الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
The purpose of this study was to evaluate the bond strength and adaptabilily of tree endodontic root canal sealers to human root canal dentin after preconditioning
with NaOCI , EDTA and Laser irradiation . Ninety recent
exffacted human permanent mandibular premolar were used in this study . The crowns of all teeth were removed at the
level of cementoenamel junction and all root canals rvere instrumented with crown down technique