Results 131 to 140 of about 137,966 (167)
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Influence of pigments and opacifiers on color stability of silicone maxillofacial elastomer
Journal of Dentistry, 2009To determine the effects of opacifiers and silicone pigments on the color stability of silicone A-2000 maxillofacial prosthetic elastomers subjected to artificial aging.Seventy-five groups (n=5) were made by various combinations (5%, 10%, and 15%) of four dry earth opacifiers (Georgia kaolin, Gk; calcined kaolin, Ck; Artskin white, Aw; titanium white ...
Rade Paravina
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Porosity and Color of Maxillofacial Silicone Elastomer
Journal of Prosthodontics, 2011Prosthesis color production and stability as a result of pore entrapment during mixing has not been investigated for maxillofacial silicone prostheses. The purpose of this study was to investigate pore numbers and percentages of a maxillofacial silicone elastomer mixed by two different techniques, using X-ray microfocus computerized tomography (Micro ...
David C Watts, Muhanad M Hatamleh
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Mechanical properties and bonding of maxillofacial silicone elastomers
Dental Materials, 2010 Maxillofacial silicone elastomers are used to replace facial parts lost through disease or trauma. However, these materials do not possess ideal properties. The purpose of this study was to investigate the mechanical properties of recently and previously introduced maxillofacial silicone elastomers and their bond strength to acrylic resin substrate ...
Hatamleh, Muhanad M. +1 more
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Properties of silicone maxillofacial elastomer processed in stone and metal
Journal of Prosthetic Dentistry, 19801. The effect of mold conditions on the UTS, n, and TS at 200% and 300% elongations, and Shore A hardness was measured for Silastic 44210. 2. There was no difference in n, Shore A hardness, and TS at 200% and 300% elongation between Silastic 44210 samples whether produced in metal or coated stone molds. 3.
C N, Raptis, R, Yu, J G, Knapp
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Spray coloring of silicone elastomer maxillofacial prostheses
Journal of Prosthetic Dentistry, 1969Pigment concentrates. The pigment concentrates are prepared by grinding the desired pigment with RTV 399 silicone elastomer in a mortar and pestle until a smooth pigment dispersion in silicone elastomer is obtained (Fig. 1). The formulations prepared are shown in Table I.
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Journal of Prosthetic Dentistry, 2008
Contemporary silicone-based elastomeric prostheses tend to degrade over time because of the effect of mechanical loading. Little has been reported on how the mechanical properties of a maxillofacial prosthetic elastomer may be affected by the addition of nanosized oxide particles used as an opacifier.The purpose of this study was to evaluate the effect
Yimin Zhao, Ying Han
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Contemporary silicone-based elastomeric prostheses tend to degrade over time because of the effect of mechanical loading. Little has been reported on how the mechanical properties of a maxillofacial prosthetic elastomer may be affected by the addition of nanosized oxide particles used as an opacifier.The purpose of this study was to evaluate the effect
Yimin Zhao, Ying Han
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Color stability of pigmented maxillofacial silicone elastomer: Effects of nano-oxides as opacifiers
Journal of Dentistry, 2010This study evaluated the effects of nano-oxides on the color stability of pigmented silicone A-2186 maxillofacial prosthetic elastomers before and after artificial aging.Each of three widely used UV-shielding nano-sized particle oxides (TiO(2), ZnO, CeO(2)), based on recent survey of the industry at 1%, 2%, 2.5% concentrations were combined with each ...
Yimin Zhao, Ying Han
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Porosity and Color of Maxillofacial Silicone Elastomer
Journal of Prosthodontics, 2010 Purpose: Prosthesis color production and stability as a result of pore entrapment during mixing has not been investigated for maxillofacial silicone prostheses.
Muhanad M. Hatamleh, David C. Watts
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Effect of nano-oxides on the color stability of maxillofacial silicone elastomers
The Journal of Prosthetic Dentistry, 2022A significant challenge of craniofacial prostheses is their limited service life because of degradation and color instability. In spite of improvements in the materials and techniques used for the fabrication of silicone maxillofacial prostheses, undesirable color change over time remains a challenge.
Simindokht Zarrati +3 more
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Use of thermochromic pigment in maxillofacial silicone elastomer
The Journal of Prosthetic Dentistry, 2013Silicone elastomers are used to fabricate external maxillofacial prostheses and are colored to match the adjacent facial skin. In cold winter weather, in certain individuals, the color of the skin changes toward red, which leads to a color difference between the prostheses and the surrounding tissue.The purpose of this study was to study the use of a ...
Kantola, RM +3 more
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