OPG

 ORTHOPANTAMOGRAM
 Most commonly used for dental implants QN ( BEST is CBCT )

 ANATOMICAL LANDMARKS
o Mental foramen – radiolucency at the apex of premolar
o Zygoma – J shaped radio opacity at 1st or 2nd max molar
o Sinus lining
o Mandibular canal
o Vertebrae – cervical
o Styloid process
o Ear lobe
o Hyoid

ERRORS IN OPG

HEAD placed ———— ———— APPEARANCE
a) Anterior to focal trough ** Blur and narrow
b) Posterior to focal trough Blur and Magnified