Because of the presence of the abutment (A), the buccal and lingual flaps are approximated without tension (Fig.5).  The abutment also increases the retention of periodontal dressing.  The superior part of the abutment well is intentionally unfilled with Cavit so that periodontal dressing can be squeezed in for increased retention.

One-Drill Osteotomy Last Next Xin Wei, DDS, PhD, MS 1st edition 12/02/2016, last revision 08/18/2018