الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Background: The immediate placement of dental implants into fresh extraction sockets has proven to be a safe and predictable procedure. However, there is a lack of scientific evidence regarding the healing pattern and osseointegration associated with immediate implants especially with different grafting materials. Purpose: This study aimed to evaluate clinically and radiographically the success of immediate implant placement in fresh extraction sockets using deproteinized bovine bone (Bio-Oss) oralloplast (Osteon II). Methods: A total of 16 patients, with a mean age of 28.94±5.16, each having maxillary Background: The immediate placement of dental implants into fresh extraction sockets has proven to be a safe and predictable procedure. However, there is a lack of scientific evidence regarding the healing pattern and osseointegration associated with immediate implants especially with different grafting materials. Purpose: This study aimed to evaluate clinically and radiographically the success of immediate implant placement in fresh extraction sockets using deproteinized bovine bone (Bio-Oss) oralloplast (Osteon II). Methods: A total of 16 patients, with a mean age of 28.94±5.16, each having maxillary premolar tooth indicated for extraction, were selected and randomly divided into two groups. Sixteen screw type titanium dental implants (IHDE Dental System, Switzerland) were placed into fresh extraction sockets. Two types of graft materials namely Bio-Oss (deprotienized bovine bone material) for group I and Osteon II (synthetic bone) for group II were packed around dental implants. A collagen membrane used to cover all implants. All implants were evaluated clinically using modified plaque index, modified sulcus bleeding index and periotestand radiographically to assess marginal bone level (MBL) at 3, 6 and 9 months. All clinical and radiographic parameters were subjected to statistical analysis. Result: One implant failed to osseointegratein Osteon II group and the other 15 implants were successful showing favorable clinical and radiographic findings. The mean values of modified plaque index and modified sulcus bleeding index reduced over period of follow up for both groups indicating a sound healthy mucosa around dental implants, with no statistical significant differences between both groups. Periotest evaluation showed that the implants were well osseointegrated and stable with no statistical significant difference between both groups (P= 0.514, 0.738, 0.291). Radiographic analysis revealed that there were no statistically significant differences between both groups in MBL mesially(P=0.904,0.264, 0.726)or distally (P= 0.858, 0.767, 1.000) with a statistically significant increase in MBL through the whole study period. Conclusion:Immediate placement of dental implants intofresh extraction sockets could be considered a valuable option to replace hopeless teeth.The two graft materials, Bio-Oss and Osteon II, have been found to be equally effective and could be used to promote bone regeneration around immediately placed dental implants.