الفهرس 
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Abstract
The aim of this study is to compare between the bioactive glass and beta tricalcium phosphate in treatment of intrabony periodontal defect in chronic periodontitis
the present study was conducted for the assessment of the treatment of intraosseous defect and regeneration of the lost tooth supporting structure.The selected ten patients were suffering from intra osseous bony defect and had at least one pair of clinically similar bony defect in ranging age from thirty five to forty four.All patients were chosen to be free from any systemic disease,metabolic or destructive bone disease and no history of medication that can affect bone density