The empty socket of the tooth #4 is wide buccopalatal (Fig.10 B, P); the buccal plate is resorbed coronally (Fig.10 <) so that a 4.5 or 5 mm in diameter implant should be placed palatal (Fig.11). Use sticky bone to repair the buccal plate defect.
Xin Wei, DDS, PhD, MS 1st edition 05/25/2019, last revision 05/25/2019