The shield associated with the closed technique is exposed nearly 2 months postop (Fig.7), while the one associated with the open technique is not (Fig.8).  The buccal plate is minimally atrophic with the closed technique, since the hard tissue support is present.

Open & Closed Last Next

Xin Wei, DDS, PhD, MS 1st edition 11/30/2019, last revision 11/30/2019