The Effect of the Distance Between Post and Residual Gutta-Percha on the Clinical Outcome of Endodontic Treatment

By Moshonov J, Slutzky-Goldberg I, Gottlieb A, Peretz B

Date: 04/2006
Journal: JOE

Summary:  

Purpose:

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.

Clinical Significance:

Posts placed following root-canal treatment should be in contact with the residual gutta-percha.