|
|
After free hand osteotomy at #4, a 4.5x20 mm tap achieves stability when it is partially inserted (Fig.1). To enhance stability, the tap is seated deeper to break the sinus floor and later to push allograft up after insertion of PRF. In fact 17 mm long implant is enough.
Xin Wei, DDS, PhD, MS 1st edition 08/27/2019, last revision 02/16/2020