Results 151 to 160 of about 120,511 (185)
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Light-weight RTV silicone for maxillofacial prostheses
The Journal of Prosthetic Dentistry, 1976Weight is a problem in retention of large skin-textured maxillofacial prostheses. The purpose of this investigation was to test the feasibility of mixing foam RTV silicone rubber with conventional RTV silicone rubber to obtain a light-weight material.
D N, Firtell, M L, Donnan, C R, Anderson
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The use of RTV silicones in maxillofacial prosthetics
The Journal of Prosthetic Dentistry, 1970Abstract The silicones may be used for practically any restoration of tissue and may be cemented to hard acrylic resin where necessary. The advantages include the physical properties of chemical inertness, thermal and dimensional stability, elasticity, flexibility, and skin-like texture.
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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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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 D Paravina, John M Powers
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Maxillofacial Silicone Elastomers in Dentistry
2020Maxillofacial prostheses are used for patients with deformities in the maxillofacial area induced by cancer, trauma or congenital defects. Different types of polymers are used in the manufacture of maxillofacial prosthesis. However, silicone elastomers are the polymers most commonly used in the maxillofacial prosthodontics because of their acceptable ...
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Properties of Maxillofacial Silicone Elastomers Reinforced with Silica Powder
Journal of Biomaterials Applications, 1998Compounds of a silicone elastomer suitable for preparing maxillo-facial prostheses, reinforced with various amounts of silica powder, have been studied for their mechanical response and wetting properties in terms of contact angle. Tensile strength and elongation at break showed an increase with increasing silica volume fraction up to 35%, whereas the ...
A G, Andreopoulos +2 more
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Adhesive retention of silicone and chlorinated polyethylene for maxillofacial prostheses
The Journal of Prosthetic Dentistry, 2008A key factor of a successful facial prosthesis is the retention of the prosthesis to the patient's skin, especially when there is no mechanical means and the retention depends primarily on medical skin adhesives. Studies determining which medical adhesives provide the best bond strength for maxillofacial prostheses are needed.The purpose of this study ...
Sudarat, Kiat-Amnuay +3 more
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Spray coloring of silicone elastomer maxillofacial prostheses
The 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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Properties of a modified cross‐linked silicone for maxillofacial prostheses
Journal of Oral Rehabilitation, 1987SummaryA dimethyl siloxane‐triacetoxy terminated silane, Type A adhesive, can be modified with the base component of a medium grade polydimethyl siloxane with vinyl groups, MDX 4‐4210, to produce more pliable maxillofacial prostheses. The mechanical properties of samples with various Type A adhesive/MDX 4‐4210 ratios were determined.
J W, Farah +4 more
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Properties of silicone maxillofacial elastomer processed in stone and metal
The 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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