الفهرس 
Evaluation of marginal bone loss after Immediate implant placement in maxillary esthetic zone with nanobone versus xenograft
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Abstract
This study was performed to evaluate marginal bone loss using nanobone (Art-Oss) versus xenograft (Hypro-oss) in immediate implant placement in esthetic zone. Sixteen Neo-biotech two piece implants were conducted in 16 fresh extraction sockets in eleven patients with one or more hopeless teeth indicated for extraction in the region of maxillary anterior teeth. All patients were systemically free and with reasonable oral hygiene.Extraction sockets were randomly distributed into two groups. The first group(group A) received immediate post-extraction implants with nanobone to fill the peri-implant bony defect (jumping gap) While (group B) received immediate post-extraction implants with bovine xenograft to fill the peri-implant bony defect.Preoperative measures were performed including clinical and radiographic assessement to ensure proper case selection. A sulcular mucoperiosteal flap was raised then an atraumatic protocol was followed to deliver the tooth outside the socket. The implants were placed simultaneously in fresh extraction sockets after proper irrigation.The patients of group A received nanobone graft to fill the marginal gap while group B received bovine xenograft. The bovine xenograft and nanobone were mixed with saline and were introduced inside the gap using a graft carrier and condensers.The graft was packed loosely to allow for pooling of blood between the graft particles