PMMA


Also found in: Acronyms.

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.
References in periodicals archive ?
3) 8267n004-sensor acrylic foldable posterior chamber ( uv blocking hydrophobic acrylic multi piece with 60% blue core pmma monofilament heptic assorted power ) us fda premarketing approved.
Similar method was also used to prepare MWCNTs-rGO/PMMA hybrid composite (HC) and PMMA composites with the individual fillers, that is, rGO/PMMA and f-MWCNTs/PMMA composites.
Several studies have found an acceptable marginal accuracy of provisional crowns fabricated with PMMA acrylic resins.6,7 Other studies have revealed better results using Bis-GMA composite resins in terms of appropriate marginal accuracies.8,9 There is also some evidence suggesting light-polymerized materials might have better marginal accuracy.10 Some researchers have demonstrated the preeminence of the indirect technique of making provisional restorations extra orally11,12 while others have advocated the intraoral direct technique.13,14
(3,4) These implants are manufactured specific to the defect and from a myriad of materials of which titanium and PMMA are the most popular.
With sizes of up to 3.7 by 5.4 meters, the sheets made of stretched polymethyl methacrylate (PMMA) are an unprecedented world novelty in the acrylic glass market.
This enables them to verify for themselves the advantages of the large-format PMMA sheets.
The additive has been shown to deliver up to 7H pencil hardness, compared with 3H for virgin PMMA. Resulting compounds boast superior optical properties, with only 5% haze and a drop of only 2% in gloss.
On 0 day, all six animals before and after stabilisation with polypropylene mesh impregnated PMMA plate showed no weight bearing.
The hypotheses tested in this prospective comparative controlled study were as follows: (1) whether Sr-HA is equivalent to PMMA for restoring the fractured thoracolumbar vertebral body, (2) whether leakage of Sr-HA is less than that of PMMA, and (3) whether Sr-HA is completely resorbed and replaced by cancellous bone.
Therefore, it is reasonable to assume PMMA was etched and thus ATH filler particles were uncovered.
To impartially measure slip-resistance properties and understand tribophysical characteristics of vinyl-type flooring surfaces, polymethyl methacrylate (PMMA or acrylic) sheets were deliberated for dynamic friction measurements.