A 56-year-old woman has sign of periimplantitis 2 years 9 months post cementation.  After incision, the 5.5x13 mm bone-level implant is ~ 3 mm inferior to the buccal crest.  The implant is removed with 7/6 mm trephine bur, elevator and implant driver.  The sinus membrane perforates.  A 8x17 mm tap achieves stability (Fig.1), but the peripheral bone seems to be thin. 

Replacement 劈开术 Last Next

Xin Wei, DDS, PhD, MS 1st edition 08/09/2019, last revision 04/11/2021