Finally using Lindamann bur, the osteotomy is changed so that a 3.5x13 mm 2-piece implant does not need an angled abutment to establish occlusion (Fig.19).  There is one palatal thread exposure.  Allograft is placed circumferentially, followed by Human Amnion-Chorion Allograft and Collagen Plug.  A 4.5x5.5(3) mm appears to be seated incompletely with a gap between the abutment and the implant (Fig.24 <, overtightened?).  A provisional is fabricated after heavy palatal reduction.

Two months later, the provisional fractures. After repositioning the abutment with complete seating and torque (Fig.25), impression is taken.

Graft Before Implant    Last    Next     Low Magnification 

Xin Wei, DDS, PhD, MS 1st edition 03/17/2020, last revision 03/20/2020