DANB RHS EXAM STUDY GUIDE EXAM
PAPER 2026 COMPLETE QUESTIONS AND
ANSWERS GUARANTEED TO PASS
⩥ Cone-cut Appearance: Answer: a clear, unexposed area on the film
⩥ Film Bending Appearance: Answer: film appears stretched & distorted
(all or portion of film)
⩥ Film Creasing Appearance: Answer: a thin radiolucent (dark) line
appears on the film (usually straight)
⩥ Phalangioma Appearance: Answer: patient's finger appears on the film
image
⩥ Double Exposure Appearance: Answer: two (double) images are
superimpose on top of each other
⩥ Patient movement Appearance: Answer: film image is distorted or
blurred
⩥ Incorrect Vertical Angulation Appearance: Answer: short teeth w/
blunted roots appear on the film (foreshortened)
,⩥ Dropped Film Corner Appearance: Answer: the occlusal plane appears
tipped or tilted
⩥ Incorrect Film Placement Appearance: Answer: no apices on the film
⩥ Molar Bite-Wing must include: Answer: Distal 1/2 of second
premolar, all molars present, & both MX & MD molars, & crestal bone
⩥ Reversed Film Appearance: Answer: light images w/ a herringbone
pattern appear on the film
⩥ X-ray Machine Purpose: (2) Answer: 1- produce quality radiographs,
2- detection of disease & lesions for diagnostic purposes
⩥ Federal Regulations- 1968: Answer: Radiation Control for Health &
Safety Act: Standardize performance of x-ray equipment
⩥ Federal Regulations- 1974: Answer: US FDA standardized all
manufacturing of radiographic dental equipment (all machines must
meet this)
⩥ State Gov't Regulations determine when & how dental x-ray
equipment is monitored: Answer: MN- mandatory every 2 years
, ⩥ Tube head or tube housing used to: Answer: produce x-rays
⩥ Extension arm used to: (3) Answer: suspend tubehead, house
electrical wires, & allows movement in all directions & positioning of
the x-ray tubehead
⩥ Control panel used to: (3) Answer: allows for regulation x-ray beam,
control electrical current for generation of X-rays, & house control
buttons and settings
⩥ kvP: Answer: 65-100 kVp range- peak of enegry
⩥ mA: Answer: 7-15 range- amount
⩥ Exposure time: Answer: 1/60th of a second- standard & 1/100th of a
second- digital
⩥ Collimator: Answer: lead diaphragm used to restrict the size of the x-
ray beam (round, rectangular, cone)
⩥ X-ray film holders: Answer: stabe(styrofoam bite block, slimplest),
XCP, Bite tab, EEZE grip, etc.
PAPER 2026 COMPLETE QUESTIONS AND
ANSWERS GUARANTEED TO PASS
⩥ Cone-cut Appearance: Answer: a clear, unexposed area on the film
⩥ Film Bending Appearance: Answer: film appears stretched & distorted
(all or portion of film)
⩥ Film Creasing Appearance: Answer: a thin radiolucent (dark) line
appears on the film (usually straight)
⩥ Phalangioma Appearance: Answer: patient's finger appears on the film
image
⩥ Double Exposure Appearance: Answer: two (double) images are
superimpose on top of each other
⩥ Patient movement Appearance: Answer: film image is distorted or
blurred
⩥ Incorrect Vertical Angulation Appearance: Answer: short teeth w/
blunted roots appear on the film (foreshortened)
,⩥ Dropped Film Corner Appearance: Answer: the occlusal plane appears
tipped or tilted
⩥ Incorrect Film Placement Appearance: Answer: no apices on the film
⩥ Molar Bite-Wing must include: Answer: Distal 1/2 of second
premolar, all molars present, & both MX & MD molars, & crestal bone
⩥ Reversed Film Appearance: Answer: light images w/ a herringbone
pattern appear on the film
⩥ X-ray Machine Purpose: (2) Answer: 1- produce quality radiographs,
2- detection of disease & lesions for diagnostic purposes
⩥ Federal Regulations- 1968: Answer: Radiation Control for Health &
Safety Act: Standardize performance of x-ray equipment
⩥ Federal Regulations- 1974: Answer: US FDA standardized all
manufacturing of radiographic dental equipment (all machines must
meet this)
⩥ State Gov't Regulations determine when & how dental x-ray
equipment is monitored: Answer: MN- mandatory every 2 years
, ⩥ Tube head or tube housing used to: Answer: produce x-rays
⩥ Extension arm used to: (3) Answer: suspend tubehead, house
electrical wires, & allows movement in all directions & positioning of
the x-ray tubehead
⩥ Control panel used to: (3) Answer: allows for regulation x-ray beam,
control electrical current for generation of X-rays, & house control
buttons and settings
⩥ kvP: Answer: 65-100 kVp range- peak of enegry
⩥ mA: Answer: 7-15 range- amount
⩥ Exposure time: Answer: 1/60th of a second- standard & 1/100th of a
second- digital
⩥ Collimator: Answer: lead diaphragm used to restrict the size of the x-
ray beam (round, rectangular, cone)
⩥ X-ray film holders: Answer: stabe(styrofoam bite block, slimplest),
XCP, Bite tab, EEZE grip, etc.
