An alternative approach to increase the height of bone under your sinuses is an osteotome sinus lift. In this procedure, a small amount of bone is left under the sinus cavity floor in the site of an implant placement. Blunt instruments (osteotomes) are used to push up the bone that has been retained, along with the lining of the sinus cavity itself. This raises the floor of the sinus in the local area of the implant placement only, thereby enabling your dentist to place a longer implant of more adequate proportions, which in turn provides more stability and strength to receive the forces of chewing.