silicone

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silicone

 [sil´ĭ-kōn]
any of a large group of organic compounds comprising alternating silicon and oxygen atoms linked to organic radicals; uses have included wetting agents and surfactants, sealants, coolants, contact lenses, and surgical membranes and implants.
silicone oil any of various fluid silicone polymers; some are injected into the vitreous of the eye to serve as a vitreous substitute during or after certain ophthalmologic surgical procedures, such as to prevent the reoccurrence of retinal detachment.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

sil·i·cone

(sil'i-kōn),
A polymer of organic silicon oxides, which may be a liquid, gel, or solid, depending on the extent of polymerization; formerly widely used in surgical implants, in intracorporeal tubes to conduct fluids, as dental impression material, as a grease or sealing substance, as a coating on the inside of glass vessels for blood collection, and in various ophthalmologic procedures.
Farlex Partner Medical Dictionary © Farlex 2012

silicone

(sĭl′ĭ-kōn′)
n.
Any of a large group of oligomers and polymers based on the structural unit R2SiO, where R is an organic group, characterized by wide-range thermal stability, high lubricity, extreme water repellence, and physiological inertness and used in adhesives, lubricants, protective coatings, paints, electrical insulation, synthetic rubber, and prosthetic replacements for body parts.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

silicone

A family of inert, synthetic polymers composed of a repeating unit -R2Si-O-, in which -R is a simple alkyl group (a hydrocarbon). Silicones can be produced in various forms (e.g., adhesives, sponges, solid blocks and gels) and are widely used in medicine, given their stability, water repellency and inert nature.

One formerly popular silicone, polydimethylsiloxane, was enclosed in plastic bags of various sizes and shapes for use in plastic surgery to impart cosmetically acceptable contours to soft tissues, most commonly used in women for breast augmentation and in men for chin augmentation. The complications of such implants in trained hands are minimal and are confined to rupture of the bags and/or fibrosis. Subcutaneous, often illicit, injection of silicone for breast enlargement without the enclosing bag (as may be self-administered by transsexual males) may be associated with high fever, diffuse arthritis, renal failure, dry cough, haemoptysis, diffuse bilateral pulmonary infiltrates with patchy, ill-defined airspace consolidation, acute pneumonitis, hypoxemia, alveolitis (alveolar macrophages with silicone inclusions, neutrophils and eosinophils), decreased pulmonary function and granuloma formation.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

silicone

A polymer composed of a repeating unit –R2Si–O– in which –R is a simple alkyl group–a hydrocarbon; silicones are produced in various forms–eg, adhesives, sponges, solid blocks, gels, and widely used in medicine, as they are stable, repel water and inert Medical devices Silicone is used for hydrocephalic shunts, pacemakers, implantable drug-delivery pumps, dialysis and chemotherapy ports, ostomy systems, tracheal and feeding tubes, central venous catheters, myringotomy tubes, cochlear implants, intraocular lenses, intra-aortic balloons, angioplasty devices, cardiac valves, vascular ports, various types of sheeting, and small-joint orthopedic devices 3 forms of silicone are used to fabricate implants: polymer–relatively hard; significant 'bleeding' is rare; elastomer–pliable; some silicone 'bleeding' occurs; gel–'bleeding' is common Plastic surgery Various formulations of silicone have been used in cosmetic surgery; one formerly popular silicone, polydimethylsiloxane, was enclosed in plastic bags of various sizes and shapes and implanted subcutaneously to impart cosmetically acceptable contours to soft tissues, most commonly in ♀ for breast augmentation, and in ♂ for chin augmentation; the complications of such implants in trained hands are minimal and confined to rupture of bags and/or fibrosis. See Breast implants, Human adjuvant disease, Mammoplasty.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

sil·i·cone

(sil'i-kōn)
A polymer of organic silicon oxides, which may be a liquid, gel, or solid, depending on the extent of polymerization; used in surgical implants, in intracorporeal tubes to conduct fluids, as dental impression material, as a grease or sealing substance, as a coating on the inside of glass vessels for blood collection, and in various ophthalmologic procedures.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

silicone

Any polymeric (long-chain), organic compounds of silicon and oxygen in which each silicon atom is linked to an alkyl group. Silicones may be produced as oils, greases or rubbers. Silicone rubber (Silastic) is a valuable prosthetic surgical structural material as it is inert and permeable to oxygen and well tolerated by the tissues.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

sil·i·cone

(sil'i-kōn)
Polymer of organic silicon oxides, which may be a liquid, gel, or solid, depending on extent of polymerization; used in surgical implants, in intracorporeal tubes to conduct fluids, as dental impression material, as a grease or sealing substance, as a coating on inside of glass vessels for blood collection, and in various ophthalmologic procedures.
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about silicone

Q. Do any of you with FM have silicone breast implants, or have you ever had them? How about saline? My silicone implants expired on the surgeon's shelf before they went in my body. Both implants ruptured and disintegrated within 5 years of implantation. I was diagnosed with FM shortly after 2 surgeries to remove silicone goo. Just wondering if anyone else has made the connection. Thank you!

A. As far as I know several studies failed to prove there is a connection between rupture of breast implants and fibromyalgia, as did the FDA conclude. Indeed I heard about one study that found this connection, but it seemed like a very problematic one.

You can read about this subject here (http://en.wikipedia.org/wiki/Breast_implants#Claims_of_systemic_illness_and_disease)

More discussions about silicone
This content is provided by iMedix and is subject to iMedix Terms. The Questions and Answers are not endorsed or recommended and are made available by patients, not doctors.
References in periodicals archive ?
In a nutshell, silicones and TPEs often have very similar properties at room temperature.
Thankfully by October 2018, silicone production plants everywhere started the process of expanding their capacity to chase the tempting 200% to 300% profits, and inadvertently alleviated some tension in the market.
All solid silicone rubber product groups will benefit from these expansion measures.
In April 2018, WACKER brought a new production site for silicone sealants and thermally conductive silicone compounds on stream in Jincheon, South Korea.
Afterwards, in 1977, Wilke obtained data of 92 individuals who had received the injectable-grade silicone injections and noticed that there were inflammatory reactions with granuloma formation in 8 individuals, which developed within a year after the injection.
A number of processes can be used to sterilize uncured silicone. However, these processes have had challenges in the past with sterilization of platinum-catalyzed, addition cure silicones in their uncured state.
With this transaction, CHT Silicones will have a stronger international footprint and will be able to add significantly more value to our customers.
The UV Cationic series has excellent cure response to UV C radiation due to the incorporation of Bluestar Silicones' patented photoinitiator technology.
Applied Silicone has served the medical device and critical healthcare market since 1987.
The types of silicones that fall into the additives category are silanes, silicone surfactants, silicone foam control compositions, and silicone polymers (resins, fluids, and elastomers).
pr@freedoniagroup.com US SILICONE DEMAND (million dollars) % Annual Growth Item 2006 2011 2016 2006- 2011 2011 2016 Silicone Demand 3075 3135 4120 0.4 5.6 Fluids 1228 1335 1700 1.7 5.0 Elastomers 1340 1300 1750 -0.6 6.1 Resins 361 335 460 -1.5 6.5 Gels & Other 146 165 210 2.5 4.9
The system is comprised of KSG-360Z silicone gel emulsifier, KSP-441 hybrid silicone powder and DMF-2 high purity, low residual dimethicone fluid.