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Topic: Biocompatibility

	Biocompatibility
		The term biocompatibility refers to the ability of a material to be in contact with living tissue and not cause toxic or injurious effects.
		Standards for the biocompatibility of dental alloys are still to be determined.
		The goal of all biocompatibility testing is to simulate conditions that would exist in the oral environment.
	www.argen.com /english/qualitystds/biocompatibility.html (0 words)

	Biocompatibility - Biocrawler (Site not responding. Last check: )
		Biocompatibility is the ability of a material to perform with an appropriate host response in a specific application.
		Sometimes one hears of biocompatibility testing that is comprised of a large battery of in vitro test that is used in accordance with ISO 10993 to determine if a certain material (or rather biomedical product) is biocompatible.
		These test do not determine the biocompatibility of a material, but they comprise an important step towards the animal testing and finally clinical trials that will determine the biocompatility of the material in a given application, and thus biomedical product.
	www.biocrawler.com /encyclopedia/Biocompatibility (558 words)

	Biocompatibility Testing (Site not responding. Last check: )
		Biocompatibility may generally be regarded as the ability of a material to interact with living cells/tissues or a living system by not being toxic, injurious, or causing immunological reactions while performing or functioning appropriately.
		The determination of the biocompatibility of materials and implant devices involves detailed characterization of the material (e.g., bulk and surface chemical composition; density; porosity; and mechanical, electrical, and degradation properties) and extensive testing, first at the protein/cell/tissue or in-vitro level, and then in in-vivo animal models and ultimately in human clinical trials.
		The use and documentation of biocompatibility tests are required by law in the United States and other countries, and are used to ensure that biomedical devices and their constituent materials are safe and effective under intended use conditions.(2and3) This article provides a general introduction to the types of biocompatibility tests.
	www.dekker.com /sdek/217642412-95051722/abstract~content=a713553985~db=enc (663 words)

	biocompatibility of titanium dental implants (Site not responding. Last check: )
		of osseointegration and the biocompatibility of titanium implants, the procedures involved in the...
		Biocompatibility of titanium and titanium alloys Unalloyed and alloyed titanium have been used in medical...
		that is investigated is that the biocompatibility of titanium involves an interaction between the...
	www.a1physicians.com /30/biocompatibility-of-titanium-dental-implants.html (170 words)

	Biodegradation and In Vivo Biocompatibility of Rosin: a Natural Film-Forming Pol (Site not responding. Last check: )
		The specific aim of the present study was to investigate the biodegradation and biocompatibility characteristics of rosin, a natural film-forming polymer.
		Initial biocompatibility was followed on postoperative days 7, 14, 21, and 28 by histological observations of the surrounding tissues around the implanted films.
		Good biocompatibility comparable to PLGA is demonstrated by the absence of necrosis or abscess formation in the surrounding tissues.
	www.pharmainfo.net /pharmaceutical_company/coating/biodegradation_and_in_vivo_biocompatibility_of_rosin:_a_natural_film-forming_pol (296 words)

	Biocompatibility of NiTi
		The authors concluded that the biocompatibility of the nickel-titanium alloy stapes prosthesis with the long crus of the incus was hereby proven.
		The biocompatibility results of the NiTi screws compared with the other screws showed a slower osteogenesis process characterized by no close contacts between the implant and bone, disorganized migration of osteoblasts around the implant, and a lower activity of osteonectin synthesis.
		The authors conclude that, despite the excellent biocompatibility of the material with no evidence of foreign body reactions or corrosion, there were no complete incorporations of the stent by epithelialization.
	herkules.oulu.fi /isbn9514252217/html/x753.html (0 words)

	[No title]
		The spray mechanism is also silicone tubing but there may be biocompatibility issues because the tip is exposed to the air.
		The nose piece is made of latex so could possible pose some biocompatibility issues because of that along with the fact that it is the only component that directly contacts the patient.
		Biocompatibility issues and testing: Contamination of spray tip exposure to air could cause contamination which could transfer inside the device and contaminate the medication inside, which would cause contaminated tear fluid to be inputted into the eye.
	www.pitt.edu /~gartnerm/05/TearSpray/biocompatibility.doc (440 words)

	Biocompatibility Testing for Dental Materials
		The first is that over 200 million people have one or more kinds of dental materials in their mouths; meaning the biocompatibility of dental materials is important to a large number of people.
		The simplest definition of biocompatibility is the ability of a substance to exist within, or alongside, living things without harming them.
		The biocompatibility of a dental material refers to the ability of the material to provide the desired function without causing any undesirable local or systemic effects in the body.
	www.dentalwellness4u.com /oralhealth/biocompat.html (493 words)

	PrefaceAcknowledgments
		Classical biocompatibility [234-243, 260, 6030-6048] has often focused on the immunological and thrombogenic reactions of the body to foreign substances placed within it.
		In most cases, the biocompatibility of nanomedical devices may be regarded as a problem of equivalent difficulty to finding biocompatible surfaces for implants and prostheses that will only be present in vivo for a relatively short time.
		However, during the course of this research it became clear that biocompatibility is a central issue in determining the feasibility, limitations, and technical requirements of medical nanorobotics.
	www.nanomedicine.com /NMIIA/PrefaceAcknowledgments.htm (0 words)

	JCRS: Vol. 27, No. 12, December 2001
		Biocompatibility has also been defined as "the capability of a prosthesis implanted in the body to exist in harmony with tissue without causing deleterious changes."[1]
		It is this foreign-body reaction on the IOL surface that has classically been thought of as a marker of the biocompatibility of an IOL; in fact, it is probably the most important factor in the evaluation of uveal biocompatibility.
		In fact, a particular IOL may have excellent uveal biocompatibility, characterized by minimal foreign-body giant cells on the surface of the lens and low postoperative aqueous flare measurements, yet have poor capsular biocompatibility, characterized by lens epithelial overgrowth or capsule contraction.
	www.ascrs.org /publications/jcrs/editjan02.html (0 words)

	Biocompatibility
		The biocompatibility of an artificial material in the body is extremely complicated, involving processes traditionally belonging to medical science, surface science, materials science, and molecular biotechnology.
		The interaction between an implant surface and the cells is thus mediated through this biolayer.
		Extensive medical/clinical implant expertise is combined with expertise in new and emerging fields of nanotechnology/surface science and biotechnology/molecular biology.
	www.inano.dk /sw2495.asp (401 words)

	biocompatibility plasma grafting
		To increase biocompatibility in vivo, the issue of...
		By grafting a specific biocompatible polymer on the AN69 membrane, a selective and partial...
		Machining through plastic and an earthquake ; Improving the biocompatibility of medical implants with plasma immersion ion...
	www.einehandvollgras.de /biocompatibility-plasma-grafting-49.htm (201 words)

	Materials - Physical Characteristics - Wear, Corrosion, Biocompatibility
		Biocompatibility refers to the way materials interact with your body.
		Some materials, lead and mercury for example, are naturally harmful when taken into the body, so are not suitable for implanting.
		Because some few people may have an allergic reaction, even to materials that are generally safe for the general public, it is important to tell your doctor about any allergies you may have.
	www.zimmer.com /z/ctl/op/global/action/1/id/9479/template/PC/navid/4222 (387 words)

	Biocompatibility / testing (Site not responding. Last check: )
		Biocompatible materials are clearly those compatible with the biological system they are put in contact with.
		Biocompatibility is the ability of a material to perform with an appropiate host response in a specific application
		This emphasizes that there is no absolute "biocompatibility" and that some reponses by the body to the implant may be OK (`appropriate').
	www.mse.cornell.edu /courses/engri119/Class_Notes/biocompatibility___testing.htm (853 words)

	Reference.com/Encyclopedia/Biocompatibility
		Indeed, since the hemostasis of the immune response and repair functions in the body are so complicated it would seem odd that one can make one test to determine the biocompatibility of any given material.
		In short: there is no such thing as a universally biocompatible material but there are degrees of biocompatibility.
		The scope of the first definition is so wide that D Williams tried to find suitable subgroups of applications in order to be able to make more narrow definitions.
	www.reference.com /browse/wiki/Biocompatibility (577 words)

	Biomaterials, biomimesis and biocompatibility (Site not responding. Last check: )
		Although the population of the United Kingdom was expected to fall by about 2m over the next 50 years, the proportion of people aged over 60 years was predicted to increase by half over the same period.
		One natural compound involved in biocompatibility was glycine betaine, a zwitterion.
		As well as giving the drain better biocompatibility, his work had developed a new, elliptical shape and a more precise, laser-drilled hole, only 30 microns in diameter, for the drain.
	www.pharmj.com /Editorial/20001028/society/science_lecture_663.html (488 words)

	Biocompatibility To Widen Scope Of Biomaterial Applications
		Researchers across the world are working toward biocompatibility by optimizing interactions that occur between implanted biomaterials and the host living tissue.
		Biocompatibility assumes greater significance as surgeons are increasingly focusing on treatment of chronic diseases.
		For instance, spinal surgeons are turning their attention to technologies that can treat chronic back pain rather than focusing on achieving spinal stability, as fusion technology such as cages, bone grafts, and fixation devices attain maturity in terms of providing positive clinical benefits.
	www.spacedaily.com /news/materials-04zi.html (444 words)

	(ISO 10993) Biocompatibility Safety Assessment of Medical Devices: FDA/ISO and Japanese Guidelines (MDDI archive, Jan ...
		Submissions for approval of medical devices by regulatory agencies require that biocompatibility assessment be conducted to assure safety of the device or material.
		Prior to 1995, biocompatibility testing was usually conducted by the use of the #G87-1 Tripartite Biocompatibility Guidance (1987).
		Tests in areas of biocompatibility not covered by this article would be based upon current guidelines, such as the OECD guidelines for testing of chemicals and others.
	www.devicelink.com /mddi/archive/00/01/017.html (0 words)

	We offer services in the area of biocompatibility testing to ensure safety and compliance with FDA requirements. (Site not responding. Last check: )
		Gad Consulting Services is a nine year old toxicology and regulatory consulting firm which offers services in biocompatibility testing for all aspects of drug development.
		Each and every project is considered and tended to individually and independently, but with the benefit of more than 25 years experience in the field and regular ongoing interactions with FDA.
		We are a small organization priding ourselves on offering timely, quality, and cost effective services in the area of biocompatibility testing to ensure safety and compliance with FDA requirements.
	www.gadconsulting.com /biocompatibility.html (117 words)

	Regulatory Guidelines for Biocompatibility Safety Testing (MPB archive, May 97)
		Since adverse health effects could result from exposure to the materials from which a device is made, preclinical assessment of the toxic potential of such materials or components is needed to minimize the potential hazard to the patient.
		Tests that may be used in an evaluation of medical device biocompatibility include procedures for cytotoxicity, skin sensitization, dermal irritation and intracutaneous reactivity, acute systemic toxicity, subchronic toxicity, mutagenicity, implantation, hemocompatibility, chronic toxicity, and carcinogenicity.
		The biocompatibility of a device depends on several factors, especially the type of patient tissue that will be exposed to device materials and the duration of the exposure.
	www.devicelink.com /mpb/archive/97/05/001.html (0 words)

	Design, Develop, Manufacture, Commercialize MEMS - Biocompatibility
		Since biocompatibility is determined by the final device configuration, different configurations can be pursued based on the intended exposure time of the medical device (for example, acute use versus chronic use) and ISSYS has investigated several pathways to biocompatibility.
		The biocompatibility of ISSYS' devices is based on a solid foundation of academic research.
		Studies have demonstrated biocompatibility for up to one year in animal implantation and show great potential for long-term biocompatibility for ISSYS core technology.
	www.mems-issys.com /html/biocompatibility.html (0 words)

	Biocompatibility of polypropylene mesh
		Therefore, the present study evaluates the biocompatibility of the polypropylene mesh, when implanted in the subcutaneous tissue of the rat.
		The results shown in Table 1 and Figures 1 -2 -3 indicate its biocompatibility and thus its use in normal tissues.
		Further studies should be carried out to evaluate the anatomical usefulness of this biocompatible mesh to substitute skeleton and loss of substance in maxillofacial surgery.
	www.forp.usp.br /bdj/bdj12(2)/trab10122/trab10122.html (0 words)

	Biocompatibility Testing
		Comparative Biosciences, Inc. offers a wide range of biocompatibility testing for various biomaterials including implantation, local irritation, pyrogenicity, sensitization, and multi-dose toxicity testing to meet FDA, ISO, and JMHW standards.
		Biocompatibility testing is used to establish biocompatibility and safety of these materials in a preclinical setting.
		Implantation tests are useful for the assessment biomaterials that are exposed to the body for an extended duration.
	www.compbio.com /biocompatibility-testing.html (0 words)

	Amazon.com: Biocompatibility
		Biocompatibility of Dental Materials: Biocompatibility of Preventive Dental Materials and Bonding Agents by D. Smith and D. Williams (Hardcover - Jun 1982)
		Biocompatibility: Interactions of Biological and Implantable Materials (Volume 1: Polymers) by Frederick Silver and Charles Doillon (Hardcover - Jun 1989)
		Biocompatibility of Prosthodontic Materials (Biocompatibility of dental materials) by D. Smith and William F. Williams (Hardcover - Jul 1982)
	www.amazon.com /s?ie=UTF8&keywords=Biocompatibility&index=blended&page=1 (0 words)

	III. Biocompatibility Of Dental Restorative Materials
		A balanced discussion of the biocompatibility of dental amalgam requires consideration of the relative biocompatibility of other restorative materials that potentially could serve as alternatives to amalgam.
		Most of these materials are subject to the same biocompatibility standards as the posterior restorative materials discussed above; however, the scope of the discussion in this report is limited to materials used in the long-term replacement of missing tooth structure.
		All materials in current use are considered acceptable, in terms of their biocompatibility with local tissues, when properly handled and placed.
	www.health.gov /environment/amalgam1/appendixI-sectionIII.htm (0 words)

	Zirconia - In Vitro Biocompatibility of Zirconia Ceramics
		The biocompatibility, or reaction of some zirconia ceramics, in particular 3mol% yttria stabilised tetragonal zirconia polycrystal (3Y-TZP) to physiological environments or simulated physiological environments have been documented in the literature.
		In an investigation into the behaviour of mouse fibroblasts on various dense ceramics, it was found that the adhesive strength and growth rate of cells on zirconia was comparable with those on other materials accepted as being biocompatible, including hydroxyapatite, tricalcium phosphate, and tissue culture plastic.
		The type of zirconia ceramic involved with this study, although not specified, was produced by a Japanese and was likely to be yttria stabilised tetragonal zirconia polycrystal.
	www.azom.com /Details.asp?ArticleID=1961 (610 words)

	Test method provides biocompatibility 'barometer'
		Described in a Dec. 11 presentation at the Tissue Engineering Society International's conference in Orlando, Fla., the technique should provide a more sensitive and reliable means to evaluate the biocompatibility of new materials for a wide range of applications from contact lenses to dental coatings to bone implants.
		Whereas current means to test biocompatibility produce a yes/no result that a material is minimally biocompatible or not, the new analysis can tell which materials are more biocompatible than others.
		Industry and researchers should be able to use this method to produce new materials for dentistry and other medical applications that are even more well matched to the human body.
	www.eurekalert.org /pub_releases/2003-12/nios-tmp121903.php (298 words)

	HDCN: Review of article by Pereira et al. Impact of single use versus reuse of cellulose dialyzers on clinical ...
		To make a long story short, there were no differences found in any plasma measure of biocompatibility studied, predialysis, postdialysis, or 15 minutes into dialysis.
		The conclusions of the study were, that reuse of cuprammonium dialyzers with glutaraldehyde and bleach does not alter their biocompatibility, and does not induce an altered state of cytokines in patients.
		It throws considerable cold water on those prophets of doom (e.g., Dr. Stanley Shaldon) who claim that reuse of dialyzers is a dangerous practice that should be abandoned.
	www.hdcn.com /6/606japer.htm (261 words)

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