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After osteotomy using bone-level implant guide at #4, the crown and abutment at #3 has to be removed to place a 4x14 mm tissue-level dummy implant because of the narrow space of #4 and initial implant placement angulation (Fig.1).
Xin Wei, DDS, PhD, MS 1st edition 04/30/2019, last revision 05/01/2019