Comparative Evaluation Of Push Out Bond Strength Of Endosequence Bc Sealer As Against Mta Plus Sealers When Used With Different Obturation Techniques

Abstract

New technologies have led to the concept of recent bioactive dental materials, which makes the majority of today’s dentists to produce substantial endodontic results. The introduction of advanced material science made tremendous changes in the dental practice. Aim and Objectives : Aim of this study was to assess and compare the push-out bond strength of Endosequence Root Repair Material (ERRM putty), White Mineral trioxide aggregate (WMTA) and Biodentine after incubation in phosphate buffered saline (PBS) for 7 days, 30 days and 45 days. Materials and methods : 90 extracted single rooted human premolar teeth were used in this study. To avoid the desiccation of teeth after extraction, the teeth were kept in hydrogen peroxide solution and washed under tap water. Then the teeth were cleaned with pumice and stored in normal saline at 37˚C until use. The middle 1/3rd portion of each root was sectioned at right angle to the long axis to produce discs of 2.00 ± 0.05 mm thickness using a diamond disc with continuous water irrigation. Finally, 90 root slices were produced. The specimens were dipped in 17% EDTA for 3 min followed by 3 % NaOCl for the same period of time and then rinsed with distilled water and dried. The specimens were divided randomly into 3 groups: Group I- ERRM, Group II - White MTA, Group III- Biodentine. PBS solution was changed every 5 days to replenish the buffering capacity of the PBS. All specimens were incubated at 37ºC. After the completion of experiments, the specimens were sent to the push-out test. Analysis of data was analyzed using descriptive and inferential statistics both. The software SPSS 17.0, EPI_INFO 6.0 version and Graph Pad Prism 5.0 version was used and p<0.05 is considered as level of significance. Result and conclusion : Highest push out bond strength was seen with ERRM at all incubation times followed by mineral trioxide aggregate and Biodentine .It has been observed that increase in the incubation time had increased push-out bond strength of the material significantly.