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A 4.5x7(4) mm abutment is placed (Fig.13) for a temporary crown as an anchor (Fig.14) to further extrude #27 with continuous inter-arch retraction (to reduce tension upon #26 with severe bone loss (Fig.12)).
Xin Wei, DDS, PhD, MS 1st edition 09/26/2019, last revision 05/06/2020