Post Extraction Changes Following Ridge Preservation Using Partially Demineralized Dentin Block Versus L- PRF Block

"The extracted tooth will undergo grinding using the tooth transformer device. The produced dentin graft will be of a particle size 400-800 μm. Afterwards.~-Prepare the partially demineralized dentin block, the L-PRF membranes will be cut into small pieces and mixed with the dentin particles at a ratio of 2 membranes to 0.5 g of dentin, providing a 1:1 volume ratio. The liquid fibrinogen will be added to the homogeneous mixture, and while shaping the mixture into the desired form it will be gently stirred for approximately 10 seconds. Within a few minutes, the fibrinogen will convert into fibrin primarily from the activated blood platelets in the chopped L-PRF membranes. This process will effectively trap the biomaterial and the L-PRF pieces, forming a sturdy block known as the dentin block, which serves as a convenient and compact graft .The extracted socket will be filled with partially demineralized autogenous dentin graft."

The same procedure will be performed for preparing the L-PRF block by mixing the L-PRF membranes with xenograft. In both groups, the placed graft will be covered with a L-PRF membrane .The L-PRF clots obtained after 12 min of centrifugation will be placed in the Xpression box (IntraSpin, Intra-Lock, Florida, USA) for 5 min to gently compress (by gravity) into membranes.