Impact of the removal of filling material from the post space with ultrasonic insert and magnification with a surgical microscope on the bond strength and adhesive interface of multifilament fiberglass posts onto flat-oval root canals

Abstract

• Higher BS was found for MFPs compared to conventional fiberglass posts. • Ultrasonic tip filling removal results in higher BS and better adaptation of MFPs. • Highest BS was found for the use of ultrasonic tip with surgical microscopy.