Deck 3: Radiographic Appearance of Dental Materials and Foreign Objects

Question 1

Which of these dental anomalies will NOT be recorded on a dental radiograph?

A) Dilaceration
B) Mesiodens
C) Gingival recession
D) Dens in dente

Answer 1

Gingival recession

Question 2

Which of the following restorative crown types appears the least radiopaque?

A) Porcelain fused to metal
B) Full metal
C) Stainless steel
D) Porcelain

Answer 2

Porcelain

Question 3

Which of these statements is FALSE?

A) Post and core restorations resemble implants radiographically.
B) Retention pins have a shape that is easy to identify on the radiograph.
C) Retention pins are located in the dentin only.
D) Post and core restorations are always observed in conjunction with endodontic filling material.

Answer 3

Post and core restorations resemble implants radiographically.

Question 4

Each of the following is true regarding the radiographic appearance of composite restorations EXCEPT one. Which one is the EXCEPTION?

A) They may appear either radiopaque or radiolucent.
B) They may appear with irregular or diffuse margins.
C) They may mimic caries.
D) They may appear about the same density as cementum.

Question 5

Which of the following restorative materials appears the most radiolucent?

A) Silicate
B) Gutta-percha
C) Stainless steel crown
D) Implant

Question 6

Which of the following restorative materials may appear radiopaque or radiolucent?

A) Amalgam
B) Sealants
C) Composite
D) Gold

Question 7

Base material (calcium hydroxide pastes) and cements exhibit approximately the same degree of radiopacity as:

A) enamel.
B) dentin.
C) bone.
D) amalgam.

Question 8

Each of the following dental materials might not be imaged on a dental radiograph or may be only slightly visible EXCEPT one. Which one is the EXCEPTION?

A) Acrylic resins
B) Sealants
C) Silver points
D) Base materials

Question 9

Which of these restorative materials will appear the most radiopaque on a dental radiograph?

A) Post and core
B) Composite
C) Porcelain
D) Gutta-percha

Question 10

Which of these sequences of interpreting radiographic images is recommended?

A) Examine the teeth, determine the location of the suspected caries and periodontal disease, check the condition of restorations, and identify landmarks.
B) Identify landmarks, examine the teeth, check the condition of restorations, and determine the location of the suspected caries and periodontal disease.
C) Determine the location of the suspected caries and periodontal disease, examine the teeth, identify landmarks, and check the condition of restorations.
D) Check the condition of restorations, determine the location of the suspected caries and periodontal disease, identify landmarks, and examine the teeth.

Question 11

Radiographs are helpful in revealing each of the following EXCEPT one. Which one is the EXCEPTION?

A) Amalgam particles in soft tissue
B) Bluish-colored gingiva
C) Base material
D) Overhanging restorations

Question 12

Each of the following dental materials may be observed within the pulp chamber and/or root canals of the tooth EXCEPT one. Which one is the EXCEPTION?

A) Post and core
B) A silver point
C) Gutta-percha
D) An implant

Question 13

Which of these statements regarding the radiographic appearance of dental materials is FALSE?

A) A full metal crown may be distinguished from amalgam by its smooth margins.
B) A stainless steel crown has a see-through appearance.
C) A porcelain jacket appears more radiopaque than a full metal crown.
D) Porcelain appears about the same density as dentin.

Question 14

Each of the following must be added to radiographic findings for accurate diagnosis EXCEPT one. Which one is the EXCEPTION?

A) Medical and dental history
B) Clinical observations
C) Signs and symptoms
D) Past radiation exposure

Question 15

Which of these will appear radiopaque?

A) An abscess
B) A cyst
C) A granuloma
D) Osteosclerosis

Question 16

Which of the following dental materials will most likely have a see-through appearance radiographically?

A) A stainless steel crown
B) Gutta-purcha
C) A temporary filling
D) Acrylic resin

Question 17

Each of the following should be determined from the radiographic image EXCEPT one. Which one is the EXCEPTION?

A) The identity of the anatomical landmark
B) The normal size and shape of the anatomical landmark
C) Whether the anatomical landmark is in the appropriate region
D) Whether pathosis if the anatomical landmark is absent

Question 18

Which of these restorative materials will appear the most radiopaque on a dental radiograph?

A) Cement
B) A temporary filling
C) Gold
D) Base material

Question 19

Which of the following terms means "the absence of teeth"?

A) Supernumerary
B) Anodontia
C) Anomaly
D) Mesiodens

Question 20

On a radiograph, an amalgam tattoo may appear as a(n):

A) radiolucency.
B) radiopacity.
C) bluish-colored irregularity.
D) overhang.

Question 21

A condition where the cementum of adjacent teeth is joined together is called "condensing osteitis."

Question 22

A torus is a bony growth projecting outward from the surface of a bone.

Question 23

Hypercementosis appears radiopaque and is caused by excessive cementum formation.

Question 24

A cyst is an epithelium-lined sac containing fluid or other fibrous or solid material that appears radiolucent.

Question 25

An odontoma often appears as a mixed radiopaque and radiolucent mass of enamel and dentin.

Question 26

Internal root resorption is most often characterized by root-end resorption where the roots of the teeth appear shorter than normal.

Question 27

Radiographs can be used to determine an overhang.

Question 28

A taurodont tooth is a single tooth bud that divides and forms two teeth.

Question 29

The term "idiopathic resorption" can apply to either external or internal resorption.

Question 30

Resorption that follows a path from inside out, or a widening of the root canal of the tooth, is external resorption.

Question 31

Unless a cyst is completely removed at the time of tooth extraction, it will remain and is then called a "radicular cyst."

Question 32

The endodontic filling materials gutta-percha and silver points cannot be distinguished radiographically.

Question 33

Fusion occurs when a single tooth bud divides and forms two teeth.

Question 34

Dilaceration occurs as an unnatural or sharp bend in the tooth root.

Question 35

Hypercementosis is distinguished from other radiopacities in bone by the absence of the periodontal ligament space.

Question 36

A nonodontogenic cyst arises from epithelial cells associated with the development of a tooth.

Question 37

The dentigerous cyst is an odontogenic cyst that develops at the apex of a nonvital tooth.

Question 38

When a developmental anomaly occurs in which the enamel invaginates within the body of the tooth, it is called "mesiodens."

Question 39

A granuloma is a mass of granulation tissue.

Question 40

An acute abscess may be barely discernable radiographically.

Question 41

What is the term used for a region of abnormally dense bone, which, as a result of infection, has not developed?

Question 42

What is the most commonly encountered form of benign tumor in the arches?

Question 43

Thin radiolucent lines that demarcate a region of bone or tooth separation are called what?

Question 44

What is the name of the process characterized by root-end resorption in which the roots of the teeth appear shorter than normal?

Question 45

What is the most common odontogenic tumor?

Question 46

What is the term applied to tumors that do little or no harm?

Question 47

What is the term used for calcifications that may occur in the dental pulp of some teeth?

Question 48

What type of temporary restoration has a "see-through" appearance on the radiograph?

Question 49

What type of malignant tumor arises from an epithelial origin?

Question 50

What type of resorption appears as a radiolucent widening of the root canal?