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The sinus is a hollow area in the upper jaw which one of the most predicable sites for the addition of new bone. Access is made inside the mouth. The sinus-membrane is paper thin and is lifted, allowing a collagen membrane to be placed underneath to act as the floor of the new sinus-cavity. A combination of autogenous, allograft and alloplastic bone products are used to build new bone in this case. PRP and fibrin are sometimes used to promote healing.
Please refer to the bone grafting surgery information to learn more about the bone products.
The surgical site is closed using a synthetic collagen or donor membrane and the gum tissue is sutured over the site and allowed to heal for 6-9 months.
Sinus grafting historically is a very predictable area to add bone.