Purpose: to investigate the suitability of selected sealers to be used with warm gutta-percha obturation techniques.
•The composition of an experimental sealer (Steptodont) , MTA Fillapex , Apexit Plus ,and AH Plus was assessed by scanning electron microscopic and energy-dispersive spectroscopic analysis.
•The reaction products after setting were assessed by X-ray diffraction analysis and Fourier transform infrared spectroscopy.
•Physical properties : setting time, flow, film thickness were assessed before & after heat application.
FTIS: is a technique used to obtain an infrared spectrum of absorption or emission of a solid, liquid or gas.
Most highlighted Results:
•Experimental tricalcium silicate–based sealer and Apexit Plus contained calcium hydroxide peaks after setting, which were absent in MTA Fillapex . •AH Plus and the experimental sealer were modified by heat; the setting time was reduced, and film thickness increased.
•Experimental sealer exhibited the formation of calcium hydroxide early in the setting process. Thus, this sealer will probably promote bioactivity within the root canal.
•The choice of sealer should be considered when selecting the obturation technique.