الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
Evaluation of the effect of ozone using ozone generator device in wound healing, pain , edema and antimicrobial effect after extraction of bilaterally impacted lower third molar. Comparison between Pederson scale that evaluate the degree of difficulty of surgical extraction of impacted third molar preoperatively and modified parent scale that evaluate the degree of difficulty postoperatively and identify the level of agreement between them.