To determine whether the distance between the post and the residual gutta-percha is related to the clinical outcome of the endodontic treatment.
Materials and Methods:
– n: 94 RC treated teeth with PA dx of normal AP tissue at the time of RCT. Teeth that received post and core restoration were evaluated radiographically from 1-5 years F/U.
-The teeth were divided into three groups:
(I) no gap between the gutta-percha and the post;
(II) a gap of 0 to 2 mm;
(III) a gap of more than 2 mm.
-A PA dx was made following these criteria:
-Normal: no radiolucency in the periapical area and intact (PDL).
-Disease: periapical radiolucency or widening of the PDL space
Most Highlighted Results:
⁻62% of teeth were found to have a gap.
⁻ 61% of sample were diseased.
⁻71% of teeth in grp III were diseased, 46% diseased in gp II, and 17% diseased in gp I.
⁻The time elapsed between RCT and post preparation and cementation was sig diff in gp.III between ≤1 year and >1 years.
Posts placed following root-canal treatment should be in contact with the residual gutta-percha.