الفهرس 
ACKNOWLEDGEMENTOnly 14 pages are availabe for public view
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Abstract
Aim to evaluate antimicrobial efficacy of chamomile and thyme extracts as intra canal irrigants and their effect on the smear layer removal.
Methodology Forty recently extracted single rooted permanent teeth with completely formed roots will be collected then stored in normal saline solution at room temperature. The teeth will be divided into control group of ten roots and experimental group of thirty roots.