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.
Coding inlays, onlays, and crowns. Carol Tekavec, RDH. Coding for inlays and onlays always has been somewhat confusing. By definition, an inlay is an intracoronal restoration made outside the mouth to correspond to the form of the prepared cavity. It is then cemented or light-cured into the tooth.