Impact Strength of Poly Methyl Methacrylate Denture Base Resin of Different Thicknesses Reinforced with Glass Fibre- An Invitro Study
نویسنده
چکیده
th dentistry. Early 20 century sawintroduction of various newer materials like stainless steel, cobalt chromium alloys, acrylic resins(heat cure and self-cure) as DB materials.However, acrylic resin seems to be a material, which got more attention because it fulfils many of the desired properties like ease of processing, favourable working characteristics, accurate fit, stability in oral environment, superior aesthetics, use with inexpensive equipments and adequate mechanical properties. The first plastic type acrylic resin i.e. poly (methyl methacrylate) was available under the name of “veronite”. Rohm and Hass in 1936 introduced poly (methyl methacrylate) in the
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Denture base polymers, poly methyl methacrylate improved using free radical copolymerization
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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OBJECTIVES To investigate the effect of the addition of glass flakes on physical properties of conventional heat cure denture base resins and to compare it with a high impact strength denture base resin. MATERIALS AND METHODS Test specimens were divided into Group 1 - poly (methyl methacrylate) (PMMA) (Trevalon), Group 2 - Trevalon HI, Group 3 -5% glass flake +95% PMMA (Trevalon), Group 4 -10...
متن کاملThe effect of fiber reinforcement on the dimensional changes of poly methyl methacrylate resin after processing and after immersion in water: an in vitro study.
AIMS AND OBJECTIVES To evaluate and compare the effect of fiber reinforcement on the dimensional changes of heat-cured poly (methyl methacrylate) resin after processing and immersion in water. MATERIALS AND METHODS Three different heat-cure resins were selected for the present study: (1) Nonreinforced heat-cure methyl methacrylate resin, (2) High Impact heat-cured methyl methacrylate resin an...
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INTRODUCTION As civilization has progressed, there has been continued refinement of materials available for dental practice. The applications of resins have been extended to increased practical uses in numerous areas of prosthetic and restorative dentistry. Certain significant alterations in the technique of manipulation and nature of the dental product have influenced the range of application ...
متن کاملEffect of Reinforcement Using Stainless Steel Mesh, Glass Fibers, and Polyethylene on the Impact Strength of Heat Cure Denture Base Resin - An In Vitro Study
BACKGROUND The impact strength of denture base resin is of great concern and many approaches have been made to strengthen acrylic resin dentures. The objective of this study was to compare the impact strength of the denture base resin with and without reinforcement and to evaluate the impact strength of denture base resin when reinforced with stainless steel mesh, glass fiber, and polyethylene ...
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