The majority of the bone graft is lost without immediate provisional in 4 months (Fig.9 * (<: socket shield)).  Then a 5.5x5 mm healing abutment is inserted for impression next appointment.   A 5.2x4.5(4) mm cemented abutment is placed before impression (Fig.10).

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Xin Wei, DDS, PhD, MS 1st edition 02/03/2020, last revision 03/15/2020