نتایج جستجو برای: methacrylate

تعداد نتایج: 10712  

Journal: :Journal of biomaterials science. Polymer edition 2005
Jovita R Tauro Richard A Gemeinhart

The objective of this study was to synthesize and characterize particles as a drug-delivery platform for gliomas, a highly advanced and invasive stage of brain tumor with poor prognosis. Poly(aminoethyl methacrylate-co-methyl methacrylate) particles were prepared by suspension polymerization and poly(aminoethyl methacrylate-co-poly(ethylene glycol) methacrylate) particles were prepared by emuls...

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Journal: Iranian Chemical Communication 2015
Abdoulhossien Massoudi, Azam Louie, Omid Louie,

Poly methyl methacrylate (PMMA) is the most common material used in Prosthodontics. Several studies indicate a breakdown of the number of very high resin bases after 2 to 3 years to avoid breaking bass and several attempts have been made, such as altering the chemical structure of resin by adding causes cross linking or copolymerization. The innovative method for improving the physical properti...

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Journal: :razavi international journal of medicine 0
mohammad gharehdaghi orthopedic research center, imam reza hospital, school of medicine, mashhad university of medical sciences, mashhad, ir iran mohammad hossein ebrahimzadeh orthopedic research center, ghaem hospital, school of medicine, mashhad university of medical sciences, mashhad, ir iran nahid mojaver orthopedic research center, shahid kamyab hospital, school of medicine, mashhad university of medical sciences, mashhad, ir iran hami ashraf orthopedic research center, shahid kamyab hospital, school of medicine, mashhad university of medical sciences, mashhad, ir iran; research and education department, razavi hospital, mashhad, ir iran hassan rahimi shoorin orthopedic research center, imam reza hospital, school of medicine, mashhad university of medical sciences, mashhad, ir iran ali birjandinejad orthopedic research center, shahid kamyab hospital, school of medicine, mashhad university of medical sciences, mashhad, ir iran; orthopedic research center, shahid kamyab hospital, school of medicine, mashhad university of medical sciences, mashhad, ir iran. tel: +98-5138523300, fax: +98-5136004360

conclusions with the average 89 months follow-up, no recurrence of the diseases was found in the patients. it seems that using of cement and oral anti-parasitic, after extensive resection of the lesion is a proper treatment of bone hydatid disease. introduction bone is an uncommon site of involvement in hydatid disease; with the prevalence of 0.5-2% among bone lesions. case presentation in this...

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Journal: :علوم و تکنولوژی پلیمر 0
مجتبی عباسیان اصغر فتحی علی اکبر انتظامی مهدی جایمند

a copolymer of styrene and methyl styrene was synthesized by nitroxide - mediated “living” free radical polymerization )nmp). n-bromosuccinimide was used as a brominating agent to obtain a copolymer with bromine as its end group. this brominated copolymer was used as macro initiators for atom transfer  radical  polymerization  (atrp).  chemical  modifcation  of  the  clay  and transformation of...

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2016
Yin Ning Lee A. Fielding Kay E. B. Doncom Nicholas J. W. Penfold Alexander N. Kulak Hideki Matsuoka Steven P. Armes

New spherical diblock copolymer nanoparticles were synthesized via RAFT aqueous dispersion polymerization of 2-hydroxypropyl methacrylate (HPMA) at 70 °C and 20% w/w solids using either poly(carboxybetaine methacrylate) or poly(proline methacrylate) as the steric stabilizer block. Both of these stabilizers contain carboxylic acid groups, but poly(proline methacrylate) is anionic above pH 9.2, w...

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2010
L. E. Nita A. P. Chiriac

The paper evidences changes of thermal properties of poly(methyl methacrylate) as well as methyl methacrylate copolymers with glycidyl methacrylate (GMA) polymers synthesized classic and comparatively in a magnetic field. Samples of poly(methyl methacrylate) and methyl methacrylate copolymers with different amounts of GMA synthesized by radical emulsion polymerization with or without the presen...

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Journal: :iranian chemical communication 2015
abdoulhossien massoudi azam louie omid louie

poly methyl methacrylate (pmma) is the most common material used in prosthodontics. several studies indicate a breakdown of the number of very high resin bases after 2 to 3 years to avoid breaking bass and several attempts have been made, such as altering the chemical structure of resin by adding causes cross linking or copolymerization. the innovative method for improving the physical properti...

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Journal: :journal of dentistry, tehran university of medical sciences 0
sedighe sadat hashemi kamangar assisstant professor, dental research center dentistry research institute, department of operative dentistry, faculty of dentistry, tehran university of medical sciences, international campus, tehran, iran. kiana kiakojoori dental student, tehran university of medical sciences, international campus, tehran, iran. mansoore mirzaii assistant professor, department of operative dentistry, faculty of dentistry, tehran university of medical sciences, tehran, iran. mohammad javad kharazi fard department of epidemiology and biostatistics, faculty of public health, tehran university of medical sciences, tehran, iran.

the aim of this study was to determine the effects of 40% hydrogen peroxide and 15% carbamide peroxide on microhardness and color change of a silorane-based composite resin in comparison with two methacrylate-based composites.fifty-four disc-shaped specimens (a3 shade) were fabricated of filtek p90 (p90), filtek z350xt enamel (z350) and filtek z250 (z250) (3mespe) (n=18). the samples of each co...

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2009
A.Varada Rajulu

The newly identified natural fabric from the tree of Sterculia urens was coated with Polymethyl methacrylate. The tensile properties of both the uncoated and Polymethyl methacrylate coated fabrics were studied. The tensile parameters such as maximum stress, Young’s modulus and % elongation at break were determined using a Universal Testing Machine. The effect of alkali treatment and the Polymet...

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Journal: :avicenna journal of dental research 0
mohammad hossain lotfikamran department of prosthodontics, school of dentistry, shahid sadoughi university of medical sciences, yazd, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید صدوقی یزد (shahid sadooghi university of medical sciences) sara gholamhosseini school of dentistry, shahid sadoughi university of medical sciences, yazd, ir iran; dental student, school of dentistry, shahid sadoughi university of medical sciences, yazd, ir iran. tel: +98-3536255881, fax: +98-3516250344سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید صدوقی یزد (shahid sadooghi university of medical sciences) abbas fallah tafti department of prosthodontics, school of dentistry, shahid sadoughi university of medical sciences, tehran, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید صدوقی یزد (shahid sadooghi university of medical sciences)

conclusions the study results demonstrated that undergraduate prosthodontics students in their last two years of study had an average knowledge of working with methyl methacrylate. therefore, health education should focus more on working with dentistry substances, in order to enhance the knowledge level of the targeted students. results the mean level of individuals’ knowledge in regard to work...

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