The crown/abutment at #14 is loose 1 year 10 months post cementation.  After use of 5.5 mm profile drill, the crown/abutment is reseated, but the seating is incomplete (Fig.4 <) because of contact of the abutment with the mesial crest (*).  A larger profile drill does not help (Fig.5).  When a narrower abutment (4.5x7.5(3) mm) is torqued, it appears to be completely seated (Fig.6).  After distal surface adjustment of the abutment, impression is re-taken.  Depth Control   Last   Next  Xin Wei, DDS, PhD, MS 1st edition 01/14/2020, last revision 01/14/2020