When the patient returns nearly 7 months post cementation, bone density immediately next to the implant (including sinus lift) increases (Fig.14).  Mesial residual cement or porcelain to close the gingival embrasure (Fig.15,16) is inaccessible because the crown margin (especially buccally) is more cervical than the abutment margin (Fig.17).

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Xin Wei, DDS, PhD, MS 1st edition 12/28/2016, last revision 12/26/2019