In fact a 4.5x4(3) mm cemented abutment is incompletely seated with a gap (<), probably due to interference from the mesial crest. A profile drill should have been used. There is foul smell from the immediate provisional; in fact it may be due to the loose contact between the implant and abutment (Fig.4 < (4 months postop)). The gingiva is unhealthy. A 5.5x5 mm healing abutment is placed.
Xin Wei, DDS, PhD, MS 1st edition 12/05/2019, last revision 01/07/2020