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After additional 2 mm placement of the implant, the distal thread is subcrestal (Fig.5); the mesial margin of a 6.5x4(4) mm abutment is subgingival. A longer cuff (5 mm instead of 4 mm) is more favorable for future restoration.
The abutment margin is completely subgingival 3 months postop (Fig.8 (white dashed line: gingival margin)). It appears that the implant is placed ~ 1 mm deeper than ideal (Fig.9). Diode laser is used for gingivectomy prior to impression.
It seems proper to place an implant at most 3 mm subgingival for flapless approach, since the gingiva may rebound in thickness postop.
Xin Wei, DDS, PhD, MS 1st edition 06/16/2017, last revision 02/16/2019