Narrow Implant M

The palatal gingival margin of the tooth #15 with vertical root fracture is low, consistent with the low palatal plate after extraction (Fig.1 >).  With IS guide, a 5x11 mm IBS implant is placed in the septum with >5 mm the palatal gap.  After underprep in depth, a 3.5x9 mm achieves primary stability (Fig.2,3).  The palatal defect is repaired with allograft (*) and 2 pieces of PRF membrane.  The palatal soft tissue defect appears to have been repaired 6 months postop (Fig.4,5).  When a narrower abutment with longer cuff is placed at #15 (6x4(4) mm in Fig.6, as compared to 6.5x4(3) mm one in Fig.2), there is no gap between the implant and abutment.  In contrast there is one at #13 (Fig.6 <) when a 4x4(4) mm abutment is seated following removal of a 4x4 mm healing abutment.  After use of a 4.6 mm profile drill, the gap disappears (Fig.7).  Impression is taken.

Return to Upper Molar Immediate Implant, Prevent Molar Periimplantitis (Protocols, Table), Trajectory II  Prevent Screw Loosening
Xin Wei, DDS, PhD, MS 1st edition 08/26/2019, last revision 04/13/2020