Abutment Seating Interference
Socket Shield is conducted at #20 (Fig.1-3 *). With placement of a 4x11.5 mm implant equicrestal lingually, a 4.5x6(2) mm temporary abutment is unable to be seated incompletely (Fig.4 black <) because of proximal crestal interference (white arrowheads). After use of a 5.5 mm profile drill, a 5.5x5 mm healing abutment is apparently seated completely (Fig.5). Upon close look, the abutment at #19 is also incompletely seated. In fact #18/19 temporary crowns and #19 abutment are loose. A 6.8x4 mm healing abutment is later placed at #19. Periodontal dressing is applied at #18-20. In fact buccolingual control of osteotomy is not easy with free hand. A smaller implant (e.g., 3.5 mm) may be easier.
Premolar Immediate Implant
Xin Wei, DDS, PhD, MS 1st edition 01/09/2020, last revision 04/12/2020