Dentistry 2 Flashcards
what are the benefits of intraoral radiography?
enables visualization of the entire tooth including roots
facilitates diagnosis
monitors treatment progression
facilitates client education
when taking intraoral rads, what are we trying to acheive?
visualize the entire tooth
diagnose disease/abnormalities
determine treatment plan
which teeth should you radiograph?
ALL OF THEM EVERY TIME
if full mouth rads are not planned then at minimum you should get rads of:
teeth with abnormal probing
areas where teeth are missing
obtain full mouth rads if ANY ______ if discovered
tooth resorption
what is the only setting you can change on the dental xray machine?
time
kvp and mas are fixed
what are the 2 different positioning techniques for dental rads?
parallel (with the roots)
bisecting angle
the parallel technique is used for…
mandibular premolars and molars
the tooth root and the film are parallel to each other
what technique was used to get this image
parallel
bisecting angle technique is used for…
canines, incisors, maxillary premolars and molars
explain how to get a bisecting angle radiograph
use the tooth roots and the film to create an angle. the cylinder should be at the bisecting angle between the two (the cylinder is parallel to the bisecting angle)
which teeth have superimposition of roots?
maxillary 4th premolar aka the carnassial tooth
the carnassial teeth have 3 roots which are:
distal, and then 2 mesial roots: buccal and palatal
what is the “SLOB” rule ?
same lingual, opposite buccal, referring to the direction of the beam (beam shift technique for the carnassial teeth)
the lingual root will shift in the same direction as the beam and the buccal root will move in the opposite direction as the beam. as you do this, keep the angle of the cylinder the same.
describe anterior oblique shift for radiographs of the carnassial teeth
your beam is now coming from the front/anterior
same lingual= the lingual root will move forward/anterior on your image
