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

Question 1

(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.

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.

Answer 1

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

Question 2

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

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

Answer 2

endodontically

Question 3

Diatorics are found in

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

Answer 3

anterior porcelain denture teeth.

Question 4

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

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

Question 5

Identify the restoration your patient has on tooth number 30.

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

Question 6

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

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

Question 7

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.

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

Question 8

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?

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

Question 9

A porcelain-fused-to-metal crown appears

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.

Question 10

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

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

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.

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

Question 12

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

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

Question 13

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?

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

Question 14

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

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

Question 15

Porcelain restorations are

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

Question 16

The greatest potential negative consequence of an amalgam overhang is

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

Question 17

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

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