In Vitro analysis of effect of heat used in dental bleaching on human dental enamel

From a cosmetic point-of-view, white teeth are important for integration of an individual into society. Thus, dental bleaching may be used to reach this objective. When analyzing several proposed techniques, it was observed that heat is frequently involved either in direct application or as a result of a chemical reaction. Taking into account the importance of preserving dental structures, the present study analyzed possible injuries to enamel when heat is used in the bleaching procedure. A colorimetric method was used and the results showed that there was no difference when heat was used. In only one case did the non-communicating tufts become communicating.

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In vitro analysis of the pH stability of dental bleaching gels during in-office procedures

Journal of Clinical and Experimental Dentistry ◽

10.4317/jced.57367 ◽

2021 ◽

pp. e22-e29

Author(s):

R. de Mendonça ◽

J. Baliza ◽

A. Burey ◽

L. Cavalcante ◽

A. Loguercio ◽

...

Keyword(s):

Ph Stability ◽

Dental Bleaching ◽

Vitro Analysis ◽

Bleaching Gels ◽

Office Procedures ◽

In Vitro Analysis

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In vitro analysis of the effect of ragweed extract against Monilinia laxa

Acta Agraria Debreceniensis ◽

10.34101/actaagrar/47/2440 ◽

2012 ◽

pp. 117-120

Author(s):

Csaba Tamás Tóth ◽

Panna Márta Miskolczi ◽

Mária Csubák

Keyword(s):

Ambrosia Artemisiifolia ◽

Point Of View ◽

Biologically Active ◽

Monilinia Laxa ◽

Active Components ◽

The Public ◽

Vitro Analysis ◽

Active Substances ◽

In Vitro Analysis

Nowadays in Hungary nearly 5 million hectares of agricultural area was infected with ragweed (Ambrosia artemisiifolia). According to the public opinion the ragweed is a weed. From agricultural and public health point of view it is exceptionally dangerous plant. As it contains a number of useful active ingredients, based on this the ragweed is consider a medicinal plant. Our goal was to present that the ragweed contains antifungal active substances as well. In the experiments we used the pre-flowering plants with roots and we extracted the biological active components of dried plant. We tested the biological activity of the extracts against Monilinia laxa in vitro. We related based on our examination that ragweed contains biologically active agents, by which it is hampered the reproduction of the Monilinia laxa.

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In Vitro Analysis of the Erosive Potential of Whey Protein

Research Society and Development ◽

10.33448/rsd-v9i9.7742 ◽

2020 ◽

Vol 9 (9) ◽

pp. e487997742

Author(s):

Myrelle Leal Campos Sousa ◽

Isabela Alice Soares de Medeiros ◽

Liege Helena Freitas Fernandes ◽

Smyrna Luiza Ximenes de Souza ◽

Alidianne Fábia Cabral Cavalcanti ◽

...

Keyword(s):

Whey Protein ◽

Dental Enamel ◽

Soluble Solids ◽

Total Soluble Solids ◽

Significant Difference ◽

Vitro Analysis ◽

In Vitro Analysis

The objective of this study was to evaluate the pH and total soluble solids (TSS) content of whey protein beverages. Nine products of three different flavors (vanilla, strawberry and chocolate) of the following brands Muke®, Best Whey®, and Essencial Nutrition Whey®, had their pH evaluated by potentiometry, and their TSS evaluated by refractometry. The lowest pH recorded was for Muke® Chocolate (5.75), and the highest was for Essencial Nutrition Whey® Cacao (6.91). Regarding TSS, the lowest average was for Essencial Nutrition Whey® Vanilla (10.17), and the highest was for Essencial Nutrition Whey® Red Berry (16.66). There was no statistically significant difference in pH and TSS among the flavors and brands evaluated. It was concluded that the analyzed beverages had a higher pH than the pH that is critical to dental enamel and the TSS content was considered high.

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The native structure of the eukaryotic ribosome

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100075890 ◽

1983 ◽

Vol 41 ◽

pp. 432-433

Author(s):

R.A. Milligan ◽

P.N.T. Unwin

Keyword(s):

Ribosomal Proteins ◽

Crystal Form ◽

Native Structure ◽

X Ray Diffraction ◽

Eukaryotic Ribosome ◽

Vitro Analysis ◽

In Vitro Analysis ◽

Resolution Structure ◽

Stable Unit

A detailed understanding of the mechanism of protein synthesis will ultimately depend on knowledge of the native structure of the ribosome. Towards this end we have investigated the low resolution structure of the eukaryotic ribosome embedded in frozen buffer, making use of a system in which the ribosomes crystallize naturally.The ribosomes in the cells of early chicken embryos form crystalline arrays when the embryos are cooled at 4°C. We have developed methods to isolate the stable unit of these arrays, the ribosome tetramer, and have determined conditions for the growth of two-dimensional crystals in vitro, Analysis of the proteins in the crystals by 2-D gel electrophoresis demonstrates the presence of all ribosomal proteins normally found in polysomes. There are in addition, four proteins which may facilitate crystallization. The crystals are built from two oppositely facing P4 layers and the predominant crystal form, accounting for >80% of the crystals, has the tetragonal space group P4212, X-ray diffraction of crystal pellets demonstrates that crystalline order extends to ~ 60Å.

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1163: Radial Dilation of Ureteral Balloons: A Comparative in-Vitro Analysis

The Journal of Urology ◽

10.1016/s0022-5347(18)35308-4 ◽

2005 ◽

Vol 173 (4S) ◽

pp. 315-316

Author(s):

Kari Hendlin ◽

Brynn Lund ◽

Manoj Monga

Keyword(s):

Vitro Analysis ◽

In Vitro Analysis

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An In Vitro Analysis of Ligament Reconstruction or Extension Osteotomy on Trapeziometacarpal Joint Stability and Contact Area

Yearbook of Hand and Upper Limb Surgery ◽

10.1016/s1551-7977(08)70357-1 ◽

2007 ◽

Vol 2007 ◽

pp. 214-215 ◽

Cited By ~ 1

Author(s):

B. Wilhelmi

Keyword(s):

Contact Area ◽

Ligament Reconstruction ◽

Joint Stability ◽

Trapeziometacarpal Joint ◽

Vitro Analysis ◽

In Vitro Analysis

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Role of the 807 C/T Polymorphism of the α2 Gene in Platelet GP Ia Collagen Receptor Expression and Function

Thrombosis and Haemostasis ◽

10.1055/s-0037-1614605 ◽

1999 ◽

Vol 81 (06) ◽

pp. 951-956 ◽

Cited By ~ 59

Author(s):

J. Corral ◽

R. González-Conejero ◽

J. Rivera ◽

F. Ortuño ◽

P. Aparicio ◽

...

Keyword(s):

Venous Thrombosis ◽

Cell Types ◽

Receptor Expression ◽

Case Control Studies ◽

Platelet Surface ◽

Vitro Analysis ◽

And Function ◽

In Vitro Analysis

SummaryThe variability of the platelet GP Ia/IIa density has been associated with the 807 C/T polymorphism (Phe 224) of the GP Ia gene in American Caucasian population. We have investigated the genotype and allelic frequencies of this polymorphism in Spanish Caucasians. The T allele was found in 35% of the 284 blood donors analyzed. We confirmed in 159 healthy subjects a significant association between the 807 C/T polymorphism and the platelet GP Ia density. The T allele correlated with high number of GP Ia molecules on platelet surface. In addition, we observed a similar association of this polymorphism with the expression of this protein in other blood cell types. The platelet responsiveness to collagen was determined by “in vitro” analysis of the platelet activation and aggregation response. We found no significant differences in these functional platelet parameters according to the 807 C/T genotype. Finally, results from 3 case/control studies involving 302 consecutive patients (101 with coronary heart disease, 104 with cerebrovascular disease and 97 with deep venous thrombosis) determined that the 807 C/T polymorphism of the GP Ia gene does not represent a risk factor for arterial or venous thrombosis.

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