3. Density values
correspond to a
range of numbers
Hounsfield scale
PRINCIPLES
HOUNSFIELD SCALE : DENSITY
+1000 HOUNSFIELD UNITS
-1000 HOUNSFIELD UNITS
4.
5. APPLICATIONS : ROOT AND ROOT CANAL MORPHOLOGY
2D RADIOGRAPH
SHOWINGUNUSUAL
AND DILACERATED
APICALTHIRD.
CT IMAGING
PRIOR
TOTREATMENT
CT IMAGE
SHOWING
UNTREATED
CANALS IN
BOTH
MESIAL
AND DISTAL
ROOTS IN
AXIAL AND
CORONAL
VIEWS
Cone Beam CT clearly shows the anatomy where the periapical X-ray didn’t.
IOPA SHOWS A LESION POSSIBLY ASSOCIATED WITH THE M/B ROOT OF THIS UPPER MOLAR BUT THE CT CLEARLY SHOWS that it’s the palatal root that is fractured. The right side iopa shows no bone obvious loss. Here comes the ct showing obvious bone loss consistent with vertical fracture over 7 mm below the crest of bone.
This case illustrates the value of Cone Beam CT in evaluating the location and extent of resorptive defects in teeth.The Periapical X-ray hints at the lesion but the CBCT clearly shows the location and size.
