Internal Sinus Lift of 1 mm Bone (I)

A 68-year-old timid woman is considering implant at #14 five months post cementation of #13 and 14 crown (Fig.1).  Because of the narrow buccopalatal width (Fig.2 CT coronal section, B: buccal), a 4 mm implant (blue line) seems to be appropriate for the site (Fig.1).  After crestal incision and flap reflection, a diamond round bur is used to thin the sinus floor until the bluish membrane is barely visible.  An osteotome (Magic Sinus Lifter) is used for penetration.  Water lift will be conducted if necessary, considering the already thickened sinus membrane (Fig.3 (CT sagittal section) M).  Insert the first PRF membrane, followed by bone graft (not too sticky) repeatedly.  Use sensor 1 to confirm lift degree.  Try a 4x7 mm dummy FC to test stability.  Place a definitive one (probably Magicore) if indicated.  Use a second PRF membrane before closure of the wound.

Return to Trajectory No Deviation
Xin Wei, DDS, PhD, MS 1st edition 02/03/2020, last revision 04/23/2021