) Both statements are false. 
C) The first statement is true;the second statement is false. 
D) The first statement is false;the second statement is true.

Question 9

Because metallic restorations absorb x-rays,the area of the image that corresponds to their location remains unexposed,and the metallic restorations appear completely ___________ on a dental image.

Accepted Answer

A) radiosensitive 
B) radioresistant 
C) radiopaque 
D) radiolucent 
A) radiosensitive 
B) radioresistant 
C) radiopaque 
D) radiolucent

Question 10

Which of the following is the most common restorative material used in dentistry?

Accepted Answer

A) Porcelain 
B) Cast gold 
C) Amalgam 
D) Acrylic 
A) Porcelain 
B) Cast gold 
C) Amalgam 
D) Acrylic

Question 11

Amalgam overhangs,excess amalgam material that extends beyond the cavity margin,can be seen on dental images in the ____________ region of the crown of the tooth.

Accepted Answer

A) Buccal 
B) Lingual 
C) Interproximal 
D) Occlusal 
A) Buccal 
B) Lingual 
C) Interproximal 
D) Occlusal

Question 12

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

Accepted Answer

A) periodontally 
B) orthodontically 
C) endodontically 
D) nonendodontically 
A) periodontally 
B) orthodontically 
C) endodontically 
D) nonendodontically

Question 13

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?

Accepted Answer

A) Ask your patient. 
B) Perform a clinical examination. 
C) Search on the Internet. 
D) Look in a textbook. 
A) Ask your patient. 
B) Perform a clinical examination. 
C) Search on the Internet. 
D) Look in a textbook.

Question 14

Some manufacturers of composite materials add radiopaque particles to their products to help the viewer differentiate a composite restoration from

Accepted Answer

A) an amalgam restoration. 
B) dental caries. 
C) a cast gold restoration. 
D) a porcelain-fused-to-metal crown. 
A) an amalgam restoration. 
B) dental caries. 
C) a cast gold restoration. 
D) a porcelain-fused-to-metal crown.

Question 15

A thin radiopaque line outlining the prepared tooth may be evident on a dental image of an all-porcelain crown.This thin line represents

Accepted Answer

A) die spacer. 
B) cement. 
C) an air pocket. 
D) a metal substructure. 
A) die spacer. 
B) cement. 
C) an air pocket. 
D) a metal substructure.

Question 16

You are going to take intraoral images on your patient.Which of the following should you ask her to remove?
1)Necklace
2)Eyeglasses
3)Nose ring
4)Hearing aids

Accepted Answer

A) 1,2,3,4 
B) 1,2,3 
C) 2,3,4 
D) 2,3 
A) 1,2,3,4 
B) 1,2,3 
C) 2,3,4 
D) 2,3

Question 17

Porcelain restorations are

Accepted Answer

A) radiolucent. 
B) slightly radiolucent. 
C) slightly radiopaque. 
D) radiopaque. 
A) radiolucent. 
B) slightly radiolucent. 
C) slightly radiopaque. 
D) radiopaque.

Exam 32: Identification of Restorations, dental Materials, and Foreign Objects

The greatest potential negative consequence of an amalgam overhang is

Gutta percha appears __________.If compared with amalgam,gutta percha appears ________ radiodense.

A porcelain-fused-to-metal crown appears

Of the nonmetallic restorations,____________ is the most dense and least radiolucent.

Identify the restoration your patient has on tooth number 30.

Diatorics are found in

You are looking at your patient's dental images.On tooth number 30,you see a large restoration that has smooth margins,doesn't conform to the tooth,and has a ghostlike radiopaque appearance.Which type of restoration does your patient have on tooth number 30?

(1)The metal framework on a removable partial denture appears radiopaque on dental images.(2)The acrylic portion of a removable partial denture appears radiolucent on dental images.

Because metallic restorations absorb x-rays,the area of the image that corresponds to their location remains unexposed,and the metallic restorations appear completely ___________ on a dental image.

Which of the following is the most common restorative material used in dentistry?

Amalgam overhangs,excess amalgam material that extends beyond the cavity margin,can be seen on dental images in the ____________ region of the crown of the tooth.

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

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?

Some manufacturers of composite materials add radiopaque particles to their products to help the viewer differentiate a composite restoration from

A thin radiopaque line outlining the prepared tooth may be evident on a dental image of an all-porcelain crown.This thin line represents

You are going to take intraoral images on your patient.Which of the following should you ask her to remove? 1)Necklace 2)Eyeglasses 3)Nose ring 4)Hearing aids

Porcelain restorations are

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

Exposure and Technique Errors

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

Interpretation of Dental Caries

Interpretation of Periodontal Disease

Interpretation of Trauma and Pulpal and Periapical Lesions

Filters

Gutta percha appears __.If compared with amalgam,gutta percha appears radiodense.