No cement is visible post cementation (Fig.12 (C: crown)).
Eighteen months post cementation, the patient returns for recementation. After laser gingivectomy and Panavia resin bonding, PA shows residual cement (Fig.13 ^). After repeated removal with Piezo scaler and explorer, the residual cement appears to be smaller, which is ignored. More dismayed is tight mesial contact. Water pik is recommended. When peri-implantitis develops later on, make an incision for cement removal. If the crown is dislodged soon, check whether the existing abutment is loose, remove acrylic in the access hole and remove the abutment. Install a new 4x3 mm one. Trim the abutment carefully and more on the opposing tooth.
Xin Wei, DDS, PhD, MS 1st edition02/02/2015, last revision 07/31/2016