With all of measures taken (including periodontal dressing), the distal bone graft (Fig.8 *) is ~ 2 mm coronal to the crestal bone (red arrow) 6 months postop.  G: graft; <: septal crest.  In fact the abutment is incompletely seated.  The temporary crown is perforated.  The gingival cuff is erythematous.  A 6.8x5 mm healing abutment is installed.  When the patient returns for impression, a 4.5x5.5(3) mm abutment is fully seated (Fig.9 <).  The distal height increases by 4 mm because of immediate implant (support).