Radiology M3 - R5 : Radiography techniques Flashcards
what are the three types of intra-oral X rays
periapical
bitewing - horizontal + vertical
Occlusal - maxilla and mandible
what are the three types of Extra oral radiograpgh
Dental panoramic tomogram - DPT
lateral Cephalgram
Posterior - Anterior mandibe
which radiograpghy technique would you use to detect - apical inflammation/infection
periapical
which radiograpghy technique would you use to detect - periodontal problems
periapical
which radiograpghy technique would you use to detect - trauma fractures to tooth/surrounding bone
periapical
which radiograpghy technique would you use to detect - presence/position of unerupted teeth
periapical
which radiograpghy technique would you use to detect - tooth morphology pre extraction
periapical
which radiograpghy technique would you use to detect - endodontics
periapical
which radiograpghy technique would you use to detect - pre/post apical surgery
periapical
which radiograpghy technique would you use to detect - evaluation of implants
periapical
name this technique being used
parralleling technique
in the parlleling technique what is used to facilitate positioning
uses holders to facilitate positioning
in the paralleling technique where would the receptor be located
parallel to the tooth
name this technique
bisected angle
- operator dependant
- not reproducable
- can be done without a holder
holders consist of three parts what are they
- bite block - retain the receptor
- an indicator arm/rod - fits in to the bite block
- an aiming ring - slides on the arm to establish alignment of collimator with receptor
there are two types of holders what are they
anterior and posterior
blue = anterior
yellow = posterior
receptor tooth relationship - the long axis of the film should be parallel to what
the tooth
what will occur if a radiograpgh is taken when the tooth and receptor are not parallel vertically
distortion of image occurs
what does the image indicate
image shows elongation has occured. this is due to the vertical axis of the tooth and the receptor not being parallel.
what does this image show
poor angulation has resulted in elongation
what does this image show
poor angulation resulting in fore-shortening
what would you look for to determine left and right on a radiograph
orientation dot
