نتایج جستجو برای: polymethyl methacrylate

تعداد نتایج: 10768  

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...

Journal: :The Journal of prosthetic dentistry 2014
Russell Wang Junliang Tao Bill Yu Liming Dai

STATEMENT OF PROBLEM Most fractures of dentures occur during function, primarily because of the flexural fatigue of denture resins. PURPOSE The purpose of this study was to evaluate a polymethyl methacrylate denture base material modified with multiwalled carbon nanotubes in terms of fatigue resistance, flexural strength, and resilience. MATERIAL AND METHODS Denture resin specimens were fab...

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...

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...

2017
Pedro C. Cavadas Alessandro Thione Yvan D. Pacheco

Total nasal reconstruction is a challenging multistage procedure. Infections can destroy the cartilage framework and seriously compromise the result. The use of polymethyl methacrylate with antibiotics as a spacer has been described in the treatment of skeletal infections. Using this same principle, the use of a polymethyl methacrylate with antibiotics spacer for an infected nasal reconstructio...

Journal: :The Journal of prosthetic dentistry 2014
Anna Maria Dimiou Konstantinos Michalakis Argirios Pissiotis

STATEMENT OF PROBLEM Increasing the thickness of intraoral autopolymerizing hard denture base liners may result in a temperature rise and a burning sensation for patients. PURPOSE The purpose of the study was to determine whether increasing the thickness of hard autopolymerizing reline resin increases the temperature of the basal seat area of a denture during the polymerization process. MAT...

Journal: :Archives of facial plastic surgery 2006
Michael J Groth Aparna Bhatnagar William J Clearihue Robert A Goldberg Raymond S Douglas

OBJECTIVE To report the long-term efficacy of custom polymethyl methacrylate implants using high-resolution computed tomographic modeling in the reconstruction of complex orbitofacial defects secondary to trauma. METHODS Nine patients with complex orbitofacial bone defects after trauma were evaluated for this retrospective, nonrandomized, noncomparative study. All the patients underwent recon...

Journal: :Journal of the Society of Materials Science, Japan 1967

Journal: :Spine 2004
Susan M Renner Tae-Hong Lim Whoan-Jeang Kim Leonid Katolik Howard S An Gunnar B J Andersson

STUDY DESIGN Axial pullout tests using fresh cadaveric thoracolumbar vertebral bodies. OBJECTIVES To evaluate the effect of a new injectable calcium phosphate cement on the axial pullout strength of both revised and augmented pedicle screws in comparison with polymethyl methacrylate and in terms of injection method. SUMMARY OF BACKGROUND DATA Failure of pedicle screws by loosening and back ...

Journal: :Revista espanola de cirugia ortopedica y traumatologia 2015
J Pino-Mínguez A Jorge-Mora R Couceiro-Otero C García-Santiago

OBJECTIVE The purpose of this study is to compare the biocompatibility and the effect in osteoblasts of polymethyl methacrylate alone, and mixed with hydroxyapatite in different concentrations of 5, 10, 15 and 20%, without exceeding 20%, as it can alter mechanical properties of the composite. MATERIAL AND METHODS Experimental study comparing osteoblast response to Polymethyl methacrylate alon...

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