Applications Of Ceramics In Medicine

Applications of ceramicsziad zohdy 2.

Applications of ceramics in medicine. A ceramic material is an inorganic non metallic often crystalline oxide nitride or carbide material. As a result they are often used as coatings relying on the mechanical strength and toughness of the substrate. Ceramic materials can be identified by their general properties like high hardness brittleness chemical stability and low thermal conductivity. The apatite and related calcium phosphates have been of remarkable interest to biologists mineralogists inorganic and industrial chemists for many years.

White to ivory colour gives a clear advantage for oxide ceramics versus metals which is the reason why research and development are nowadays directed towards metal free dental prosthetic restorations. Ceramic materials have been produced for custom practices for centuries but they are a rather modern development in medical processes and applications used in surgical implants prosthetics and various medical tools and devices medical ceramics change lives. A ceramic material may be defined as any inorganic crystalline material compounded of a metal and a non metal ceramics can be classified as crystalline ceramics non crystallineceramics crystalline ceramic materials are not amenable to a great range ofprocessing. Manufacturers fabricate numerous ceramic medical appliances from the oxides alumina and zirconia.

Such synthetic bone substitute or scaffold materials are typically porous which provides an increased surface. The medical sector benefits from many properties of ceramics such as inertness non toxicity hardness high compressive strength low friction coefficient wear and chemical resistance sterile nature ability to be manufactured with various degrees of porosity very good aesthetics and durability. Calcium phosphate based ceramics constitute at present the preferred bone substitute material in orthopaedic and maxillofacial applications as they are similar to the main mineral phase of bone in structure and chemical composition. Bioactive ceramics are relatively weak compared with common implant metals and high strength ceramics such as alumina and zirconia.

Some elements such as carbon or silicon may be considered ceramics ceramic materials are brittle hard strong in compression and weak in shearing and tension. An important bioactive ceramic is hydroxyapatite ha. Dental applications add aesthetic requirements colour translucency to the mechanical specifications. These material properties are utilized to produce number of commercial and domestic products such as pottery bricks advanced functional items etc.

Ceramics are an incredibly diverse family of materials whose members span traditional ceramics such as pottery and refractories to the modern day engineering ceramics such as alumina and silicon nitride found in electronic devices aerospace components and cutting tools. They withstand chemical erosion that occurs in other materials subjected to acidic or caustic environments. Applications of ceramics 1. Advanced ceramics and traditional ceramics are the main categories of ceramic materials.