Phencyclidine (PCP) was originally developed as an anesthetic, but the adverse side effects prevented its use except as a large animal tranquilizer. PCP acts as both a depress â¦ ant and a hallucinogen,and sometimes as a stimulant. It is abused primarily for its variety of mood-altering effects.
1 An inlay- As the name suggests, this restoration sits inside the tooth.  An onlay- In contrast is bonded on top of the tooth, replacing some or all of the cusps of the tooth.
A Discovery Health answered. Gold commonly is used as an inlay for dental fillings. It is not used in its pure form. It is used as an alloy containing metals including copper, silver, platinum, palladium, and zinc. Still, the inlays contain about 75 percent real gold.