Allograft placed around the implant (Fig.9 *) appears to be able to prevent implant thread exposure 4 months postop (Fig.12).  PA is taken when the crown is cemented (Fig13).  Four months postop cementation of #8 crown (10 months postop), the patient returns because of #9 mobility (Fig.14).

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Xin Wei, DDS, PhD, MS 1st edition 06/05/2020, last revision 06/07/2020