When the crown/abutment is loose for the 3rd time 13 months post cementation, the existing screw driver with a created slot (for retention) is buried without plumber tape after retorque at 35 Ncm (Fig.13).  A tissue-level implant should have been used.

Sinus Lift without Guide  Last  Next

Xin Wei, DDS, PhD, MS 1st edition 01/07/2020, last revision 01/07/2020