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DANB RHS Exam Review | Questions And Answers Latest {} A+ Graded | 100% Verified
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DANB RHS Exam Review | Questions And Answers Latest {2024- 2025} A+ Graded |100% Verified
A step wedge can be used to demonstrate
A. penumbra
B. film contrast
C. magnification of image
D. film composition - B
On a radiograph, what is the dense radiopaque band that outlines the edge of the mandible?
A. Mylohyoid ridge
B. Inferior border
C. Mental protuberance
D. Oblique ridge - B
Which the following quality control tests evaluates safe lighting in the darkroom?
A. Timer test
B. Step wedge
C. Coin test
D. Normalizing device - C
Which film would be exposed to see the relationship of the alveolar bone?
A. Vertical bitewing
B. Periapical
C. Horizontal bitewing
D. Occlusal - A
The use of a thyroid collar is recommended for all of the following radiographic exposures EXCEPT?
,A. bitewing
B. occlusal
C. periapical
D. panoramic - D
Which of the following results in a double image radiograph?
A. Processing two exposed films together
B. Exposing a duplicating film
C. Exposing the same film twice
D. Processing two unexposed films together - C
Which of the following would cause a radiopaque artifact on a radiograph?
A. Metallic partial denture
B. Provisional restoration
C. Soft tissues of the buccal mucosa
D. Soft tissues surrounding the bone - A
A radiograph will automatically be retaken when there is a
A. cone cut
B. scratched film
C. double exposure
D. bent film - C
Which of the following condition may mimic caries on an intraoral radiograph?
A. Root resorption
B. Residual cysts of the mandible
C. Secondary dentin formation
D. Pulp stones - A
,Which of the following lesions appears radiopaque on a radiograph?
A. Periapical abscess
B. Sclerotic bone
C. Dentigerous cyst
D. Metastatic carcinoma - B
Which of the following radiation effects increase in severity as more radiation is absorbed by somatic
cells?
A. Cumulative
B. Nonstochastic
C. Long-term
D. Stochastic - B
Which of the following can help to protect patients from excess radiation damage to tissues?
A. Slow film speed
B. Short cone paralleling
C. Round collimation
D. High kVp - D
The most important step the dentist can take in protecting patients from x-radiation is to
A. avoid filtration
B. property use collimation
C. property prescribe radiographs
D. avoid position devices - C
The positioning-indicating device (PID) shape that most effectively reduces patient exposure to radiation
is
A. round
B. rectangular
C. conical
, D. oblong - B
Which of the following may cause unnecessary radiation exposure to the patient?
A. Standard radiographs during recall appointment
B. Endodontic radiographs
C. Radiograph technique errors
D. Standard radiographs during exam appointment - C
Storing unexposed radiographic film in high humidity conditions may cause
A. film browning
B. film fog
C. cracks in the emulsion
D. herringbone effect - B
Added filtration in the x-ray tube head protects the
A. environment
B. operator
C. dentist
D. patient - D
The best way a dental assistant can minimize cross-contamination when exposing radiographs is to
A. disposed of items according to regulations
B. prepare the room after the patient is seated
C. wash hands before and after procedures
D. touch as few of surfaces as possible - D
The occlusal plane will appear diagonal in the radiograph when there is a/an
A. Bent film corner
B. incorrect film placement
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