JEndo 2009: Outcome of root canal treatment in dogs determined by periapical radiography and cone-beam computed tomography scans. Flashcards Preview

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Flashcards in JEndo 2009: Outcome of root canal treatment in dogs determined by periapical radiography and cone-beam computed tomography scans. Deck (7)
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1
Q

Authors?

A

Garcia de Paula-Silva DDS

2
Q

Why is apical radiolucency alone insufficient to determine success of RCT?

A

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

3
Q

What is the negative predictions give value of radiographic signs of PA lucency in dogs

A

55% This means that when an intact periradicular region was diagnosed radio- graphically, only 55% of the cases were uninflamed histologically.

4
Q

How were treatment outcomes evaluated?

A

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.

5
Q

how many more unfavourable outcomes were detected by CBCT than PR?

A

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

6
Q

What was the % of favorable outcome using PRs compare to using CBCT?

A

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).

7
Q

What was the difference between one and two visit RCT therapy when examined by CBCT and PR?

A

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.

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