ENDODONTICS
of periapical, lateral or interradicular chronical
periodontitis (5). The CBCT can provide crucial
information even for the identification of small
periapical lesions, which cannot be identified on
periapical conventional radiograph. Friedman
demonstrated that early endodontic treatment
increases the succes rate of endodontic treatment,
when periapical pathosis was detected on CBCT
prior to conventional radiograph, which could
not reveal the radiolucency yet (6, 7) . Huumonen
proved the accuracy of CBCT in the diagnosis of
chronical periapical periodontitis in the case of
patients with diffuse pain and inconclusive clinical
tests when radiographs showed no pathological
modifications (8).
Unlike the conventional X ray which gives a
two dimensional view, the CT scanner can reveal
all the three dimensions, providing accurate
informations about the size of the radiolucency.
A decrease in size of a periapical radiolucency,
even if the lesion is not completely remineralized,
is a sign of healing (9).
The sensitivity of periapical radiographs is lower
compared with the CBCT (10, 11).
The radiographic outcome determined with PA
radiographs could be untrue (12).
Just CBCT makes accurate diagnosis of periapical
lesions possible, when a lower dose conventional
radiography cannot provide a precise diagnosis.
Limited volume CBCT is preferred. The small size
of the field of view (FOV), the beam collimation,
the shortest time and the smallest voxel decreases
the radiation exposure when using CBCT in
endodontics.
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