Category: P

A glycoprotein carried in the granules of platelets and released during blood clotting; a potent growth factor for cells of mesenchymal origin, including fibroblasts and smooth muscle cells. Growth factors released by platelets initiate connective tissue healing including bone regeneration and repair. They also increase mitogenesis, angiogenesis, and macrophage activation.  

A concentrate of platelets derived from a patient’s blood and mixed with calcium and thrombin to form a gel which may be used during surgery.  

Colorless nonnuclear disk‐shaped structure, 2–4 μm in diameter, found in the blood of all mammals. It is derived from fragments of megakaryocyte cytoplasm and released from the bone marrow into the blood. Contains active enzymes and mitochondria and has an important role in blood coagulation by adhering to other platelets and to damaged epithelium. Called…

Calcium sulfate hemihydrate reduced to a fine powder; the addition of water produces a porous mass that hardens rapidly. It has been used extensively for pouring dental impressions and subsequent casts. A fine white plaster used to make plaster casts. A preparation of gypsum (calcium sulfate) that sets hard when water is added. It is…

A gypsum material that hardens when mixed with water, used for making impressions and casts. Poultice. A white powder which is mixed with water and used to make a solid support to cover a broken limb. Adhesive tape used in shaped pieces or as a bandage to keep a dressing in place. A material, usually…

A circular DNA molecule that is maintained separately from the cell’s chromosomal DNA and is capable of replicating itself. Plasmids are found mainly in bacteria and also in some eukaryotes, and may encode genes for antibiotic resistance. An autonomously replicating, extra-chromosomal DNA molecule found in many bacteria. Plasmids are widely used as carriers of cloned…

Dental implant with a plasma‐sprayed surface.    

Method of attaching material to the surface of a structure such as an implant body. The coating is produced by heating the sintered coating material in an argon environment at extremely high temperatures (>15 000 °C). The most common plasma spray coatings are titanium and hydroxyapatite plasma sprays.  

Insulinlike growth factor 1 (IGF‐1) is the major growth factor derived from human plasma and found in a variety of tissues and organs including bone matrix.  

Antibody‐producing B lymphocyte that has reached the end of its differentiation pathway. Plasma cells are oval or round with extensive rough endoplasmic reticulum, a well‐developed Golgi apparatus, and a round nucleus. Principal effector cell involved in humoral immunity. Called also plasmocyte or plasma B cell. A type of white blood cell that produces antibodies. Derived…