(A) Balance posterior abutments on master laboratory cast positioned within resin index. (B) Assembled balance abutments in mouth after their relationship has been transferred from the master cast by using the resin index. The central screw has been tightened to retain the abutments in a clinically acceptable position in the mouth. (C) Completed castings in the mouth to verify accuracy-of-fit and relationship within the dental arch. (D) Completed porcelain-metal restorations. (E) Tissue response to single crown replacing natural molar tooth. (F) Another clinical case with implant restoration replacing molar after 5 years of clinical function. Note the excellent bone and soft-tissue response in both (E) and (F)