Are you a Composite Degradation Expert?
18 Questions
3 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which composite had the highest susceptibility to degradation by cholesterol esterase?

  • TPH XL (correct)
  • Z250
  • BIS-GMA
  • Z100

    • Which composite system contains urethane-modified Bis-GMA in addition to other compositions?

  • BIS-GMA
  • Z250
  • TPH XL (correct)
  • Z100

    • Which composite attracted a greater amount of water due to the larger quantity of TEGDMA in its formulation?

  • Z250
  • Z100
  • BIS-GMA (correct)
  • TPH XL

    • What is an indirect restorative material?

    <p>A ceramic, metal, metal-ceramic, or resin-based composite used extraorally to produce prostheses that replace missing teeth, enhance esthetics, and/or restore damaged teeth.</p> Signup and view all the answers

    What is an auxiliary dental material?

    <p>A substance used in the construction of a dental prosthesis but does not become a part of the structure.</p> Signup and view all the answers

    What is a direct restorative material?

    <p>A cement, metal, or resin-based composite placed intraorally to restore teeth and/or enhance esthetics.</p> Signup and view all the answers

    What is a preventive dental material?

    <p>A cement, coating, or restorative material that seals pits and fissures or releases therapeutic agents like fluoride and/or mineralizing ions to prevent or arrest the demineralization of tooth structure.</p> Signup and view all the answers

    What is the purpose of a direct restorative material?

    <p>To restore teeth and/or enhance esthetics.</p> Signup and view all the answers

    What is the difference between an auxiliary dental material and a direct restorative material?

    <p>An auxiliary dental material is used in the construction of a dental prosthesis but does not become a part of the structure, while a direct restorative material is placed intraorally to restore teeth and enhance esthetics.</p> Signup and view all the answers

    What types of materials are used as indirect restorative materials?

    <p>Ceramic, metal, metal-ceramic, and resin-based composites are used as indirect restorative materials.</p> Signup and view all the answers

    What is the purpose of a preventive dental material?

    <p>The purpose of a preventive dental material is to seal pits and fissures or release therapeutic agents such as fluoride and mineralizing ions to prevent or arrest the demineralization of tooth structure.</p> Signup and view all the answers

    What is the composition of a direct restorative material?

    <p>A direct restorative material can be a cement, metal, or resin-based composite.</p> Signup and view all the answers

    What are the uses of an indirect restorative material?

    <p>An indirect restorative material is used to produce prostheses that replace missing teeth, enhance esthetics, and restore damaged teeth.</p> Signup and view all the answers

    Which type of dental material is used extraorally to produce prostheses that replace missing teeth?

    <p>Indirect restorative material</p> Signup and view all the answers

    What is the purpose of a direct restorative material?

    <p>To restore teeth and enhance esthetics</p> Signup and view all the answers

    Which type of dental material becomes a part of the dental prosthesis structure?

    <p>Auxiliary dental material</p> Signup and view all the answers

    What is the main function of a preventive dental material?

    <p>To prevent or arrest demineralization of tooth structure</p> Signup and view all the answers

    Which type of dental material is placed and formed intraorally to restore teeth and enhance esthetics?

    <p>Direct restorative material</p> Signup and view all the answers

    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.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    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.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser