Objective: The aim of this study was to evaluate the bond strength and adaptability of three obturating materials. Materials and methods: Sixty six single rooted anterior teeth were instrumented up to # 40 and equally assigned into three groups (n=22) and obturated with (Group A: EndoREZ system, B: RealSeal system, and C: AH-Plus sealer, then subdivided into two equal subgroups (n=11) in which the bond strength of the obturating system in subgroup AI, BI and CI was tested using Universal testing machine, while in subgroup AII, BII and CII the adaptability of obturating materials to dentin was examined by stereomicroscope and scanning electron microscope. Results: AH plus presented the highest bond strength with no difference between EndoRez and RealSeal. Adaptability were supported by the SEM presented that group B showed excellent adaptation of gutta-percha to the dentin wall While group A showed good adaptation of gutta-percha to the dentinal wall with small voids along the interface, and group C showed coronal and middle segments were less adaptable to dentin wall than apical third. Conclusion: the monoblock seemed to be illusion and did prove itself.