Implantation Matrix Dosage Form

**Semantic type:** Biomedical or Dental Material

**Definition:** Solid sterile preparation consisting of a usually pliable, absorbent piece of material (e.g. collagen), usually impregnated with a liquid preparation, intended for implantation in the body. The material may be cut into smaller pieces before implantation, and may be shaped around a tissue (e.g. a bone) or inserted into a medical device that is then implanted. Implantation matrices are intended for release over an extended period of time, usually in order to obtain a local effect. Usually the matrix disappears with time.

**Synonyms:** - Implantation matrix