Step 7. The provisional crown fixation. Individualized provisional acrylic crown will be fabricated before operation and will be adapted and fixed on temporary abutment after implant insertion if there is initial implant stability under 35 Ncm insertion torque. The provisional crown will be cemented with temporary cement. If the implant fails to achieve initial stability under 35 Ncm insertion torque, the provisional acrylic crown would be bonded to the neighboring teeth. In all cases, the provisional crowns are excluded from occlusion. After 6 months, the provisional restorations will be replaced by a permanent cemented or screw-retained zirconia crown.