Dental Materials - Exam 2 - (Chapters 6, 11, 12, 13, 14, 15, 17, 19)

dental-materials-exam-2-chapters-6-11-12-13-14-15-17-19

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Question 1 of 1

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427008

120

block

(AgHg) is strong and resists corrosion but brittle, matrix that holds the material together. This is called:

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427010

120

none

(SnHg) is the weakest phase also known as

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427012

120

none

Mixing of amalgam depends on:

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427013

120

none

When mixing an amalgam, JUST RIGHT appears:

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427025

120

none

Properties of amalgam

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Match the text
Creep
Corrosion
Tarnish
Strength
Dimensional change

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Dimensional change under load Chewing forces ruins marginal integrity and destroys filling High Cu (no gamma 2 phase) better resistant to force
Good compressive strength with sufficient bulk Strength increases with time Gamma phase is the strongest Over mixing produces a weaker compound Good condensing is essential
Surface is dulled or discolored by chemicals in the oral cavity. Looks bad but will not destroy the function of the restoration
Best results come from following manufacturers recommendations to minimize post-op expansion and contraction
Some elements help to seal the interface and provide protection Galvanic (electrical/moisture combo) due to 2 or metallic phases Eventually lead to failure, unless recurrent decay or fracture happen 1st

427027

120

none

In amalgam, Tin will reduce strength and corrosion resistance and will maximize oxidation.

Select the correct answer(s).

(0/0)

427028

120

none

Lowering the mercury content increases the strength and results in less marginal breakdown. Increasing the mercury content decreases the strength and results in more marginal breakdown.

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427029

120

none

In the high-copper amalgam reaction, tin reacts with copper rather than with mercury

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427030

120

none

Amalgam restoration is COMMONLY used for Class ________ caries.

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426914

120

none

Low copper alloys contains:

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426915

120

none

High copper mix with less mercury, makes better and stronger restorations

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(0/0)

426917

120

none

Which of the following best describes AMALGAM: Choose all that apply. (Note: Definition of AMALGAM)

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426918

120

none

Alloy is mixture of 2 or more metals. Mercury is the only metal that is liquid at room temperature

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426920

120

none

Match the following types of alloys classified by the shape of alloy particles.

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Match the text
Lathe-cut
Spherical
Admixed

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alloy is melted then sprayed through a nozzle
produces irregular shapes with sharp, rough edges
combo of lathe-cut and spherical

426921

120

none

Mixing of amalgams is also known as

Select the correct answer(s).

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Dental Materials - Exam 2 - (Chapters 6, 11, 12, 13, 14, 15, 17, 19)

Question 1 of 1

Time Left

(AgHg) is strong and resists corrosion but brittle, matrix that holds the material together. This is called:

Select the correct answer(s).

(0/0)

(SnHg) is the weakest phase also known as

Select the correct answer(s).

(0/0)

Mixing of amalgam depends on:

Select the correct answer(s).

(0/0)

When mixing an amalgam, JUST RIGHT appears:

Select the correct answer(s).

(0/0)

Properties of amalgam

Match the text (click and drag)

(0/0)

Creep

Corrosion

Tarnish

Strength

Dimensional change

Dimensional change under load Chewing forces ruins marginal integrity and destroys filling High Cu (no gamma 2 phase) better resistant to force

Good compressive strength with sufficient bulk Strength increases with time Gamma phase is the strongest Over mixing produces a weaker compound Good condensing is essential

Surface is dulled or discolored by chemicals in the oral cavity. Looks bad but will not destroy the function of the restoration

Best results come from following manufacturers recommendations to minimize post-op expansion and contraction

Some elements help to seal the interface and provide protection Galvanic (electrical/moisture combo) due to 2 or metallic phases Eventually lead to failure, unless recurrent decay or fracture happen 1st

In amalgam, Tin will reduce strength and corrosion resistance and will maximize oxidation.

Select the correct answer(s).

(0/0)

Lowering the mercury content increases the strength and results in less marginal breakdown. Increasing the mercury content decreases the strength and results in more marginal breakdown.

Select the correct answer(s).

(0/0)

In the high-copper amalgam reaction, tin reacts with copper rather than with mercury

Select the correct answer(s).

(0/0)

Amalgam restoration is COMMONLY used for Class ________ caries.

Select the correct answer(s).

(0/0)

Low copper alloys contains:

Select the correct answer(s).

(0/0)

High copper mix with less mercury, makes better and stronger restorations

Select the correct answer(s).

(0/0)

Which of the following best describes AMALGAM: Choose all that apply. (Note: Definition of AMALGAM)

Select the correct answer(s).

(0/0)

Alloy is mixture of 2 or more metals. Mercury is the only metal that is liquid at room temperature

Select the correct answer(s).

(0/0)

Match the following types of alloys classified by the shape of alloy particles.

Match the text (click and drag)

(0/0)

Lathe-cut

Spherical

Admixed

alloy is melted then sprayed through a nozzle

produces irregular shapes with sharp, rough edges

combo of lathe-cut and spherical

Mixing of amalgams is also known as

Select the correct answer(s).

(0/0)

Results

Correct

0

Incorrect

0

Skipped

0

Overall Percentage

0%

Rate Quiz