Question 1

Stress is the amount of force exerted from within an object and ______ is the amount of change that the force has produced.

Accepted Answer

Strain is the measure of deformation representing the displacement between particles in the material body.

Question 2

The staining of resins and acrylics from repeated exposure to coffee, tea, and other dyed beverages is due to:

Accepted Answer

Water sorption allows resins and acrylics to absorb colored substances from beverages, leading to staining.

Question 3

Some dental materials may be therapeutic in small quantities or if in contact with tissues for a short period of time, but also may be irritating or toxic with longer or larger doses.

Accepted Answer

Some dental materials can indeed be therapeutic in small amounts or short-term exposure but may become irritating or toxic with prolonged or larger exposure.

Question 4

Excessive expansion of a restorative material may result in:

Accepted Answer

Excessive expansion of a restorative material can exert pressure on the surrounding tooth structure, potentially leading to the fracture of cusps.

Question 5

Percolation:

Accepted Answer

Percolation refers to the movement of fluids and bacteria into the gaps between a tooth and a restorative material, which can lead to issues like recurrent caries and pulpal irritation.

Question 6

Fatigue failure:

Accepted Answer

Fatigue failure occurs due to the growth of microscopic flaws over time, often under repeated stress or loading conditions.

Question 7

Which of the following restorative materials has a coefficient of thermal expansion and thermal conductivity closest to enamel?

Accepted Answer

The answer of Which of the following restorative materials has...

Question 8

Which of the following has been suggested to delay formation of surface tarnish on dental amalgams?

Accepted Answer

Polishing of amalgams to produce a smooth surface has been recommended to help delay the process of surface tarnish.Surface tarnish,discoloration due to oxidation of the metal's surface,can accelerate in crevices between a tooth and restoration and on rough surfaces.

Question 9

Which of the following would not be an adverse effect of a material?

Accepted Answer

Hyposensitivity refers to a reduced or absent sensitivity, which is not an adverse effect of a material. On the other hand, toxicity, hypersensitivity, and postoperative sensitivity are adverse effects of a material.

Question 10

The technique of chemical bonding rather than mechanical means to produce retention requires ______ removal of tooth structure and produces a _______ retentive force between tooth and restoration.

Accepted Answer

Chemical bonding requires less removal of tooth structure and produces a stronger retentive force between tooth and restoration.

Question 11

Which of the following materials has the highest ultimate compressive strength (lbs/in²)?

Accepted Answer

Amalgam has the highest ultimate compressive strength among the listed materials, making it suitable for dental restorations that require durability under high pressure.

Question 12

Which of the following is the best thermal conductor?

Accepted Answer

Gold is the best thermal conductor among the given options.

Question 13

Which of the following dental restorative materials is particularly susceptible to corrosion?

Accepted Answer

Dental amalgam is particularly susceptible to corrosion due to its metallic composition, which can react with substances in the oral environment.

Question 14

Normal masticatory forces on the occlusal surfaces of molar teeth can increase to as much as _________ pounds per square inch on a cusp tip.

Accepted Answer

Normal masticatory forces on the occlusal surfaces of molar teeth can increase to as much as 28,000 pounds per square inch on a cusp tip.

Question 15

_______________ refers to the intensity or strength of the color.

Accepted Answer

Chroma refers to the intensity or strength of the color. Hue refers to the actual color family (e.g. red, blue, green), value refers to the lightness or darkness of a color, and opacity refers to the degree to which something is transparent or opaque.

Question 16

__________ force is applied when two surfaces slide against each other or in a twisting or rotating motion.

Accepted Answer

Shearing force is applied when two surfaces slide against each other or in a twisting or rotating motion.

Question 17

Which of the following statements is true for the property of wetting as related to dental materials?

Accepted Answer

A thin film of dental cement is desirable to cement crowns because it ensures better adaptation and retention of the crown to the tooth structure, which is related to good wetting properties.

Question 18

Which of the following is considered to be the most reliable means of clinical assessment of composite and glass ionomer restorations?

Accepted Answer

Tactile evaluation of the tooth surface is considered the most reliable means of clinical assessment for composite and glass ionomer restorations, as it allows the clinician to directly feel the texture and integrity of the restoration.

Question 19

The normal resting pH of saliva ranges from 6.2 to __, which is neutral.

Accepted Answer

A pH of 7 is considered neutral, meaning equal amounts of acid and base. Therefore, the normal resting pH of saliva ranging from 6.2 to 7 is considered neutral. A pH of 1 is extremely acidic, and a pH of 14 is extremely basic. A pH of 6.6 is slightly acidic.

Question 20

Which of the following is true of galvanism?

Accepted Answer

Galvanic stimulation will decrease with time as oxides form on the surface of the metal.Galvanism is an electrical current transmitted between two dissimilar metals.An environment containing moisture,acidity,and dissimilar metals makes the generation of electrical current possible.The salts of the saliva facilitate the movement of electrical current from one type of metal to another.The current may result in stimulation to the pulp,called galvanic shock.

Quiz 2: Oral Environment and Patient Considerations

Stress is the amount of force exerted from within an object and ______ is the amount of change that the force has produced.

The staining of resins and acrylics from repeated exposure to coffee, tea, and other dyed beverages is due to:

Some dental materials may be therapeutic in small quantities or if in contact with tissues for a short period of time, but also may be irritating or toxic with longer or larger doses.

Excessive expansion of a restorative material may result in:

Percolation:

Fatigue failure:

Which of the following restorative materials has a coefficient of thermal expansion and thermal conductivity closest to enamel?

Which of the following has been suggested to delay formation of surface tarnish on dental amalgams?

Which of the following would not be an adverse effect of a material?

The technique of chemical bonding rather than mechanical means to produce retention requires removal of tooth structure and produces a _ retentive force between tooth and restoration.

Which of the following materials has the highest ultimate compressive strength (lbs/in²) ?

Which of the following is the best thermal conductor?

Which of the following dental restorative materials is particularly susceptible to corrosion?

Normal masticatory forces on the occlusal surfaces of molar teeth can increase to as much as _________ pounds per square inch on a cusp tip.

_______________ refers to the intensity or strength of the color.

__________ force is applied when two surfaces slide against each other or in a twisting or rotating motion.

Which of the following statements is true for the property of wetting as related to dental materials?

Which of the following is considered to be the most reliable means of clinical assessment of composite and glass ionomer restorations?

The normal resting pH of saliva ranges from 6.2 to __, which is neutral.

Which of the following is true of galvanism?

Quiz 2: Oral Environment and Patient Considerations

Stress is the amount of force exerted from within an object and ______ is the amount of change that the force has produced.

The staining of resins and acrylics from repeated exposure to coffee, tea, and other dyed beverages is due to:

Some dental materials may be therapeutic in small quantities or if in contact with tissues for a short period of time, but also may be irritating or toxic with longer or larger doses.

Excessive expansion of a restorative material may result in:

Percolation:

Fatigue failure:

Which of the following restorative materials has a coefficient of thermal expansion and thermal conductivity closest to enamel?

Which of the following has been suggested to delay formation of surface tarnish on dental amalgams?

Which of the following would not be an adverse effect of a material?

The technique of chemical bonding rather than mechanical means to produce retention requires ______ removal of tooth structure and produces a _______ retentive force between tooth and restoration.

Which of the following materials has the highest ultimate compressive strength (lbs/in2) ?

Which of the following is the best thermal conductor?

Which of the following dental restorative materials is particularly susceptible to corrosion?

Normal masticatory forces on the occlusal surfaces of molar teeth can increase to as much as _________ pounds per square inch on a cusp tip.

_______________ refers to the intensity or strength of the color.

__________ force is applied when two surfaces slide against each other or in a twisting or rotating motion.

Which of the following statements is true for the property of wetting as related to dental materials?

Which of the following is considered to be the most reliable means of clinical assessment of composite and glass ionomer restorations?

The normal resting pH of saliva ranges from 6.2 to __, which is neutral.

Which of the following is true of galvanism?

The technique of chemical bonding rather than mechanical means to produce retention requires removal of tooth structure and produces a _ retentive force between tooth and restoration.

Which of the following materials has the highest ultimate compressive strength (lbs/in²) ?