Chapters Restorative And Esthetic Dental Materials.
The demand for aesthetic in dentistry has created a variety of restorative materials meant for dental restoration. Ceramic restorations for instance are so natural looking and the dentists need to carefully evaluate what they observe in a patients mouth. Take up the quiz on chapters restorative and esthetic dental materials to learn more.
Questions and Answers
- 1.
One of the most common restorative materials in dentistry is composite.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Composite is indeed one of the most common restorative materials in dentistry. It is a tooth-colored resin material that is used to repair or restore teeth that have been damaged by decay, fractures, or other factors. Composite is preferred by many dentists and patients because it can be matched to the natural color of the teeth, making it aesthetically pleasing. It is also a versatile material that can be used for a variety of dental procedures, including fillings, bonding, and veneers. Overall, composite is widely used and considered a reliable and effective restorative material in dentistry.Rate this question:
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- 2.
Direct restorations include amalgam and gold crowns.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The given statement is false. Direct restorations include materials such as amalgam, composite resin, and glass ionomer cement, not gold crowns. Gold crowns are considered indirect restorations because they are fabricated outside of the mouth and then cemented onto the prepared tooth.Rate this question:
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- 3.
Composite resins are stronger than amalgam or gold.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Composite resins are not stronger than amalgam or gold. Amalgam, which is a mixture of metals, has been used for dental fillings for many years and is known for its strength and durability. Gold is also a popular choice for dental restorations due to its strength and biocompatibility. While composite resins have improved over the years and can offer good strength and aesthetics, they are generally not as strong as amalgam or gold. Therefore, the statement that composite resins are stronger than amalgam or gold is false.Rate this question:
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- 4.
Polymerization is the process in which the resin material is changed from a pliable state into a hardened restoration.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Polymerization is indeed the process where the resin material undergoes a chemical reaction to transform from a pliable state into a hardened restoration. This process is commonly used in various fields, including dentistry, where it is used to create dental fillings and other restorative materials. The resin material is typically placed in the desired shape and then exposed to a curing light or a chemical catalyst, which initiates the polymerization reaction, resulting in a hardened and durable restoration. Therefore, the statement "Polymerization is the process in which the resin material is changed from a pliable state into a hardened restoration" is true.Rate this question:
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- 5.
Macrofilled composites contain the smallest filler particles providing the least strength.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Macrofilled composites actually contain larger filler particles, which provide greater strength compared to composites with smaller filler particles. Therefore, the correct answer is False.Rate this question:
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- 6.
One reason temporary restorations are used is to maintain the function and esthetics of a tooth until a permanent restoration can be placed.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Temporary restorations are used to maintain the function and esthetics of a tooth until a permanent restoration can be placed. This is because the process of getting a permanent restoration, such as a crown or bridge, can take time. During this time, a temporary restoration is placed to protect the tooth and prevent any further damage. Temporary restorations also help to maintain the appearance of the tooth, ensuring that the patient can continue to eat, speak, and smile comfortably until the permanent restoration is ready to be placed. Therefore, the statement is true.Rate this question:
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- 7.
Common uses of Intermediate Restorative Material include restorative emergencies and restoration of primary teeth.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Intermediate Restorative Material (IRM) is a dental material that is commonly used in restorative emergencies, such as when a temporary filling is needed. It is also used for the restoration of primary teeth, which are the first set of teeth that children have before their permanent teeth come in. Therefore, the statement that common uses of Intermediate Restorative Material include restorative emergencies and restoration of primary teeth is true.Rate this question:
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- 8.
Indirect restorations materials include gold alloys and ceramic materials.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Indirect restorations are dental restorations that are fabricated outside of the mouth and then bonded to the tooth. These restorations are typically made from materials such as gold alloys and ceramics, which are known for their strength, durability, and aesthetics. Therefore, the statement that indirect restorations materials include gold alloys and ceramic materials is true.Rate this question:
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- 9.
Porcelain material is chosen as a restorative material because the shading matches tooth color well.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Porcelain material is chosen as a restorative material because it has the ability to closely match the color of natural teeth. This makes it an ideal choice for dental restorations as it provides a seamless and natural appearance. Its shade-matching properties allow for a more aesthetically pleasing result, enhancing the overall appearance of the teeth and smile.Rate this question:
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- 10.
For longer than 150 years, billions of dental amalgam fillings has been used to restore decayed teeth.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Dental amalgam fillings have indeed been used for more than 150 years to restore decayed teeth. This statement implies that the use of dental amalgam fillings has been a long-standing and widely accepted practice in dentistry.Rate this question:
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- 11.
The types of supplemental materials selected by the dentist will determine how the tooth will be prepared.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because the types of supplemental materials chosen by the dentist will have a direct impact on how the tooth is prepared. Different materials may require different preparation techniques or tools, and the dentist will need to consider factors such as the strength, durability, and aesthetics of the materials when making their selection. Therefore, the choice of supplemental materials is crucial in determining the preparation process for the tooth.Rate this question:
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- 12.
Calcium hydroxide is NOT a bonding material.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Calcium hydroxide, also known as slaked lime, is not a bonding material because it does not form strong chemical bonds with other substances. It is commonly used in various applications such as in the production of cement, as a pH regulator in water treatment, and as a chemical reagent. However, it does not possess the adhesive properties required to bond materials together.Rate this question:
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- 13.
The application of a varnish helps to seal the dentinal tubules.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The application of varnish helps to seal the dentinal tubules, which are tiny channels in the teeth that connect the inner pulp to the outer surface. When these tubules are not sealed, they can allow bacteria and other substances to penetrate the tooth, leading to tooth decay and sensitivity. By sealing the tubules with varnish, it creates a protective barrier and reduces the risk of dental problems.Rate this question:
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- 14.
Dental bases are used to provide pulpal protection in the following ways: Protective bases, insulating bases, and sedative bases.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Dental bases are indeed used to provide pulpal protection in various ways. Protective bases are used to provide a barrier between the tooth pulp and restorative materials, preventing irritation and sensitivity. Insulating bases are used to protect the pulp from temperature changes during dental procedures. Sedative bases contain materials that have a soothing effect on the pulp, reducing pain and inflammation. Therefore, the statement that dental bases are used to provide pulpal protection in different ways is true.Rate this question:
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- 15.
With the use of bonding materials, it is now possible to bond restorative materials to enamel and dentin.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Bonding materials have revolutionized the field of dentistry by allowing restorative materials to be securely bonded to enamel and dentin. This enables dentists to provide stronger and more durable dental restorations, such as fillings and crowns. The bonding process involves applying a bonding agent to the tooth surface, which creates a strong bond between the restorative material and the tooth structure. This not only improves the longevity of the restoration but also helps to prevent further damage or decay. Therefore, the statement is true.Rate this question:
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- 16.
Acid etching is a technique in which acid is placed on either the enamel or gingiva to remove the smear layer in preparation for bonding.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Acid etching is placed on ENAMEL and DENTIN not on the gingiva.Rate this question:
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- 17.
An example of enamel bonding is a sealant or orthodontic bracket.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Enamel bonding refers to the process of attaching a material to the surface of the tooth enamel. In this case, a sealant or orthodontic bracket is used to bond to the enamel. This helps to protect the tooth from decay or to hold orthodontic appliances in place. Therefore, the statement that "An example of enamel bonding is a sealant or orthodontic bracket" is true.Rate this question:
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- 18.
The mixing time for dental cements is the same no matter which materials you are using.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The mixing time for dental cements is not the same for all materials. Different materials may have different properties and require different mixing times to achieve the desired consistency.Rate this question:
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- 19.
Glass ionomer cement MUST be mixed on a cool glass slab.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Glass ionomer cement does not necessarily have to be mixed on a cool glass slab. While it is recommended to mix the cement on a cool surface to slow down the setting time and allow for better manipulation, it can also be mixed on a paper pad or a mixing pad specifically designed for glass ionomer cement. Therefore, the statement that it "MUST" be mixed on a cool glass slab is false.Rate this question:
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- 20.
A porcelain casting is chosen over other castings because it
- A.
Has higher strength.
- B.
Has the ability to match natural tooth structure.
- C.
Is a good insulator.
- D.
All of the above.
Correct Answer
D. All of the above.Explanation
The correct answer is "all of the above" because a porcelain casting has higher strength, the ability to match natural tooth structure, and is a good insulator. Porcelain is known for its durability and strength, making it a suitable material for dental castings. Additionally, porcelain can be color-matched to the natural tooth structure, providing a more natural appearance. Moreover, porcelain is a good insulator, which is important for protecting the tooth from temperature changes and sensitivity. Therefore, all of these reasons make porcelain casting a preferred choice over other castings.Rate this question:
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- 21.
________ occurs when a metal restoration is touched by a fork.
- A.
Microleakage
- B.
Galvanic action
- C.
Sheer stress
- D.
Corrosion
Correct Answer
B. Galvanic actionExplanation
Galvanic action occurs when a metal restoration is touched by a fork. Galvanic action refers to the electrochemical process that takes place when two dissimilar metals come into contact with each other in the presence of an electrolyte, such as saliva. This can lead to the generation of a small electrical current, causing the metal restoration to corrode or deteriorate over time. In this case, the contact between the metal restoration and the fork creates a galvanic couple, resulting in galvanic action.Rate this question:
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- 22.
A properly triturated amalgam mix should:
- A.
Be a hard mass.
- B.
Contain dry particles.
- C.
Be a soft, pliable mass.
- D.
Separate when packed.
Correct Answer
C. Be a soft, pliable mass.Explanation
A properly triturated amalgam mix should be a soft, pliable mass because this consistency allows for easy manipulation and placement in the tooth cavity. If the mix is too hard, it may be difficult to pack and shape properly. Dry particles can indicate inadequate mixing or insufficient use of the liquid component, which can affect the properties and performance of the amalgam. Separation when packed would indicate poor cohesion and can compromise the integrity of the restoration. Therefore, a soft, pliable mass is the ideal consistency for a properly triturated amalgam mix.Rate this question:
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- 23.
A difference in the cavity preparation of amalgam versus composite is:
- A.
More retention is cut into the prep for composite.
- B.
Amalgam requires the use of a bonding system.
- C.
Composites are more compatible with most dental materials used for bases.
- D.
Composites require the use of a bonding system.
Correct Answer
D. Composites require the use of a bonding system.Explanation
Composites require the use of a bonding system because they are a type of dental material that bonds to the tooth structure. This bonding system helps to create a strong and durable bond between the composite material and the tooth, ensuring that the restoration stays in place. In contrast, amalgam does not require a bonding system as it relies on mechanical retention to stay in the tooth preparation. The use of a bonding system with composites also allows for better aesthetics, as it helps to create a seamless blend between the restoration and the natural tooth.Rate this question:
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- 24.
A liquid with high viscosity _____ flow easily and _____ effective in wetting a surface.
- A.
Does; is
- B.
Does; is not
- C.
Does not; is
- D.
Does not; is not
Correct Answer
D. Does not; is notExplanation
A liquid with high viscosity does not flow easily and is not effective in wetting a surface./div /divRate this question:
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- 25.
Glass ionomer can be used for class _____ restorations.
- A.
II
- B.
III
- C.
IV
- D.
V
Correct Answer
D. VExplanation
Glass ionomer can be used for class V restorations. Class V restorations refer to cavities or defects on the smooth surfaces of the teeth, typically located at the gum line or on the root surface. Glass ionomer is a dental material that is known for its ability to bond to tooth structure and release fluoride, making it suitable for use in areas with high risk of decay. Class V restorations often require a material that can provide good adhesion to the tooth surface and withstand the forces of chewing, which glass ionomer can provide.Rate this question:
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- 26.
Ideally, composite resin shades should be chosen in:
- A.
Daylight.
- B.
Normal ambient light.
- C.
Bright light.
- D.
Operatory light.
Correct Answer
A. Daylight.Explanation
Composite resin shades should ideally be chosen in daylight because natural daylight provides the most accurate representation of the true colors. Different light sources can affect the perception of color, and daylight is considered the standard reference for color matching. It provides a balanced spectrum of light that allows for better evaluation of shade selection and ensures the most accurate and aesthetic results.Rate this question:
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- 27.
_____ is the process by which the resin material is changed from a pliable state into a hardened restoration.
- A.
Trituration
- B.
Retention
- C.
Polymerization
- D.
Galvanism
Correct Answer
C. PolymerizationExplanation
Polymerization is the process by which the resin material is changed from a pliable state into a hardened restoration. During polymerization, the resin undergoes a chemical reaction that causes it to cross-link and form a solid structure. This process is essential in dentistry for creating durable and long-lasting dental restorations such as fillings, crowns, and dentures. The resin material is typically applied to the tooth in a pliable state and then exposed to a curing light or chemical catalyst, which initiates the polymerization process and transforms the material into a hardened state.Rate this question:
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- 28.
_____ is added to dental amalgam alloy powder to suppress oxidation.
- A.
Silver
- B.
Tin
- C.
Copper
- D.
Zinc
Correct Answer
D. ZincExplanation
Zinc is added to dental amalgam alloy powder to suppress oxidation. Zinc acts as a sacrificial metal, meaning it readily oxidizes itself instead of the other metals in the amalgam, such as silver and tin. This helps to prevent the oxidation of the other metals, ensuring the longevity and stability of the dental amalgam.Rate this question:
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- 29.
The addition of _______ alloy to glass ionomers produces a product that can be used for core buildups and the repair of fractured cusps and amalgam fillings as well as abutments for overdentures.
- A.
Copper
- B.
Silver-tin
- C.
Gold
- D.
Zinc
Correct Answer
B. Silver-tinExplanation
The addition of silver-tin alloy to glass ionomers produce a product that can be used for core buildups and the repair of fractured cusps and amalgam fillings, as well as abutments for overdentures./div /divRate this question:
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- 30.
The curing process in which it is the most critical that the materials are mixed and placed within the working and setting times is with ________ materials.
- A.
Auto-cured
- B.
Light-cured
- C.
Dual-cured
- D.
None is more critical than another.
Correct Answer
A. Auto-curedExplanation
In the curing process, the most critical aspect is ensuring that the materials are mixed and placed within the working and setting times. This is particularly important for auto-cured materials because they do not rely on external factors such as light or additional curing agents to initiate the curing process. Therefore, if the materials are not mixed and placed within the specified time frame, the curing process may not occur properly, leading to compromised results.Rate this question:
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- 31.
New dental materials must undergo strict evaluation by _____ before they can be marketed.
- A.
FDA
- B.
ADA
- C.
MDA
- D.
ADAA
Correct Answer
B. ADAExplanation
New dental materials must undergo strict evaluation by ADA before they can be marketed. The ADA, or American Dental Association, is a professional organization that sets standards and guidelines for dental products and procedures. Their evaluation ensures that the dental materials meet the necessary safety and efficacy requirements before they are made available to the public.Rate this question:
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- 32.
The dental restorations created in the laboratory by the dental laboratory technician are classified as:
- A.
Direct restorations.
- B.
Indirect restorations.
- C.
Provisional restorations.
- D.
Amalgams
Correct Answer
B. Indirect restorations.Explanation
The dental restorations created in the laboratory by the dental laboratory technician are classified as indirect restorations. This means that they are not directly placed in the patient's mouth, but rather fabricated outside of the mouth and then later cemented or bonded in place by the dentist. Examples of indirect restorations include crowns, bridges, inlays, and onlays. These restorations are typically made from materials such as porcelain or metal alloys and are custom-made to fit the patient's specific needs.Rate this question:
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- 33.
The resin matrix component of composite is dimethacrylate, a fluid-like material also referred to as:
- A.
Quartz.
- B.
Silica.
- C.
IRM.
- D.
BIS-GMA.
Correct Answer
D. BIS-GMA.Explanation
The resin matrix component of composite is dimethacrylate, a fluid-like material also referred to as BIS-GMA.Rate this question:
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- 34.
The term ‘restorative’ describes the ability to:
- A.
Remove disease.
- B.
Restore function.
- C.
Be esthetic.
- D.
Both a and b.
Correct Answer
D. Both a and b.Explanation
The term 'restorative' refers to the ability to both remove disease and restore function. It encompasses the ability to eliminate or treat diseases or conditions, as well as the ability to restore the normal function or structure of something. In the context of this question, the term 'restorative' encompasses both aspects, making the correct answer 'both a and b'.Rate this question:
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- 35.
The type of ceramic most often used in dentistry for castings is:
- A.
Composite resin.
- B.
Glass ionomer.
- C.
Zinc oxide-eugenol cement.
- D.
Porcelain.
Correct Answer
D. Porcelain.Explanation
Porcelain is the most commonly used ceramic in dentistry for castings. It is a durable and aesthetically pleasing material that can be matched to the natural color of teeth. Porcelain is used for dental crowns, bridges, and veneers due to its strength and ability to withstand biting forces. It is also biocompatible, meaning it is well-tolerated by the body and does not cause any adverse reactions. Overall, porcelain is the preferred ceramic material for dental restorations due to its durability, aesthetics, and biocompatibility.Rate this question:
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- 36.
Which is not true of nonmercury alloys?
- A.
They are not sensitive to moisture.
- B.
They are placed after a resin liner.
- C.
They require the application of a sealant over the restoration.
- D.
All of these are true.
Correct Answer
A. They are not sensitive to moisture.Explanation
Nonmercury alloys are sensitive to moisture. This means that they can corrode or degrade when exposed to moisture, which can lead to damage or failure of the restoration. Therefore, the statement "They are not sensitive to moisture" is not true for nonmercury alloys.Rate this question:
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- 37.
Which of the following are advantages to using glass ionomer as a restorative material?
- A.
Glass ionomer has the ability to bind to teeth mechanically, rather than chemically.
- B.
Glass ionomer releases fluoride after their final setting.
- C.
Loss of gloss indicates a proper mix of glass ionomer material.
- D.
There is no need to avoid contact with water during the mixing procedure for glass ionomer.
Correct Answer
B. Glass ionomer releases fluoride after their final setting.Explanation
Glass ionomer is advantageous as a restorative material because it releases fluoride after it has fully set. This helps to prevent tooth decay and provides additional protection to the surrounding teeth. The ability to release fluoride is a unique characteristic of glass ionomer that sets it apart from other restorative materials.Rate this question:
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- 38.
Which will not influence the curing time of composite restorations?
- A.
Manufacturer’s instructions
- B.
The base used
- C.
Thickness or size of restoration
- D.
The shade of the restoration
Correct Answer
B. The base usedExplanation
The base used will not influence the curing time of composite restorations. The curing time of composite restorations is primarily determined by the type of composite material used and the curing light intensity. The base used, which is a layer of material placed underneath the composite restoration, does not directly affect the curing time. However, the base can indirectly affect the overall success and longevity of the restoration by providing support and insulation.Rate this question:
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- 39.
Varnish should be placed on the ______ of the preparation.
- A.
Walls
- B.
Floor
- C.
Margins
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
Varnish should be placed on all of the above surfaces, including walls, floor, and margins of the preparation. This is because varnish is commonly used to protect and enhance the appearance of various surfaces, including walls, floors, and the edges or margins of any prepared or finished area. Applying varnish to all of these surfaces helps to provide a uniform and consistent protective coating, ensuring the longevity and aesthetics of the entire space.Rate this question:
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- 40.
Etching for dental bonding is done with:
- A.
Phosphoric acid.
- B.
Ammonia.
- C.
Isopropyl alcohol.
- D.
Hydrogen peroxide.
Correct Answer
A. Phosphoric acid.Explanation
Etching for dental bonding is done with phosphoric acid. Phosphoric acid is commonly used in dentistry as an etching agent to prepare the tooth surface for bonding procedures. It helps create a rough surface on the tooth enamel, allowing for better adhesion of the bonding material. Ammonia, isopropyl alcohol, and hydrogen peroxide are not typically used for etching in dental bonding procedures.Rate this question:
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- 41.
A dental liner is placed:
- A.
Along inside of cavity walls.
- B.
Mesial and distal of the tooth.
- C.
In the deepest area of the tooth preparation.
- D.
Along the interproximal margin.
Correct Answer
C. In the deepest area of the tooth preparation.Explanation
A dental liner is placed in the deepest area of the tooth preparation to provide a protective barrier between the tooth and the restorative material. This helps to prevent sensitivity and irritation to the pulp of the tooth. Additionally, placing the liner in the deepest area ensures that it covers the entire prepared surface, providing an even layer of protection.Rate this question:
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- 42.
Calcium hydroxide:
- A.
Cannot be placed under direct composite resins because it will inhibit polymerization.
- B.
Stimulates the production of reparative dentin.
- C.
Functions as a thick base to support extensive restorations.
- D.
Consists of a resin in an organic solvent.
Correct Answer
B. Stimulates the production of reparative dentin.Explanation
Calcium hydroxide stimulates the production of reparative dentin. This means that when calcium hydroxide is applied to a tooth, it promotes the formation of new dentin, which is the hard tissue that makes up the bulk of a tooth. This can be beneficial in situations where there is damage or decay in the tooth, as it helps to repair and strengthen the tooth structure. It is important to note that calcium hydroxide should not be placed under direct composite resins because it can inhibit the polymerization process.Rate this question:
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- 43.
A desensitizer could be indicated for which of the following procedures?
- A.
Amalgam
- B.
Sealants
- C.
Provisional coverage
- D.
Fluoride
Correct Answer
A. AmalgamExplanation
A desensitizer could be indicated for an amalgam procedure. Desensitizers are used to reduce sensitivity and discomfort during dental procedures. Amalgam fillings can sometimes cause sensitivity, especially if they are deep or close to the nerve. Therefore, a desensitizer may be applied before placing the amalgam filling to minimize any potential discomfort for the patient.Rate this question:
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- 44.
Bonding agents or adhesives:
- A.
Can be light-cured.
- B.
Must be used after etching.
- C.
Are available as self-cured.
- D.
All of the above.
Correct Answer
D. All of the above.Explanation
The correct answer is "all of the above" because bonding agents or adhesives can be light-cured, meaning they can be cured using a light source. They must also be used after etching, as etching helps create a rough surface for the adhesive to bond to. Additionally, bonding agents or adhesives are available as self-cured, meaning they can cure on their own without the need for a light source. Therefore, all of these statements are true.Rate this question:
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- 45.
Insulating base material should cover the entire _______ to a thickness of _____ mm.
- A.
Cavity preparation; 1-2
- B.
Pulpal floor; 1-2
- C.
Cavity preparation; 2-3
- D.
Pulpal floor; 3-4
Correct Answer
B. Pulpal floor; 1-2Explanation
The insulating base material should cover the entire pulpal floor to a thickness of 1-2 mm. This is important because the pulpal floor is the area closest to the pulp chamber, which contains the dental pulp. By covering the pulpal floor with an insulating base material, it helps to protect the pulp from irritation and thermal changes caused by restorative materials or procedures. This thickness range of 1-2 mm ensures adequate insulation and protection for the pulp while still allowing for proper placement and adaptation of the restorative material.Rate this question:
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- 46.
Calcium hydroxide liner is a frequently used liner because it:
- A.
Stimulates production of secondary dentin.
- B.
Can be used with only composite resin material.
- C.
Acts as a base as well as a liner.
- D.
Does not require the use of a filling material.
Correct Answer
A. Stimulates production of secondary dentin.Explanation
Calcium hydroxide liner is frequently used in dentistry because it stimulates the production of secondary dentin. Secondary dentin is a protective layer that forms in response to tooth decay or trauma, helping to protect the underlying dentin and pulp. Calcium hydroxide stimulates the odontoblasts, cells responsible for dentin formation, to produce this secondary dentin. This helps to strengthen the tooth and prevent further damage.Rate this question:
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- 47.
Dental bonding is also referred to as a:
- A.
Dental adhesion.
- B.
Dental liner.
- C.
Desensitizer.
- D.
None of the above.
Correct Answer
A. Dental adhesion.Explanation
Dental bonding is a procedure in which a tooth-colored resin material is applied to the tooth and then hardened with a special light, bonding it to the tooth. This process is also known as dental adhesion because it involves the adhesion or bonding of the resin material to the tooth surface. Dental bonding is commonly used to repair chipped or cracked teeth, improve the appearance of discolored teeth, and close gaps between teeth. It is a popular and effective cosmetic dental treatment.Rate this question:
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- 48.
Etchant removes the _____ layer in preparation for bonding.
- A.
Varnish
- B.
Cavity liner
- C.
Smear
- D.
Sclerosing
Correct Answer
C. SmearExplanation
The correct answer is "smear". Etchant is used to remove the smear layer, which is a thin layer of debris and organic material that forms on the surface of a tooth during dental procedures. Removing the smear layer is important in order to create a clean and optimal surface for bonding procedures.Rate this question:
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- 49.
If a varnish is used, it is always used before other materials.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement contradicts itself. It states that if a varnish is used, it is always used before other materials. However, the correct answer is False, implying that there are cases where varnish is not used before other materials. Therefore, the statement is inconsistent and cannot be true.Rate this question:
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- 50.
Which of the following materials used as a base needs to set at least 5 minutes before placing the restoration?
- A.
Polycarboxylate cement
- B.
ZOE
- C.
Zinc phosphate cement
- D.
Desensitizing materials
Correct Answer
A. Polycarboxylate cementExplanation
Polycarboxylate cement is the correct answer because it requires at least 5 minutes to set before placing the restoration. This type of cement is commonly used in dentistry for its adhesive properties and ability to bond to both enamel and dentin. The setting time allows the cement to harden and create a strong bond with the restoration, ensuring its stability and longevity.Rate this question:
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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
Jan 09, 2013Quiz Created by
Maurita