polymethyl methacrylate


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polymethylmethacrylate

, polymethyl methacrylate (pol′ē-meth′ĭl-meth″ak′rĭ-lāt″) [ poly- + methyl + methacryl(ic acid) + -ate],

PMMA

C5H8O2, a transparent, colorless acrylic polymer. It is used in optics and ophthalmology to make intraocular lenses for cataract surgery, in dentistry as a denture base material, in cosmetic surgery as a soft-tissue filler, and in the fabrication of dialysis membranes with high biocompatibility.

polymethyl methacrylate (PMMA)

Polymerized methyl methacrylate forming a light transparent thermoplastic material used in the manufacture of some spectacle lenses and formerly hard contact lenses. See modulus of elasticity; plastic spectacle frame.
References in periodicals archive ?
Types of intraocular lens implanted and posterior capsular opacification status [n (%)] IOL type Number PCO implanted status Hydrophobic acrylic 15 (50%) 6 (40%) (AcrySof, Alcon) Polymethyl methacrylate 5 (16.66%) 5 (100%) (BAL, Hanita) Acrylic (Sensar, AMO) 5 (16.66%) 5 (100%) Hydrophilic-coated hydrophobic 5 (16.66%) 5 (100%) (Acriva, VSY) IOL: Intraocular lens, PCO: Posterior capsular opacification Table 3.
Comparative effects of denture cleansers on physical properties of polyamide and polymethyl methacrylate base polymers.
LIMITATION: Hydrophobic acrylic, silicone IOLs are not compared with polymethyl methacrylate IOLs.
One of the plants will produce up to 250,000 tonnes a year of methyl methacrylate monomer (MMA), while the other will produce up to 40,000 tonnes of polymethyl methacrylate (PMMA).
(11) Over the years, the use of polymethyl methacrylate cement for implant fixation was abandoned, whereas advancements in technology led to improved metallic implant surfaces that could induce bone ongrowth and reduce aseptic loosening.
Once the hawk was stabilized, treatment included surgical amputation of the right second digit at the tarsometatarsal-phalangeal joint, during which 8 gentamicin-impregnated polymethyl methacrylate beads (1 g in 20 g polymethyl methacrylate beads; APP Pharmaceuticals, LLC, Schaumberg, IL, USA) were placed at the site for local antibiotic therapy.
The approach of Edith Mathiowitz, professor of medical science, and her colleagues at Brown University involves coating nonadhesive nanoparticles (polymethyl methacrylate, PMMA) with a highly bioadhesive polymer, poly(butadiene-maleic anhydride-co-L-DOPA) (PBMAD).
Here, under the guidance of Dr Ajit Kumar Varma, Diabetic lower limb and foot & ankle reconstructive surgeon, the doctors planned to replace the destroyed foot and ankle bones of his right foot with 'Polymethyl methacrylate' (PMMA).
Actually, the prime use of acetone is to produce polymethyl methacrylate, better known as Plexiglas.
Bristol, Pa.-based Altuglas International, a subsidiary of Arkema Group, has introduced the Altuglas Luctor polymethyl methacrylate (PMMA) alloy, purported to flow twice far as conventional transparent medical polymers in thin wall injection mold cavities.