Egress of irritants from the root canal system into the periapical tissues is the main cause of failure following periapical surgery. A root-end filling material should meet some standard features such as: biocompatiblity, dimensional stability, good handling properties, enough working time, and excellent sealing ability. Many materials have been used as root-end fillings. Resilon is one of the most recent root canal filling materials which, creates an adhesive bond of the solid material and the sealer to the root dentin walls. The aim of this study was to compare the root-end sealing ability of the Resilon/Epiphany to Pro Root-MTA using a bacterial and dye leakage test design.
Methods: Ninety-two single-rooted extracted human teeth were selected for this study. The same chemomechanical approach was used for endodontic preparation of the teeth (crown-down technique to the size of 40/0.06). Pro Root-MTA and Resilon/Epiphany were used as root end filling materials. The specimens were randomly divided into four groups (n=20). Twelve specimens were determined as negative and positive control group. Microleakage was assessed for both root end filling materials and control groups using bacterial and dye leakage test. For bacterial leakage test, teeth were exposed to Enterococcus faecalis infected-TSB at their coronal side. Bacterial leakage was monitored every 24 h for 70 days. 1% solution of methylene blue with 72hour- exposure time was used for dye leakage test. Dye leakage was assessed by stereo-microscope with a magnification of x40.
Results:
In the bacterial leakage test, after 70 days there was no statistical difference between Pro Root- MTA (55%) and Resilon/Epiphany (65%). In addition, the dye penetration test showed no significant difference between Pro Root-MTA (20%) and Resilon/Epiphany (15%).
Conclusions:
Resilon may be a worthwhile root-end filling material if a proper isolation at the surgical site is possible.