The healing screw is removed with difficulty, while a 6x3 mm healing abutment is placed with resistance, probably related to interference from the distal crest (Fig.9 *).  It is much easier with  removal of the crest bone using surgical bur, because of clearance (Fig.10 *).  It is the best to have a particular drill to remove the excess bone.  There is no interference to insert and torque a 5x4(2) mm pair abutment 2 weeks post uncover (Fig.11).  Due to poor trajectory (guide necessity) and tight proximal contact, the crown is not completely seated (Fig.12).  However, the abutment screw is unlikely to get loose in the future.

Secure Landmark for Osteotomy   Last  Next, 1st Year  Screw

Xin Wei, DDS, PhD, MS 1st edition 01/16/2019, last revision 02/23/2021