MDA Chapter 43 Restorative and
Esthetic Dental Materials
_________ materials are applied to the tooth while the materials is pliable and can be carved and finish.
- ANSWER-Restorative
__________ is any push or pull on matter. - ANSWER-Force
__________ is the change produced within the material that occurs as the result of stress - ANSWER-
Strain
__________ is the reaction within the material that can cause distortion. - ANSWER-Stress
2 Types of Direct Restorative Materials - ANSWER-Amalgam
Composites
A change in temperature in the oral cavity results from a hot or cold product. - ANSWER-Thermal
Changes
A fluid like material called dimethacrylate also referred to as BiS-GMA. - ANSWER-Resin Matrix
A material that is light proof/individual units, will not polymerize until it is exposed to light and a kit will
vary shades. - ANSWER-Composite
A setting process of a dental material is initiated by what 2 actions. - ANSWER-Curing
Amalgam Hygiene Guidelines - ANSWER-Avoid mercury to come in contact with your skin.
Protect against spillage during trituration.
Keep the lid closed during trituration.
Do not discard amalgam in trash.
Collect and store scrap amalgam in a labeled hazardous waste container.
Container should be a closed container.
Amalgam supplied in pre-measured capsules - ANSWER-1 spill= 400mg
2 spill=600mg
3 spill=800mg
American Dental Association criteria for the standardization of new dental materials - ANSWER-Must
not be poisonous or harmful to the body
Must not be harmful or irritating to the tissues of the oral cavity
Must help protect the tooth and oral tissues of the oral cavity
Must resemble the natural dentition
Must be easily formed and placed in the mouth
, MDA Chapter 43 Restorative and
Esthetic Dental Materials
Must conform to function
An electrical current in the oral cavity can take place when there are 2 different metal is present. -
ANSWER-Galvanic Action
Breakdown of the material from lateral force. - ANSWER-Shear stress
Can amalgam be used in anterior teeth? - ANSWER-Yes it can when esthetic is not a factor.
Changes in temperature can cause a dental material to pull away from the tooth, causing: - ANSWER-
Microleakage
Faulty restoration
Characteristics of dental materials that can affect the adhesion process are: - ANSWER-Wetting
Viscosity
Film thickness
Composition of Amalgam - ANSWER-Mercury 43-54%
Alloy powder 57-46%
Silver, tin, copper and zinc
Composition of composites that gives and match the color of the tooth. Most often the color comes
from inorganic substance. - ANSWER-Pigments
Composition of composites which strengthens the resins by chemically bonding the filler to the resin
matrix. - ANSWER-Coupling agent
Compositions of composite resins - ANSWER-Organic resin matrix
Inorganic fillers
Coupling agent
Pigments
Contraindications for using composite resins - ANSWER-Esthetic is not a factor
Poor POH
Cost is the significant factor in treatment decision.
Curing takes place as the material is mixed and the final cure does not occur until the material has been
exposed to a curing light. - ANSWER-Dual cured
Curing time depends on - ANSWER-Manufacturers instructions
Thickness and size of the restoration
Esthetic Dental Materials
_________ materials are applied to the tooth while the materials is pliable and can be carved and finish.
- ANSWER-Restorative
__________ is any push or pull on matter. - ANSWER-Force
__________ is the change produced within the material that occurs as the result of stress - ANSWER-
Strain
__________ is the reaction within the material that can cause distortion. - ANSWER-Stress
2 Types of Direct Restorative Materials - ANSWER-Amalgam
Composites
A change in temperature in the oral cavity results from a hot or cold product. - ANSWER-Thermal
Changes
A fluid like material called dimethacrylate also referred to as BiS-GMA. - ANSWER-Resin Matrix
A material that is light proof/individual units, will not polymerize until it is exposed to light and a kit will
vary shades. - ANSWER-Composite
A setting process of a dental material is initiated by what 2 actions. - ANSWER-Curing
Amalgam Hygiene Guidelines - ANSWER-Avoid mercury to come in contact with your skin.
Protect against spillage during trituration.
Keep the lid closed during trituration.
Do not discard amalgam in trash.
Collect and store scrap amalgam in a labeled hazardous waste container.
Container should be a closed container.
Amalgam supplied in pre-measured capsules - ANSWER-1 spill= 400mg
2 spill=600mg
3 spill=800mg
American Dental Association criteria for the standardization of new dental materials - ANSWER-Must
not be poisonous or harmful to the body
Must not be harmful or irritating to the tissues of the oral cavity
Must help protect the tooth and oral tissues of the oral cavity
Must resemble the natural dentition
Must be easily formed and placed in the mouth
, MDA Chapter 43 Restorative and
Esthetic Dental Materials
Must conform to function
An electrical current in the oral cavity can take place when there are 2 different metal is present. -
ANSWER-Galvanic Action
Breakdown of the material from lateral force. - ANSWER-Shear stress
Can amalgam be used in anterior teeth? - ANSWER-Yes it can when esthetic is not a factor.
Changes in temperature can cause a dental material to pull away from the tooth, causing: - ANSWER-
Microleakage
Faulty restoration
Characteristics of dental materials that can affect the adhesion process are: - ANSWER-Wetting
Viscosity
Film thickness
Composition of Amalgam - ANSWER-Mercury 43-54%
Alloy powder 57-46%
Silver, tin, copper and zinc
Composition of composites that gives and match the color of the tooth. Most often the color comes
from inorganic substance. - ANSWER-Pigments
Composition of composites which strengthens the resins by chemically bonding the filler to the resin
matrix. - ANSWER-Coupling agent
Compositions of composite resins - ANSWER-Organic resin matrix
Inorganic fillers
Coupling agent
Pigments
Contraindications for using composite resins - ANSWER-Esthetic is not a factor
Poor POH
Cost is the significant factor in treatment decision.
Curing takes place as the material is mixed and the final cure does not occur until the material has been
exposed to a curing light. - ANSWER-Dual cured
Curing time depends on - ANSWER-Manufacturers instructions
Thickness and size of the restoration
