An in vitro comparative stereomicroscopic evaluation of marginal seal between MTA, glass inomer cement & biodentine as root end filling materials using 1% methylene blue as tracer

Abstract

The aim of this study was to comparatively evaluate stereomicroscopically the microleakage of three root end filling materials Mineral Trioxide Aggregate (MTA), Glass Inomer Cement (GIC) & Biodentine using dye penetration. Thirty extracted human maxillary central incisors were instrumented and obturated with gutta percha using lateral compaction technique. Following this, the teeth were stored in saline. After one week the teeth were apically resected & standardized root end cavities were prepared. The teeth were then randomly divided into 3 groups of 10 specimens each & were filled with Group – I: MTA, Group – II: GIC & Group – III: Biodentine. The samples were coated with varnish & after drying, they were immersed in 1% methylene blue dye for 72hrs. The teeth were then sectioned longitudinally & examined under stereomicroscope. The depth of dye penetration was measured in millimeters. Results: Microleakage was found to be significantly less in Biodentine.