RDA Texas exam questions and answers
Dental Radiology CORRECT ANSWERS use of radiant energy in diagnosis/ treatment
of diseases in head or neck
Radiograph CORRECT ANSWERS shadow picture produced by images of teeth and
tissues by means or x-radiation
Dental radiography CORRECT ANSWERS photographically recording images of teeth
and surrounding structures through x-radiation
Periapical CORRECT ANSWERS records entire tooth
Interproximal ( bitewing) CORRECT ANSWERS records equally crowns of maxillary
and mandibular teeth
Occlusal - ON TEST CORRECT ANSWERS visualizes major portion of maxillary and
mandibular on one film
Panoramic CORRECT ANSWERS entire maxillary and mandibular and boney
structures
Extra oral CORRECT ANSWERS panoramic, cephlometric
Cephlometric CORRECT ANSWERS takes measurements for tooth movement
Radiolucent - ON TEST CORRECT ANSWERS medium grey to black, more radiation
passes through
Radiopaque - ON TEST CORRECT ANSWERS white/ light grey, radiation absorbed
DOES NOT reach film
Beam indication device ( BID ) CORRECT ANSWERS extension of tubehead, indicates
position, direction and size of radiation field
Arm of x-ray unit CORRECT ANSWERS moves and supports tubehead
Yoke of x-ray unit CORRECT ANSWERS moves and supports tubehead ( structure )
Tubehead CORRECT ANSWERS produces x-ray
Central ray CR CORRECT ANSWERS beam of x-rays through center of BID
Vertical angulation CORRECT ANSWERS vertical with CR above or below the occlusal
, Positive vertical angle CORRECT ANSWERS CR directed down towards occlusal
Negative vertical angle CORRECT ANSWERS CR directed upward towards occlusal
Occlusal plane CORRECT ANSWERS horizontal from wall to wall between maxillary
and mandibular teeth parallel to the floor
Horizontal angulation CORRECT ANSWERS tubehead in horizontal position
Midsagittal plane CORRECT ANSWERS vertical from floor to ceiling through middle of
head
Who should be the only ones in the room during a x-ray - ON TEST CORRECT
ANSWERS operator and patient
What is required for x-rays CORRECT ANSWERS lead apron
What should the operator due to prevent radiation CORRECT ANSWERS stand 6ft
away and not in direct line of x-ray
What is PPE CORRECT ANSWERS Personal Protection Equipment
Infection control in darkroom - ON TEST CORRECT ANSWERS place film on covered
workspace, change gloves before opening film, remove gloves before handling
developed film
Factors in image quality, 3 CORRECT ANSWERS is the image sharp, same size as
object, and same shape as object
Rules of shadow casting projection geometry - ON TEST CORRECT ANSWERS object
to film should be parallel, source should be perpendicular to object and film
Detail - ON TEST CORRECT ANSWERS overall sharpness of image
Contrast - ON TEST CORRECT ANSWERS number of shades of grey visible on film
High contrast - ON TEST CORRECT ANSWERS mainly black and white with few
shades of grey
Low contrast - ON TEST CORRECT ANSWERS appears dull with many shades of grey
and no dark black or bright white
Density - ON TEST CORRECT ANSWERS overall darkness of processed radiograph
What are x-rays - ON TEST CORRECT ANSWERS energy similar to visible light, radio,
and tv waves/ cosmic radiation
Dental Radiology CORRECT ANSWERS use of radiant energy in diagnosis/ treatment
of diseases in head or neck
Radiograph CORRECT ANSWERS shadow picture produced by images of teeth and
tissues by means or x-radiation
Dental radiography CORRECT ANSWERS photographically recording images of teeth
and surrounding structures through x-radiation
Periapical CORRECT ANSWERS records entire tooth
Interproximal ( bitewing) CORRECT ANSWERS records equally crowns of maxillary
and mandibular teeth
Occlusal - ON TEST CORRECT ANSWERS visualizes major portion of maxillary and
mandibular on one film
Panoramic CORRECT ANSWERS entire maxillary and mandibular and boney
structures
Extra oral CORRECT ANSWERS panoramic, cephlometric
Cephlometric CORRECT ANSWERS takes measurements for tooth movement
Radiolucent - ON TEST CORRECT ANSWERS medium grey to black, more radiation
passes through
Radiopaque - ON TEST CORRECT ANSWERS white/ light grey, radiation absorbed
DOES NOT reach film
Beam indication device ( BID ) CORRECT ANSWERS extension of tubehead, indicates
position, direction and size of radiation field
Arm of x-ray unit CORRECT ANSWERS moves and supports tubehead
Yoke of x-ray unit CORRECT ANSWERS moves and supports tubehead ( structure )
Tubehead CORRECT ANSWERS produces x-ray
Central ray CR CORRECT ANSWERS beam of x-rays through center of BID
Vertical angulation CORRECT ANSWERS vertical with CR above or below the occlusal
, Positive vertical angle CORRECT ANSWERS CR directed down towards occlusal
Negative vertical angle CORRECT ANSWERS CR directed upward towards occlusal
Occlusal plane CORRECT ANSWERS horizontal from wall to wall between maxillary
and mandibular teeth parallel to the floor
Horizontal angulation CORRECT ANSWERS tubehead in horizontal position
Midsagittal plane CORRECT ANSWERS vertical from floor to ceiling through middle of
head
Who should be the only ones in the room during a x-ray - ON TEST CORRECT
ANSWERS operator and patient
What is required for x-rays CORRECT ANSWERS lead apron
What should the operator due to prevent radiation CORRECT ANSWERS stand 6ft
away and not in direct line of x-ray
What is PPE CORRECT ANSWERS Personal Protection Equipment
Infection control in darkroom - ON TEST CORRECT ANSWERS place film on covered
workspace, change gloves before opening film, remove gloves before handling
developed film
Factors in image quality, 3 CORRECT ANSWERS is the image sharp, same size as
object, and same shape as object
Rules of shadow casting projection geometry - ON TEST CORRECT ANSWERS object
to film should be parallel, source should be perpendicular to object and film
Detail - ON TEST CORRECT ANSWERS overall sharpness of image
Contrast - ON TEST CORRECT ANSWERS number of shades of grey visible on film
High contrast - ON TEST CORRECT ANSWERS mainly black and white with few
shades of grey
Low contrast - ON TEST CORRECT ANSWERS appears dull with many shades of grey
and no dark black or bright white
Density - ON TEST CORRECT ANSWERS overall darkness of processed radiograph
What are x-rays - ON TEST CORRECT ANSWERS energy similar to visible light, radio,
and tv waves/ cosmic radiation
