Biomaterials & Instrumentation at Universidad De San Pablo CEU | Flashcards & Summaries

Lernmaterialien für Biomaterials & Instrumentation an der Universidad de San Pablo CEU

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Which of the following cement bonds to tooth structure has an anticariogenic effect, a degree of translucency and does not irritate the pulp?

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Glass ionomer cement

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Which of the following impression materials present higher details reproducibility and precision in an environment slightly wet?

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Polyether materials

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What type of gypsum product is mainly used to create models for fixed prosthodontics (inlay, onlay, crowns, and bridges)?

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Type IV

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Regarding glass ionomer cements:

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TESTE DEIN WISSEN

The powder is an fluoro-aluminosilicate glass

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TESTE DEIN WISSEN

If dental plaster is mixed with hot water, it is possible to attain a reduction of the setting time. Please indicate the temperature at which the plaster will not set anymore:

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TESTE DEIN WISSEN

100°C

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Which of the following is an inelastic impression material/ characterized by brittle properties?

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ZOE impression paste

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TESTE DEIN WISSEN

If CaSO4X 1/2H2O is calcinated at 200-300 degrees Celsius, what chemical phase is obtained?

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Soluble anhydrite

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What type of impression material would you use to take a precision impression for inlays and onlays?

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Addition Silicones

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TESTE DEIN WISSEN

In common light cure systems, the wavelength of radiation is in excess of:

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TESTE DEIN WISSEN

400 nm

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TESTE DEIN WISSEN

Calculate the bond strength in mega pascal (MPa) for the following micro-tensile test: The specimen had a rectangular shape (0.9 x 1 mm) and it had a fracture toughness at 55N.

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TESTE DEIN WISSEN

61.1 MPa

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When waxes are heated:

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TESTE DEIN WISSEN

They expand significantly

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TESTE DEIN WISSEN

When an agar impression slightly contracts and exudes water, it is undergoing/ The process of exuding water vapors and shrinking of alginate is:

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TESTE DEIN WISSEN

Syneresis

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Beispielhafte Karteikarten für deinen Biomaterials & Instrumentation Kurs an der Universidad de San Pablo CEU - von Kommilitonen auf StudySmarter erstellt!

Q:

Which of the following cement bonds to tooth structure has an anticariogenic effect, a degree of translucency and does not irritate the pulp?

A:

Glass ionomer cement

Q:

Which of the following impression materials present higher details reproducibility and precision in an environment slightly wet?

A:

Polyether materials

Q:

What type of gypsum product is mainly used to create models for fixed prosthodontics (inlay, onlay, crowns, and bridges)?

A:

Type IV

Q:

Regarding glass ionomer cements:

A:

The powder is an fluoro-aluminosilicate glass

Q:

If dental plaster is mixed with hot water, it is possible to attain a reduction of the setting time. Please indicate the temperature at which the plaster will not set anymore:

A:

100°C

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Q:

Which of the following is an inelastic impression material/ characterized by brittle properties?

A:

ZOE impression paste

Q:

If CaSO4X 1/2H2O is calcinated at 200-300 degrees Celsius, what chemical phase is obtained?

A:

Soluble anhydrite

Q:

What type of impression material would you use to take a precision impression for inlays and onlays?

A:

Addition Silicones

Q:

In common light cure systems, the wavelength of radiation is in excess of:

A:

400 nm

Q:

Calculate the bond strength in mega pascal (MPa) for the following micro-tensile test: The specimen had a rectangular shape (0.9 x 1 mm) and it had a fracture toughness at 55N.

A:

61.1 MPa

Q:

When waxes are heated:

A:

They expand significantly

Q:

When an agar impression slightly contracts and exudes water, it is undergoing/ The process of exuding water vapors and shrinking of alginate is:

A:

Syneresis

Biomaterials & Instrumentation

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