Heat Polymerized Acrylic Resin
Mostrando 13-24 de 28 artigos, teses e dissertações.
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13. Influence of incorporation of fluoroalkyl methacrylates on roughness and flexural strength of a denture base acrylic resin
Fluorinated denture base acrylic resins can present more stable physical properties when compared with conventional polymers. This study evaluated the incorporation of a fluoroalkyl methacrylate (FMA) mixture in a denture base material and its effect on roughness and flexural strength. A swelling behavior assessment of acrylic resin specimens (n=3, per subst
Journal of Applied Oral Science. Publicado em: 2009-04
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14. Mass loss of four commercially available heat-polymerized acrylic resins after toothbrushing with three different dentifrices
The association between a toothbrush and a dentifrice is the most used denture cleaning method. The purpose of this study was to evaluate the abrasiveness of specific and non-specific denture cleaning dentifrices on different heat-polymerized acrylic resins. Sixteen specimens (90x30x3mm) of each acrylic resin (QC-20, Lucitone 550, Clássico, Vipi-Cril) were
Journal of Applied Oral Science. Publicado em: 2009-04
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15. Impact and fracture resistance of an experimental acrylic polymer with elastomer in different proportions
The purpose of this study was to evaluate the impact and fracture resistance of acrylic resins: a heat-polymerized resin, a high-impact resin and an experimental polymethyl methacrylate with elastomer in different proportions (10, 20, 40 and 60%). 120 specimens were fabricated and submitted to conventional heat-polymerization. For impact test, a Charpy-type
Materials Research. Publicado em: 2009
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16. Effect of a post-polymerization treatments on the flexural strength and Vickers hardness of reline and acrylic denture base resins
This study evaluated the effect of water-bath and microwave post-polymerization treatments on the flexural strength and Vickers hardness of four autopolymerizing reline resins (Duraliner II-D, Kooliner-K, Tokuso Rebase Fast-TR and Ufi Gel Hard C-UGH) and one heat-polymerized acrylic resin (Lucitone 550-L), processed using two polymerization cycles (short cyc
Journal of Applied Oral Science. Publicado em: 2007-12
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17. Flexural strength of acrylic resins polymerized by different cycles
Despite the large number of studies addressing the effect of microwave polymerization on the properties of acrylic resin, this method has received limited clinical acceptance. This study evaluated the influence of microwave polymerization on the flexural strength of a denture base resin. A conventional heat-polymerized (Clássico), a microwave-polymerized (O
Journal of Applied Oral Science. Publicado em: 2007-10
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18. Effect of thermocycling on the tensile and shear bond strengths of three soft liners to a denture base resin
STATEMENT OF PROBLEM: In clinical practice, loss of adhesion between the silicone-based denture liner and the denture base resin is always an undesirable event that might cause loss of material softness, water sorption, bacterial colonization and functional failure of the prosthesis. PURPOSE: This study evaluated the effect of thermocycling on tensile and sh
Journal of Applied Oral Science. Publicado em: 2007-02
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19. Avaliação comparativa da absorção, solubilidade e dureza em reembasadores resilientes submetidos a termociclagem / Comparative evaluation of two permanent denture soft liners in water sorption, solubility and hardness by thermal cycling
The aim of this study was to evaluate the effect of thermocycling on sorption, solubility and Shore A hardness of two resilient definitive lining materials: 1) auto-polymerized silicone base (Sofreliner MS); and 2) heat-polymerized plasticized acrylic resin (Super - soft). To prepare the samples, twenty aluminium matrixes were made (ten for sorption and solu
Publicado em: 2007
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20. Efeito do tipo de revestimento estetico e da eletroerosão sobre a desadaptação de infra-estruturas implanto-suportadas fundidas em titanio c.p / The influence of the veneering application and Spark erosion on the misfit level of implant-supported frameworks
The demand for a passive fit of frameworks for osseointegrated endousseous implants abutments is well known, because the tightening of an inaccurate framework to the abutments can transmit stress to the bone-metal interface. The purpose of the present study was to evaluate the influence of the veneering application and porcelain firing cycle on the misfit le
Publicado em: 2007
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21. Efeito do tipo de revestimento estetico e da eletroerosão sobre a desadaptação de infra-estruturas metalicas implantossuportadas / Influence of vennering material and spark erosion on marginal misfit of implant-suported frameworks
The demand for a passive fit of frameworks for osseointegrated endousseous implants abutments is well known, because the tightening of an inaccurate framework to the abutments can transmit stress to the bone-metal interface. The purpose of the present study was to evaluate the influence of the veneering application and porcelain firing cycle on the misfit le
Publicado em: 2007
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22. Propriedades mecanicas de resinas acrilicas para base de protese antes e apos metodos de reparos / Mechanical properties of denture base acrylic resins before and after repair methods
Fractures by impact and flexural action are the main problems described by denture users and dentists. Attempting to solve this problem, modifications on the chemical composition of the acrylic resins as co-polymer inclusion, cross linking agents addition and rubber particles incorporation in the form of butadiene styrene have been described as effective and
Publicado em: 2006
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23. Efeito da nistatina, fluconazol e do extrato etanolico de propolis de Apis mellifera sobre propriedades de superficie de resina acrilica / Effect of nystatin, fluconazole and ethanolic extract of Apis mellifera propolis on acrylic resin surface
The high prevalence of candidosis in denture wearers, and its association to Candida spp. as principal pathogen is well established. Besides, there are many studies about candidosis etiology, predisposing factors and its treatment using antifungal agents such as Fluconazole (FLU) and Nystatin (NYS). However, little work has been performed to explore the effe
Publicado em: 2005
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24. Efeito da escovação mecanica e da termociclagem sobre dureza e rugosidade superficiais de reembasadores resilientes / Effect of mechanical brushing and ageing by thermal cycling on hardness and roughness surface of resilient soft liners
The aim of this study was to evaluate the effect of mechanical brushing and thermocycling on hardness and roughness of three resilient definitive lining materials: 1) auto (Sofreliner MS), 2) heat-polymerized (Molloplast-B) silicone bases; and 3) auto-polymerized plasticized acrylic resin (Dentuflex). To prepare the samples, silicone rubber matrixes were mad
Publicado em: 2005