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Siloxanes (0):
Recent article
Siloxanes
Abstract
I and II with 30 samples each respectively. Each group was subdivided into 3 subgroups with 10 samples each which were treated differently. All the specimens were measured for the linear dimensional change and surface hardness and the obtained data was statistically analyzed. Surface roughness was e...
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PMID: 21528683
PDF is available here.
PDF is available here.
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Abstract
Clefts of the palate, alveolus and lip are some of the most frequently encountered anomalies of the face. This article presents a case report of a neonate with cleft lip and palate in whom a feeding obturator was delivered. This article demonstrates the indications, construction, and benefits of a pa...
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PMID: 21521924
PDF is available here.
PDF is available here.
Dental Materials Journal (29)4 2010
Abstract
This study examined the adaptation accuracy of acrylic denture base processed using fluid-resin (PERform), injection-moldings (SR-Ivocap, Success, Mak Press), and two compression-molding techniques. The adaptation accuracy was measured primarily by the posterior border gaps at the mid-palatal area u...
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PMID: 20675954
PDF is available here.
PDF is available here.
Chemosphere (80)8 2010
Abstract
The separation of synthetic dye Rhodamine 6G (R6G) and water was investigated using blended organic liquids in a supported liquid membrane (SLM) extraction system. Liquid membrane (LM) components include octyl alcohol (OcOH) as the dye extractant and a polysiloxane liquid as the stabilizing agent. I...
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PMID: 20553932
PDF is available here.
PDF is available here.
Abstract
We employed a recently developed, quality assured method to measure D(5) concentration in ambient air at a rural site in Sweden. The samples were collected with daily resolution between January and June 2009. The D(5) concentration ranged from 0.3 to 9 ng m(-3), which is 1-3 orders of magnitude lowe...
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PMID: 20568739
PDF is available here.
PDF is available here.
Abstract
Increasing the setting time might be necessary for impression materials with a polyether backbone to improve elastic recovery....
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PMID: 20416412
PDF is available here.
PDF is available here.
Abstract
In spite of some significant differences found in sulcus-reproducing ability with hydrophilic and hydrophobic impression materials applied at different impression-making temperatures and with different techniques, the practical relevance is limited....
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PMID: 20213014
PDF is available here.
PDF is available here.
Abstract
To evaluate the influence of loading forces on the vertical discrepancies caused by interocclusal recording materials.
A custom-made apparatus was used to simulate the maxilla and mandible. Eight interocclusal records were made in each of the following groups: G1-Aluwax (aluminum wax; Aluwax), G2-Be...
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PMID: 20165738
PDF is available here.
PDF is available here.
Abstract
To demonstrate the clinical feasibility of autoclaving certain silicone impression materials in order to avoid potential cross-contamination during handling, transport, and subsequent processing.
Semicritical devices are recommended to be treated at least with high-level disinfectants or actually st...
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PMID: 20953566
PDF is available here.
PDF is available here.
Stomatologiia (89)3 2010
Abstract
Home made siloxan material <> for making external face prosthesis was introduced into clinical practice. Original technique of making external face prosthesis for defects and deformations of middle zone of face based upon making individual prosthetics according to esthetic requirements of t...
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PMID: 20559237
PDF is available here.
PDF is available here.
Abstract
In vitro studies showed superior impression correctness for one-stage impressions. However, clinical data, especially clinical trials, are lacking in this matter. The aim of the study was to investigate the three-dimensional correctness of impressions for final restorations applying three different...
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PMID: 20927421
PDF is available here.
PDF is available here.
Abstract
This in vitro study aimed to evaluate the gingival microleakage in class II cavities in primary molars restored with a low shrink silorane resin composite (Filtek P90) or a nanohybride composite resin (Filtek supreme XT) using three different techniques, (total bonding, closed or ope...
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PMID: 21417120
PDF is available here.
PDF is available here.
Operative Dentistry (35)3 2010
Abstract
The overall mean marginal gaps (microm) for the three methods were: IP = 111.6 (+/- 34.0); EP = 161.4 (+/- 37.6) and ES = 116.8 (+/- 42.3). IP and ES were equal, but both were significantly less than EP. The pooled mean marginal gaps (microm) for the occlusal = 110.5 (+/- 39) and lingual = 111.5 (+/...
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PMID: 20533633
PDF is available here.
PDF is available here.
Abstract
We investigated the behaviour of siloxanes, which adversely affect biogas engines, as well as their concentration levels in sewage sludge biogas in Japan. We also performed experiments on the absorptive removal of siloxanes using various adsorbents and determined the main adsorbent characteristics r...
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PMID: 20388997
PDF is available here.
PDF is available here.
Abstract
Abstract
The modification of cyclo-olefin polymer Zeonor by plasma-enhanced chemical vapor deposition to form a silica-like surface and evaluation of its application for lateral flow bioassays applications are discussed in this study. The SiOx layer was extensively characterized using contact angle measureme...
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PMID: 19735157
PDF is available here.
PDF is available here.
Abstract
We describe a simple particle lithography technique to fabricate substrates with hexagonally patterned dots of protein surrounded by a protein-repellent layer of poly(ethylene glycol). Using this bottom-up approach, dot arrays of three different proteins (fibrinogen, P-selectin, and human serum albu...
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PMID: 19670836
PDF is available here.
PDF is available here.
Abstract
Fibrous tissue encapsulation may slow the diffusion of the target analyte to an implanted sensor and compromise the optical signal. Poly(N-isopropylacrylamide) (PNIPAAm) hydrogels are thermoresponsive, exhibiting temperature-modulated swelling behavior that could be used to prevent biofouling. Unfor...
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PMID: 18563815
PDF is available here.
PDF is available here.
Abstract
Siloxanes are widely used in different applications: health care, dry cleaning, household products, paints and coatings, paper, personal care, for example. This explains their prevalence in the environment. Because of their volatile nature, most of the time they are dispersed in the atmosphere, but...
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PMID: 19886432
PDF is available here.
PDF is available here.
Abstract
We note the functional platform of caveolae with dual functions, internalization of external substances and cell signalings leading to nitric oxide release, and hypothesize that the switching of enzyme activity of endothelial nitric oxide synthase can be achieved by targeting caveolae with nanoparti...
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PMID: 19583242
PDF is available here.
PDF is available here.
Abstract
A disposable, low-cost colorimetric sensor array has been created by pin-printing onto a hydrophilic membrane 16 chemically responsive nanoporous pigments that are comprised of indicators immobilized in an organically modified silane (ormosil). The array has been used to detect and identify 14 diffe...
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PMID: 20337402
PDF is available here.
PDF is available here.
Abstract
Biofouling (25)6 2009
Abstract
Fouling-release coatings were prepared from blends of a fluorinated/siloxane copolymer with a poly(dimethyl siloxane) (PDMS) matrix in order to couple the low modulus character of PDMS with the low surface tension typical for fluorinated polymers. The content of the surface-active copolymer was varie...
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PMID: 19373571
PDF is available here.
PDF is available here.
Abstract
Abstract
Today, dental implant therapy is considered a valuable asset of mainstream dental therapeutics by both patients and clinicians. In many ways, the availability of implant therapy to facilitate the support, stability, and retention of dental prostheses has revolutionized the profession and the procedu...
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PMID: 19630250
PDF is available here.
PDF is available here.
Dental Materials Journal (28)3 2009
Abstract
The purpose of this study was to investigate the effects of food-simulating liquids (FSL) on the hardness and flexural strength (FS) of a new silorane-based composite and to compare it with methacrylate-based composites (MBCs). Four restorative materials (Filtek Silorane, P60, Z250, and Supreme XT)...
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PMID: 19662736
PDF is available here.
PDF is available here.
Abstract
Vinyldisiloxanes equilibrate with the corresponding silanolates under basic conditions and subsequently undergo palladium catalysed cross coupling with aryl/heteroaryl iodides and bromides.
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PMID: 19262923
PDF is available here.
PDF is available here.
Optics Express (17)4 2009
Abstract
We report here on the use of nanoimprint technology to fabricate low loss broadband high index contrast waveguides in a Polysiloxane polymer system for the first time....
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PMID: 19219165
PDF is available here.
PDF is available here.
ChemPhysChem (10)1 2009
Abstract
Abstract
Statistical analysis of microleakage scores revealed no significant difference among the groups tested (P>.05, Kruskal-Wallis test). CONCLUSION: The tested LED curing units may provide reduction in total application time without comprising marginal integrity of the ormocer-based sealant....
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PMID: 19341580
PDF is available here.
PDF is available here.
Abstract
Alkenyl silanes are efficiently converted to the corresponding silyl cyclopropanes in the presence of a slight excess of diazomethane (2-4 equiv) and a low loading of Pd(OAc)(2) (<0.5 mol %). Diazoethane and diazobutane can also be employed and yield silyl cyclopropanes with diastereoselectivities o...
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PMID: 19191237
PDF is available here.
PDF is available here.
Abstract
OBJECTIVES: The dual-arch impression technique is convenient in that it makes the required maxillary and mandibular impressions, as well as the inter-occlusal record in one procedure. The accuracy of inter-abutment distance in dies fabricated from dual-arch impression technique remains in question b...
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PMID: 20139562
PDF is available here.
PDF is available here.
Abstract
This review focuses on novel carbosilane dendrimers containing branches with Si-C and Si-O-C bonds. Introduction of organic moieties into the dendrimers is performed by hydrosilation of carbon-carbon double/triple bonds. Versatile organic or organometallic moieties are introduced onto the peripheral...
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PMID: 19783954
PDF is available here.
PDF is available here.
General dentistry (57)5 2009
Abstract
Dimensionally accurate occlusal registration records are essential for restorative dentistry; moreover, since records are not used immediately or may be used more than once, the registration material should exhibit accuracy over time (a concept known as dimensional stability). It has been speculated...
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PMID: 19903644
PDF is available here.
PDF is available here.
Operative Dentistry (34)2 2009
Abstract
The accurate diagnosis of non-cavitated occlusal caries is generally considered problematic. Induced fluorescence quantified by the DIAGNOdent device (KaVo) gives a reading from 0-99, which may help in the caries diagnostic process. There is some controversy around the implication of increased sever...
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PMID: 19363968
PDF is available here.
PDF is available here.
General dentistry (57)2 2009
Abstract
This study compared the average marginal gap of Procera crowns fabricated from a definitive cast made from polyurethane resin with those made from type IV stone. A metallic maxillary central incisor and first premolar were prepared according to the Procera guidelines and incorporated into a U-shaped...
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PMID: 19552368
PDF is available here.
PDF is available here.
Dental Materials Journal (28)3 2009
Abstract
In this study, the surface hardness of five light-cured composite resins were evaluated, namely: filled (Estelite), nanofil (AElite), unfilled (Valux Plus), hybrid (Tetric ceram), and Ormocer-based (Admira) composite resins. The microhardness values of composite specimens were measured at the top an...
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PMID: 19662734
PDF is available here.
PDF is available here.
Abstract
The aim of this study was to investigate the contact angles of six different type 3 dental impression materials (DIMs). Contact angles (n = 3) were continuously determined for 20 seconds after placing 4 MuL of deionized water onto a thin layer (50 Mum) of freshly mixed DIM (polyvinyl siloxane, C-sil...
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PMID: 19639079
PDF is available here.
PDF is available here.
Acta Biomaterialia (5)1 2009
Abstract
We attempted to prepare chitosan-silicate hybrid for use in a medical application and evaluated the physico-chemical properties and osteocompatibility of the hybrids as a function of gamma-glycidoxypropyltrimethoxysilane (GPTMS) concentration. Chitosan-silicate hybrids were synthesized using GPTMS a...
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PMID: 18722166
PDF is available here.
PDF is available here.
Abstract
Several ocular and orbital disorders require surgical intervention that may result in ocular defects. Immediate intervention is required to preserve the anophthalmic socket size and prevent scar tissue contractures that may follow surgery. Unfortunately, immediate fitting of an anophthalmic socket w...
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PMID: 18761579
PDF is available here.
PDF is available here.
Chemical Society Reviews (37)12 2008
Abstract
RNA can be chemically synthesized by automated DNA/RNA synthesizers, using protected ribonucleosides activated as phosphoramidites. The efficiency of the synthesis depends greatly on the protecting groups used, especially the protecting group on the 2'-hydroxyl functionality. The strategies employed...
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PMID: 19020680
PDF is available here.
PDF is available here.
Abstract
All techniques caused a temporary gingival inflammation; the greatest was in Expasyl, which also showed slower recovery. Cordless techniques did not induce bleeding during or after retraction....
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PMID: 19040582
PDF is available here.
PDF is available here.
Neurologia Medico-Chirurgica (48)12 2008
Abstract
Experience with dissection of the cavernous sinus and the temporal bone is essential for training in skull base surgery, but the opportunities for cadaver dissection are very limited. A modification of a commercially available prototype three-dimensional (3D) skull base model, made by a selective la...
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PMID: 19106500
PDF is available here.
PDF is available here.
Abstract
Organically modified silica nanoparticles doped with Nile Red were synthesized and characterized. Silica encapsulation is relatively transparent for light and can protect hydrophobic Nile Red against denaturalization induced by the extreme bio-environment, making the entire nanoparticle hydrophilic...
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PMID: 19030044
PDF is available here.
PDF is available here.
Abstract
The synthesis and intramolecular Diels-Alder reactions of trienes 5 and 6 with a siloxacyclopentene-constrained dienophile are described. These reactions provide the primary cycloadducts 7 and 8 with high diastereoselectivity. These cycloadducts possess trans-relationships between the ring fusion pr...
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PMID: 18954061
PDF is available here.
PDF is available here.
Abstract
A general catalytic method for the hetero-Diels-Alder reaction between Danishefsky-type siloxy dienes and ketones was developed. Optimum results were produced with a catalyst generated from CuOTf x (C6H6)1/2 and TBAT with Ph 3PO as the catalytic additive. This reaction was extended to an asymmetric...
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PMID: 18959423
PDF is available here.
PDF is available here.
Journal of Physical Chemistry B (112)46 2008
Abstract
A comprehensive study is reported of Langmuir-Blodgett (LB) films (spread at the air/water interface using the Langmuir balance technique) composed of surface active, nonionic, and OH-free amphiphilic siloxane phosphonate ester macromolecules. Analysis is made on three molecular structures in the fo...
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PMID: 18610958
PDF is available here.
PDF is available here.
Journal of Chromatography A (1211)1-2 2008
Abstract
The use of absorbents as retaining materials in the through oven transfer adsorption desorption interface (TOTAD) of an on-line coupled reversed-phase liquid chromatography-gas chromatography system (RPLC-GC) is proposed for the first time. A comparative study of an adsorbent (Tenax TA) and two abso...
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PMID: 18922537
PDF is available here.
PDF is available here.
Physical Review Letters (101)20 2008
Abstract
Interfacial dynamics of membrane-enclosed fluid volumes in viscous flows is complicated due to the coupling of the fluid dynamics with the membrane properties. Based on computational investigation via our interfacial spectral boundary element algorithm, our study shows that a (strain-hardening) Skal...
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PMID: 19113382
PDF is available here.
PDF is available here.
Abstract
We estimated the maximum possible mass transfer rate of D4 in the biotrickling filter to be in the range of 30-100 mg m(-3) h(-1). These values are low and suggest that mass transfer limitations play an important role in the low treatment performance that was observed. The possibility of enhancing D...
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PMID: 19068840
PDF is available here.
PDF is available here.
Abstract
Novel ruthenium-encapsulating polysiloxane gels are prepared by treatment of polymethylhydrosiloxane with diols in the presence of (mu(3),eta(2),eta(3),eta(5)-acenaphthylene)Ru(3)(CO)(7), and act as reusable catalysts in the isomerization of alkenes without leakage of the catalyst species.
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PMID: 18985197
PDF is available here.
PDF is available here.
Abstract
To elucidate interactions of neutral organic contaminants (NOCs) with siloxane surfaces (often referred to hydrophobic nanosites)found between cations in 2:1 phyllosilicates, adsorption of aliphatic and aromatic compounds onto both internal and external siloxane surfaces oftetramethylammonium-interc...
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PMID: 19031880
PDF is available here.
PDF is available here.
Biological Psychiatry (64)9 2008
Abstract
Patients demonstrated robust ID/ED deficits. However, their siblings were minimally impaired, and this impairment did not seem to run in families. These results suggest that impairments on attentional set shifting assessed by ID/ED task are strongly associated with clinical illness, but these impair...
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PMID: 18597738
PDF is available here.
PDF is available here.
Abstract
Abstract
Restorations made on incorrectly mounted casts might require considerable intra-oral adjustments to correct the occlusion or might even necessitate a remake of the restoration. The aim of this study was to evaluate interocclusal recording materials for their ability to reproduce accurate vertical in...
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PMID: 18482345
PDF is available here.
PDF is available here.
Abstract
The aim of this study was to assess by means of a three-dimensional computed tomography scanning system the occlusal surface characteristics of dental casts made using two different impression materials. Alginate and polyvinyl siloxane impressions were taken of 20 dental students resulting in 40 den...
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PMID: 18482343
PDF is available here.
PDF is available here.
Abstract
In this in vitro experiment, changing the velocity of seating had a significant effect on the peak pressure produced during simulated impressions....
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PMID: 18992572
PDF is available here.
PDF is available here.
Cutis; cutaneous medicine for the practitioner (82)4 Suppl 2008
Abstract
We report the results of trials undertaken to explore the substantivity and barrier protection properties of this new product when applied to clinically normal skin, as well as the beneficial effects when applied to inflamed skin, including skin affected by eczema. The results indicate that the crea...
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PMID: 19202673
PDF is available here.
PDF is available here.
Cutis; cutaneous medicine for the practitioner (82)4 Suppl 2008
Abstract
Patients with contact dermatitis require both preventive and therapeutic interventions to minimize their burden of disease. The ideal product would support resolution of inflamed skin without the use of glucocorticoids while protecting undamaged skin against further contact with irritants and antige...
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PMID: 19202672
PDF is available here.
PDF is available here.
Abstract
We determined the biostability and biocompatibility of two types of amphiphilic conetworks (APCNs): (1) hydrophilic poly(N,N-dimethyl acrylamide) (PDMAAm) and hydrophobic polydimethylsiloxane (PDMS) microdomains co-crosslinked with polymethylhydrosiloxane (PMHS) clusters (PDMAAm/PMHS/PDMS), and (2)...
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PMID: 18085659
PDF is available here.
PDF is available here.