Because of the mesial shift of the tooth #15 (Fig.6 arrow (6 months post #14 extraction; anterior open bite)), an angled abutment (5x4mm, 15 degree) is used (Fig.7).
Reduced B-P Width Post Socket Preservation Course 2 3 4
Xin Wei, DDS, PhD, MS 1st edition 02/09/2018, last revision 04/08/2018