The tooth #1 should have been extracted buccodistally (Fig.3,4).  Three or 4 months later, a 5x10 mm implant could be placed distopalatally superiorly to avoid removing the tooth #1 with ~ 1.5 mm clearance (Fig.5).

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Xin Wei, DDS, PhD, MS 1st edition 01/15/2019, last revision 01/20/2019