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Biocompatible Materials definition: Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.
biomaterial definition: synthetic or industrial materials intended for use in contact with human tissues.
Biomedical Material definition: Any substance other than pharmacologic substance that can be applied in biomedical research or in constructing artificial organs, devices, or prostheses that can be introduced into the human body.
biomaterial evaluation definition: evaluation of synthetic or industrial materials intended for use in contact with human tissues.
Biomedical and Dental Materials definition: Substances used in biomedicine or dentistry predominantly for their physical, as opposed to chemical, properties.
Contrast Media definition: Substances used to allow enhanced visualization of tissues.
contrast media definition: substances used in radiography that allow visualization of certain tissues.
Contrast Agent definition: Substances administered during diagnostic procedures that allows delineation of internal structures. Contrast agents appear opaque due to the difference in absorption of X-rays or other electromagnetic waves and surrounding tissue.
Dental Casting Investment definition: Material from which the casting mold is made in the fabrication of gold or cobalt-chromium castings. (Boucher's Clinical Dental Terminology, 4th ed, p168)
Dental Impression Materials definition: Substances used to create an impression, or negative reproduction, of the teeth and dental arches. These materials include dental plasters and cements, metallic oxide pastes, silicone base materials, or elastomeric materials.
dental impression material definition: substances used to create an impression, or negative reproduction, of the teeth and dental arches; these materials include dental plasters and cements, metallic oxide pastes, silicone base materials, or elastomeric materials.
MATERIAL, IMPRESSION definition: Impression material is a device composed of materials such as alginate or polysulfide intended to be placed on a preformed impression tray and used to reproduce the structure of a patient's teeth and gums. The device is intended to provide models for study and for production of restorative prosthetic devices, such as gold inlays and dentures.
Dental Impression Materials definition: Devices intended to be used to reproduce the structure of a patient's teeth and gums. These devices provide models for study and for production of restorative prosthetic devices.
Dental Materials definition: Materials used in the production of dental bases, restorations, impressions, prostheses, etc.
dental material definition: broad term to cover material used in temporary or permanent dental implants, biomaterials, prosthetic devices, etc; index narrower term when possible.
Hazardous Substances definition: Substances which, upon release into the atmosphere, water, or soil, or which, in direct contact with the skin, eyes, or mucous membranes, or as additives to food, cause health risks to humans or animals through absorption, inhalation, or ingestion. The concept includes safe handling, transportation, and storage of these substances.
hazardous substance definition: substances which, upon release into the atmosphere, water, or soil, or which, in direct contact with the skin, eyes, or mucous membranes, or as a food additive, cause health risks to humans or animals through absorption, inhalation, or ingestion.
Manufactured Materials definition: Substances and materials manufactured for use in various technologies and industries and for domestic use.
manufactured material definition: Corresponds to the ManufacturedMaterial class
Materials Testing definition: The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
Teaching Materials definition: Instructional materials used in teaching.
Composite Restorative Materials, Dental definition: Composite restorative materials consisting of a blend of glass or ceramic particles dispersed in a synthetic organic resin matrix for use in dental restorations such as filling dental cavities. Composites typically consist of a dimethacrylate resin, either a mixture of bisphenol A and glycidyl methacrylate (BisGMA) or urethane dimethacrylate (UDMA); the filler is usually made of glass, quartz, ceramic, or silica combined with 5% to 10% weight of very small (0.04 micrometer) particles of colloidal silica; the mixture is frequently thinned with triethylene glycol dimethacrylate (TEGDMA) to lower viscosity. Composites should match the color of the visible surfaces of the original teeth for esthetic reasons. Composite materials are available in a self-curing two-paste systems or, more frequently, in a single-paste system that is polymerized in situ using either light (i.e., photopolymerization) or heat. These materials are used to restore teeth with dental caries or damaged dental tissue; they are usually classified as "all-purpose" (or universal), anterior, or posterior according to the intended use. Composite restorative materials are frequently available in kits that include mixing, applying (e.g., syringes), and polishing devices and/or supplies.
Bone Substitutes definition: Synthetic or natural materials for the replacement of bones or bone tissue. They include hard tissue replacement polymers, natural coral, hydroxyapatite, beta-tricalcium phosphate, and various other biomaterials. The bone substitutes as inert materials can be incorporated into surrounding tissue or gradually replaced by original tissue.
Library Materials definition: Print and non-print materials collected, processed, and stored by libraries. They comprise books, periodicals, pamphlets, reports, microforms, maps, manuscripts, motion pictures, and all other forms of audiovisual records. (Harrod, The Librarians' Glossary, 4th ed, p497)
ALCOHOL CONTROL MATERIALS definition: A clinical toxicology control material is a device intended to provide an estimation of the precision of a device test system and to detect and monitor systematic deviations from accuracy resulting from reagent or instrument defects. This generic type of device includes various single, and multi-analyte control materials.
material definition: general term for structural metal, plastic, fabric, and other components of devices, equipment, buildings, apparel, etc.
Material definition: The tangible substance that goes into the makeup of a physical object.
material definition: Any thing that has extension in space and mass, may be of living or non-living origin.
Coated Materials, Biocompatible definition: Biocompatible materials usually used in dental and bone implants that enhance biologic fixation, thereby increasing the bond strength between the coated material and bone, and minimize possible biological effects that may result from the implant itself.
Biomimetic Materials definition: Materials fabricated by BIOMIMETICS techniques, i.e., based on natural processes found in biological systems.
Nanomaterial definition: A bulk material composed of discrete nano-substructures that are engineered, synthesized and characterized for a myriad of applications.
Nanostructures definition: Materials which have structured components with at least one dimension in the range of 1 to 100 nanometers. These include NANOCOMPOSITES; NANOPARTICLES; NANOTUBES; and NANOWIRES.
Audiovisual Material definition: Materials using sight or sound to present information.
Nanocrystalline Materials definition: Any crystalline structure possessing dimensions measured in terms of nanometers.
Cancer Educational Materials definition: Materials intended to educate the lay public in all aspects of cancer information
Antistatic Materials definition: Substances that do not retain an electrostatic charge.