n. (in dentistry) the supporting component of a dental *bridge or *implant.
n. 1. a drug (such as a subcutaneous hormone implant), a prosthesis (such as an artificial hip, an intraocular lens implant (see cataract), a *breast implant, a *cochlear implant, or an artificial heart implant: see ventricular assist device), or a radioactive source (such as radium needles) that is put into the body. 2. (in dentistry) a rigid structure that is embedded in bone or under its periosteum to provide support for replacement teeth on a *denture, *crown, or *bridge. Recent types (osseointegrated implants) consist of a number of special titanium alloy inserts (fixtures), placed in the jawbone, onto which abutments are fitted after the bone has healed and fused with the fixture. Later an artificial-tooth superstructure is bolted onto the abutments. Osseointegrated implants are also used to retain facial *prostheses. See also osseointegration.... implant