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Fig.10: 3.5 months postop. After reprep, the retention groove is straight (*). There is a bubble in the middle of the retention groove of the impression. Please block it in the die appropriately. Do not block the retention groove in the apical end, near the junction of the implant and the abutment (arrowheads).
Xin Wei, DDS, PhD, MS 1st edition 09/12/2015, last revision 01/19/2018