RDAEF WRITTEN REVIEW Questions with Complete
Answers
The resin bonding agents from which type of bond to composite resin?
Chemical bond
Which of the following are classification of dental materials?
Preventative, Restorative, Theraputic
In general, __________ temperature and __________ humidity will accelerate the
reaction of materials.
High, high
What effects initial and final setting of dental material?
Moisture and pressure
What is an example of indirect restorative material?
Porcelain
Composite resin is an example of what type of restoration?
Direct restoration
Altering the set ratios of a material will do what?
Produce adverse results
Torque is a combination of which forces?
Compressive and tensile ( not shearing)
What does thermal expansion effect in dental materials?
Changes the volume and the length
What is it called when a dental material gives off heat?
Exothermic reaction
What is the cause of microleakage?
Poorly placed or sealed restorations, moisture control, expansion and contraction.
What is the term that best describes the thickness of thinness of a dental
material?
Viscosity
Adhesion is a method of what type of retention?
Chemical retention
What is the term that best describes the amount of time permitted to manipulate
materials in the mouth?
Working time
Merchant is also known as a ____________.
Conditioner
What type of acid is used during a bonding procedure?
Phosphoric acid
What appearance should be present after acid etching?
Chalky or frosty
The layer that interferes with the formation of a bond and thus should be removed
is called?
Smear layer
How long should dent in be etched?
10-20 second or manufacturers instructions
, After etching the dentinal surface is left _________
Moist
What does thermal expansion effect in dental materials?
Changes the volume and the length
The thin coating of insured resin found on the surface after polymerization is
called ____________
Oxygen inhibited layer
The process of which a material can be cured with light or cure chemically with
time is called__________________
Duel cured
Type of acid used when preparing a porcelain restoration is?
Hydrofluoric acid
When an endo treated tooth has inadequate tooth structure remaining to restore a
crown, what is needed first?
Post, buildup
Dental Bonding provides _____________
Adheasion
Etchant gel is typically what % of phosphoric acid?
37%
Desiccation after etching can cause _____________ (over dry)
Hypersensitivity
Contamination on the tooth during the placement of a restoration could effect
what?
Longevity
Identify two forms of contamination that can effect a restoration during
placement?
Saliva, and blood
Hypersensitivity may occur when what becomes irritated during restorative
procedures involving the chemicals associated with composite resin?
Odontoblasts (blasts -build; Clasts- kill)
an attribute that allows a material to tolerate the presence of moisture is called?
Hydrophilic
A bonding system that does NOT require a separate procedure is
_______________
Self etch system
The resin/dentin layer formed by the intermixing of dentin bonding agent and the
collagen fibrils is called ______________
Hybrid Layer
An attribute that does not allow a material to perform well in the presence of
moisture is called ___________
Hydrophobic
A bonding system that includes etchant of both dentin and enamel as a separate
step from the application of bonding is called ___________
Total etch system
What coupling agents join together the organic resin matrix and in organic silica
particles in a composite restoration?
Answers
The resin bonding agents from which type of bond to composite resin?
Chemical bond
Which of the following are classification of dental materials?
Preventative, Restorative, Theraputic
In general, __________ temperature and __________ humidity will accelerate the
reaction of materials.
High, high
What effects initial and final setting of dental material?
Moisture and pressure
What is an example of indirect restorative material?
Porcelain
Composite resin is an example of what type of restoration?
Direct restoration
Altering the set ratios of a material will do what?
Produce adverse results
Torque is a combination of which forces?
Compressive and tensile ( not shearing)
What does thermal expansion effect in dental materials?
Changes the volume and the length
What is it called when a dental material gives off heat?
Exothermic reaction
What is the cause of microleakage?
Poorly placed or sealed restorations, moisture control, expansion and contraction.
What is the term that best describes the thickness of thinness of a dental
material?
Viscosity
Adhesion is a method of what type of retention?
Chemical retention
What is the term that best describes the amount of time permitted to manipulate
materials in the mouth?
Working time
Merchant is also known as a ____________.
Conditioner
What type of acid is used during a bonding procedure?
Phosphoric acid
What appearance should be present after acid etching?
Chalky or frosty
The layer that interferes with the formation of a bond and thus should be removed
is called?
Smear layer
How long should dent in be etched?
10-20 second or manufacturers instructions
, After etching the dentinal surface is left _________
Moist
What does thermal expansion effect in dental materials?
Changes the volume and the length
The thin coating of insured resin found on the surface after polymerization is
called ____________
Oxygen inhibited layer
The process of which a material can be cured with light or cure chemically with
time is called__________________
Duel cured
Type of acid used when preparing a porcelain restoration is?
Hydrofluoric acid
When an endo treated tooth has inadequate tooth structure remaining to restore a
crown, what is needed first?
Post, buildup
Dental Bonding provides _____________
Adheasion
Etchant gel is typically what % of phosphoric acid?
37%
Desiccation after etching can cause _____________ (over dry)
Hypersensitivity
Contamination on the tooth during the placement of a restoration could effect
what?
Longevity
Identify two forms of contamination that can effect a restoration during
placement?
Saliva, and blood
Hypersensitivity may occur when what becomes irritated during restorative
procedures involving the chemicals associated with composite resin?
Odontoblasts (blasts -build; Clasts- kill)
an attribute that allows a material to tolerate the presence of moisture is called?
Hydrophilic
A bonding system that does NOT require a separate procedure is
_______________
Self etch system
The resin/dentin layer formed by the intermixing of dentin bonding agent and the
collagen fibrils is called ______________
Hybrid Layer
An attribute that does not allow a material to perform well in the presence of
moisture is called ___________
Hydrophobic
A bonding system that includes etchant of both dentin and enamel as a separate
step from the application of bonding is called ___________
Total etch system
What coupling agents join together the organic resin matrix and in organic silica
particles in a composite restoration?
