The bulging abutment at the cervix is less prominent when a straight abutment is used and prepared (Fig.12, 4.5x5.5(5) mm). The 1-piece implant at #23 is prepared to be parallel to that at #25 or 27.
Xin Wei, DDS, PhD, MS 1st edition 10/19/2017, last revision 05/12/2020