Exam (elaborations)
DANB RHS QUESTIONS AND ANSWERS FULLY SOLVED
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Exam of 9 pages for the course DANB at DANB (DANB RHS)
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DANB RHSUnexposed Film Appearance: - answer clear film w/ a bluish tinge
Film Exposed to White Light Appearance: - answer film appears black
Over Exposed Film Appearance: - answerfilm appears dark
Under Exposed Film: - answerfilm appears light
Premolar Bite-Wing must include: - answerDistal 1/2 canine, all premolars present & 1st
molars of the MX & MD teeth, & crestal bone
Incorrect Horizontal Angulation Appearance: - answeroverlapped contact areas appear
on the film
Cone-cut Appearance: - answera clear, unexposed area on the film
Film Bending Appearance: - answerfilm appears stretched & distorted (all or portion of
film)
Film Creasing Appearance: - answera thin radiolucent (dark) line appears on the film
(usually straight)
Phalangioma Appearance: - answerpatient's finger appears on the film image
Double Exposure Appearance: - answertwo (double) images are superimpose on top of
each other
Patient movement Appearance: - answerfilm image is distorted or blurred
Incorrect Vertical Angulation Appearance: - answershort teeth w/ blunted roots appear
on the film (foreshortened)
Dropped Film Corner Appearance: - answerthe occlusal plane appears tipped or tilted
Incorrect Film Placement Appearance: - answerno apices on the film
Molar Bite-Wing must include: - answerDistal 1/2 of second premolar, all molars
present, & both MX & MD molars, & crestal bone
, Reversed Film Appearance: - answerlight images w/ a herringbone pattern appear on
the film
X-ray Machine Purpose: (2) - answer1- produce quality radiographs, 2- detection of
disease & lesions for diagnostic purposes
Federal Regulations- 1968: - answerRadiation Control for Health & Safety Act:
Standardize performance of x-ray equipment
Federal Regulations- 1974: - answerUS 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: -
answerMN- mandatory every 2 years
Tube head or tube housing used to: - answerproduce x-rays
Extension arm used to: (3) - answersuspend tubehead, house electrical wires, & allows
movement in all directions & positioning of the x-ray tubehead
Control panel used to: (3) - answerallows for regulation x-ray beam, control electrical
current for generation of X-rays, & house control buttons and settings
kvP: - answer65-100 kVp range- peak of enegry
mA: - answer7-15 range- amount
Exposure time: - answer1/60th of a second- standard & 1/100th of a second- digital
Collimator: - answerlead diaphragm used to restrict the size of the x-ray beam (round,
rectangular, cone)
X-ray film holders: - answerstabe(styrofoam bite block, slimplest), XCP, Bite tab, EEZE
grip, etc.
Beam Alignment Device: - answerused to help the radiographer position the PID in
relationship to the tooth and film
X-ray: - answerbeam of energy
Image: - answerpicture or likeness of an object
Receptor: - answersomething that responds to a stimulus
Film Compostion: (4) - answerfilm base, adhesive layer, film emulsion, protective layer
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