A comparati ve study of the sealing ability of different root end-filling mat erials : an in vitro study

الملخص EN

The purpose of the present study is to compare the sealing ability of three different root-end filling materials, namely: MTA, composite resin with Clearfil SE (Kuraray) two-step selfetching adhesive and composite resin with Excite (Ivoclar-Vivadent) two-step adhesive with phosphoric acid etching in root-end filling cavities prepared by burs or ultrasonic retrotips.

The resected roots is resected in different angulations, 45o beveled and non-beveled resected roots.

120 single canal teeth were divided into two groups according to beveling of resected root (45o bevel and no bevel).

The two groups were furtherly divided into 4 subgroups due to instrument used in root-end cavity preparation (burs - Ultrasonic tips).

The subgroups were divided into subdivision according to material used for filling.

Dye penetration method was used to evaluate the sealing ability of the fillings.

The results showed that MTA has significantly the highest sealing ability followed by Composite bonded with Clearfil-SE-Bond and the least sealing ability was reported by Composite resin bonded with Excite bonding agent.

The results of the study concluded that the best sealing ability gained with no beveling of resected root, using of ultrasonic tips in root-end cavity preparation and MTA as root-end filling material.