الفهرس 
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Abstract
The aim of the present study was to compare the healing potential of Nanosilver solution (a synthetic metallic nanoparticles material produced by nano-technology) versus chlorhexidine solution (an ideal broad spectrum antimicrobial chemical antiseptic) in treating ulcer induced defect on the lower lip mucous membrane side in a rat animal model through:
*Histological examination.
*Immunohistochemical examination.
*Histomorphometric analysis.
&
*Statistical analysis.