Since the bone at #19 is wide, a 5.5x9 mm FC will be placed after use of 5.0 mm cortical drill. Compare it with 4.5x11.5 mm in length. Prepare IBS kit in case 1 or 2 drills are needed. #15 blade may be required for incision because of the thick soft tissue. Save autogenous bone for re-graft. Or place a 4.5x11 mm FC at the 2nd line and place bone graft around it, particularly buccolingual, since the mesiodistal bone is higher.
Xin Wei, DDS, PhD, MS 1st edition 01/14/2020, last revision 05/30/2020