Dental Amalgam Properties and Classification

<p>Dental pulp condition. (A)</p> Signup and view all the answers

<p>It enhances compressive strength. (D)</p> Signup and view all the answers

<p>It reduces the overall strength. (B)</p> Signup and view all the answers

<p>Insertion of too large increments. (C)</p> Signup and view all the answers

<p>It increases strength with time. (C)</p> Signup and view all the answers

<p>It has been used successfully for over a century. (C)</p> Signup and view all the answers

<p>Contain more than 13-30% copper. (D)</p> Signup and view all the answers

<p>Potential gaps between the restoration and tooth. (D)</p> Signup and view all the answers

<p>Longer trituration times. (D)</p> Signup and view all the answers

<p>Modern amalgams show a net contraction. (D)</p> Signup and view all the answers

<p>Contraction only. (B)</p> Signup and view all the answers

<p>They have an irregular shape. (D)</p> Signup and view all the answers

<p>The color of the restoration. (C)</p> Signup and view all the answers

<p>Soap and water (A)</p> Signup and view all the answers

<p>Use water spray and high suction (A)</p> Signup and view all the answers

<p>Using pre-proportioned capsules (C)</p> Signup and view all the answers

<p>Spherical alloys (C)</p> Signup and view all the answers

<p>Weaker mechanical properties (B)</p> Signup and view all the answers

<p>They do not allow for accurate measurements (D)</p> Signup and view all the answers

<p>Less than 1:1 (A), Exceeds 1:1 (B)</p> Signup and view all the answers

<p>Standardized procedure (D)</p> Signup and view all the answers

<p>Biting too hard (D)</p> Signup and view all the answers

<p>Marginal breakdown of low copper amalgam (B)</p> Signup and view all the answers

<p>Trituration and condensation timing (A)</p> Signup and view all the answers

<p>Causes loss of luster without changing mechanical properties (B)</p> Signup and view all the answers

<p>Increased porosity and loss of strength (D)</p> Signup and view all the answers

<p>Y2 phase presence (D)</p> Signup and view all the answers

<p>Rough surfaces and moisture contamination (C)</p> Signup and view all the answers

<p>It leads to increased marginal deterioration (D)</p> Signup and view all the answers

<p>Increases corrosion (C)</p> Signup and view all the answers

<p>They increase galvanic corrosion (D)</p> Signup and view all the answers

<p>Smooth and polish the restoration (C)</p> Signup and view all the answers

<p>Greater y2 content (B)</p> Signup and view all the answers

<p>It has a cumulative toxic effect (C)</p> Signup and view all the answers

<p>Using a liner with a low thermal diffusivity (D)</p> Signup and view all the answers

<p>They can be absorbed through the skin (D)</p> Signup and view all the answers

<p>Ventilate the clinic well (B)</p> Signup and view all the answers

<p>It appears as a solid mass without luster. (A), It is crumbly and has low strength. (C)</p> Signup and view all the answers

<p>To adapt the amalgam mass to the cavity walls. (B)</p> Signup and view all the answers

<p>Irregularly shaped alloys (A)</p> Signup and view all the answers

<p>Small tip condensers. (A)</p> Signup and view all the answers

<p>Increases compressive strength. (D)</p> Signup and view all the answers

<p>To reproduce the tooth anatomy. (B)</p> Signup and view all the answers

<p>Increase the roughness of the surface. (C)</p> Signup and view all the answers

<p>They increase mercury vapor levels. (A)</p> Signup and view all the answers

A metallic material used for dental restorations, composed of mercury and a mixture of silver, tin, copper, and zinc.

A type of dental amalgam containing less than 6% copper, often associated with greater dimensional changes during setting.

A type of dental amalgam containing 13-30% copper, known for improved strength and reduced dimensional changes.

Dental Amalgam containing more than 0.01% zinc, often used in traditional amalgam alloys.

Dental Amalgam containing less than 0.01% zinc, known for their improved handling and reduced corrosion.

The process of grinding or mixing dental amalgam alloy particles with mercury to achieve a workable consistency.

The change in volume of dental amalgam during the setting process, which can affect the fit and function of the restoration.

A measure of how much mercury is used relative to the amount of alloy in a dental amalgam mixture.

Delayed expansion of amalgam due to moisture contamination during preparation, leading to internal pressure and potential pulp sensitivity.

The compressive strength of amalgam is high, but its tensile and bending strengths are low.

Insufficient or excessive trituration of amalgam can weaken the final restoration.

Adequate mercury content ensures proper wetting of alloy particles, leading to a stronger and smoother surface.

Condensation pressure during placement directly impacts amalgam strength, minimizing porosity and maximizing adaptation.

Voids and porosity within amalgam significantly reduce its strength.

Amalgam gains strength over time, but this process is not as fast as desired.

The time it takes for dental amalgam to reach at least 70% of its final strength.

The ability of a material to resist deformation under stress.

The process of permanent, time-dependent deformation of amalgam under constant or intermittent stress.

The loss of luster from a metal's surface due to a surface coating.

The gradual deterioration of a metal due to chemical or electrochemical reaction with its environment.

The ratio of mercury to alloy used in a dental amalgam mixture.

The process of mixing dental amalgam alloy particles with mercury to achieve the desired consistency.

The amount of pressure applied during condensation of amalgam.

Metallic restorations that are susceptible to corrosion, which can be influenced by factors like the contact of dissimilar metals, moisture contamination, and the type of alloy used.

The process of using high-speed instruments to remove old amalgam restorations, which increases the risk of mercury exposure.

The mixing of mercury and alloy powder to create a workable paste for dental restorations.

The process of compacting the amalgam paste into the prepared cavity, ensuring proper adaptation and shaping.

A high thermal conductivity material used in dentistry for filling cavities, requiring attention to insulating the cavity base.

A type of corrosion product that forms at the interface between the amalgam restoration and the tooth, potentially sealing the gap and reducing leakage.

The potential for mercury to accumulate in the body over time, posing health risks, especially to dental professionals.

Steps taken to minimize mercury exposure during amalgam procedures, such as proper ventilation and storage of mercury waste.

The process of mixing amalgam alloy particles with mercury to create a workable consistency.

A device used for mechanically mixing amalgam alloy and mercury.

The amount of time it takes to mix amalgam alloy and mercury using an amalgamator.

The ratio of mercury to amalgam alloy used in a mixture.

Amalgam with insufficient mercury content often results in a dry, crumbly mix.

Amalgam with excessive mercury content results in a sticky, difficult-to-handle mix with lower strength and increased dimensional changes.

Insufficient trituration of amalgam leads to poor mixing and a weak restoration.

Excessive trituration of amalgam can result in over mixing, producing decreased strength and increased dimensional changes.

The process of compacting amalgam into the prepared cavity, removing excess mercury and reducing voids to achieve a strong and well-adapted restoration.

The use of instruments to shape and smoothen the amalgam filling, ensuring proper anatomy and contours for a functional restoration.

A technique used to smooth the surface of the amalgam filling, improving its smoothness and reducing plaque accumulation.

The application of abrasive materials to create a smooth, polished surface for the amalgam filling, minimizing corrosion and plaque buildup.

A type of amalgam where the filling is made of a grainy mixture, resulting in low strength and poor resistance to corrosion.

A type of amalgam with a smooth and shiny surface, indicative of proper mixing and optimal properties.

A type of amalgam that is soupy and tends to stick to the instruments, indicating excessive mercury during mixing, leading to a weaker restoration.

The process of grinding or mixing amalgam alloy particles with mercury to achieve a workable consistency for placement.