JEndo 2009: Outcome of root canal treatment in dogs determined by periapical radiography and cone-beam computed tomography scans. Flashcards
Authors?
Garcia de Paula-Silva DDS
Why is apical radiolucency alone insufficient to determine success of RCT?
When a bone lesion is within the cancellous bone and the overlying cortical bone is substantial, the bone lesion may not be visible. Clinically, it has been reported that a large lesion of up to 8 mm in diameter can be present without radiolucency
What is the negative predictions give value of radiographic signs of PA lucency in dogs
55% This means that when an intact periradicular region was diagnosed radio- graphically, only 55% of the cases were uninflamed histologically.
How were treatment outcomes evaluated?
The treatment outcome for each root was presented in one of the following four categories based on the change of lesions during the 6 months after the treatment: (1) emerged or enlarged, (2) unchanged, (3) reduced, and (4) absent. When a lesion grew or shrank at least 1 mm2 (PRs) or 1 mm3 (CBCT scans), enlargement or reduction of the lesion was determined. The outcome of categories 3 and 4 were considered favorable.
how many more unfavourable outcomes were detected by CBCT than PR?
In groups 1 through 3, a total of 72 roots was treated. Forty-seven roots presenting unfavorable outcomes were detected by CBCT scans, three times more than those detected by PR
What was the % of favorable outcome using PRs compare to using CBCT?
In groups 1, 2, and 3, a favorable outcome (lesions absent or reduced) was shown in 57 (79%) roots using PRs but only in 25 (35%) roots using CBCT scans (p = 0.0001).
What was the difference between one and two visit RCT therapy when examined by CBCT and PR?
Unfavorable outcomes determined by CBCT occurred more frequently after one-visit therapy compared with two-visit therapy. This has not been demonstrated by PR in previous studies.
