الفهرس 
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Abstract
The present study was conducted to evaluate clinically and radiographically the use of granular spongy resorbable natural equine bone grafts (BioGen) with resorbable biocollagen membrane in jaw bone defects.
The study was conducted on ten patients who were referred to the Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University. The patients had jaw bone defects related to dental cause.
Surgical procedure
All patients were treated under local anesthesia; a surgical incision was made to create a flap for sufficient visualization and management.
After reflection of the flap, enucleation of the whole pathologic tissue, complete curettage, and irrigation with normal saline were done.
Application of the BioGen bone graft and adaptation of the biocollagen membrane on the defect area were done.
Repositioning of the flap and suturing with 3/0 black silk sutures.
Clinical results
All patients recovered well after surgery, they showed no complications throughout the evaluation period. None of the patients showed any signs of infection or inflammation throughout the study period. Postoperative pain and edema significantly decreased on 7th day postoperatively.
Radiographic results
Standardized periapical x-ray films was taken immediately after operation, one and six months post-operatively using paralleling long cone technique by XCP film holder with rubber base impression bite. The bone density changes at the defect area were evaluated using the Image J software(137).
Radiographic evaluation revealed that the bone density had increased significantly throughout the whole follow-up period.