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Questions and Answers
Which composite had the highest susceptibility to degradation by cholesterol esterase?
Which composite system contains urethane-modified Bis-GMA in addition to other compositions?
Which composite attracted a greater amount of water due to the larger quantity of TEGDMA in its formulation?
What is an indirect restorative material?
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What is an auxiliary dental material?
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What is a direct restorative material?
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What is a preventive dental material?
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What is the purpose of a direct restorative material?
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What is the difference between an auxiliary dental material and a direct restorative material?
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What types of materials are used as indirect restorative materials?
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What is the purpose of a preventive dental material?
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What is the composition of a direct restorative material?
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What are the uses of an indirect restorative material?
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Which type of dental material is used extraorally to produce prostheses that replace missing teeth?
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What is the purpose of a direct restorative material?
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Which type of dental material becomes a part of the dental prosthesis structure?
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What is the main function of a preventive dental material?
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Which type of dental material is placed and formed intraorally to restore teeth and enhance esthetics?
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Study Notes
Composite Materials
- Composite with the highest susceptibility to degradation by cholesterol esterase not specified, but various studies suggest certain formulations are more prone.
- Urethane-modified Bis-GMA is included in specific composite systems, enhancing mechanical properties and reducing brittleness.
- Composites containing larger quantities of TEGDMA in their formulation attract more water, impacting their physical properties.
Types of Dental Materials
- Indirect Restorative Material: Used to create restorations that are fabricated outside the mouth; includes crowns, bridges, and veneers.
- Auxiliary Dental Material: Supports the dental care process, not used as primary restoratives; examples include impression materials and cements.
- Direct Restorative Material: Applied within the mouth to restore or fill teeth; examples are dental amalgams and composite resins.
- Preventive Dental Material: Aimed to prevent dental issues; includes sealants and fluoride treatments.
Purposes of Dental Materials
- Direct Restorative Material: Restores teeth function and aesthetics while providing immediate form and shape in situ.
- Preventive Dental Material: Designed to protect teeth from decay and other dental concerns, enhancing oral health.
- Indirect Restorative Material Uses: Fabricated for long-term replacements, improving functionality and appearance of affected teeth.
Composition and Application
- Composition of Direct Restorative Material: Typically made of resins, glass ionomer, or composite formulations providing durability and aesthetic benefits.
- Dental Materials for Prostheses: Indirect restorative materials are crafted extraorally to replace missing teeth and restore dental function.
- Materials that become part of the dental prosthesis structure include metals, ceramics, and composite materials, providing structural integrity.
Functions and Applications
- Main function of preventive dental material is to safeguard against dental caries and reinforce oral hygiene practices.
- Direct restorative materials are placed and shaped within the mouth to restore teeth while improving their aesthetics, providing immediate functionality.
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Description
Test your knowledge on composite degradation and hydrolysis with this quiz! Learn about the effects of cholesterol esterase on resin composites Z250 and Z100, the hydrophobic properties of uBis-GMA compared to Bis MA, and how the quantity of Bis-GMA can affect water absorption in composites. See how well you understand the science behind traditional Bis-GMA composites and their susceptibility to water damage.
