“…However, almost all the CA7 specimens could withstand the ultimate tensile force owing to the simple addition of the small cavity angle to the casting medium. This indicates that another bonding mechanism, the so-called wedging effect [1,2,18] produced by friction between the surface of the wire and the conical casting medium, significantly increased the bonding resistance of the socket terminations. The casting temperatures of the Zn-Cu alloy in the CT510 and CT560 specimens were 510°C and 560°C, respectively, which were higher than that of the BAS specimens (460°C).…”