Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

New method evaluates coupling agents bonding polymer to tooth mineral.

W V Loebenstein, J W Kumpula

    Journal of Dental Research
    |October 1, 1977
    PubMed
    Summary

    This study shows that higher filler concentrations in Bis-GMA composites reduce tensile strength. Effective coupling agents minimize this strength reduction, aiding material classification and environmental impact assessment.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Durability of the bond between bone and various 2-cyanoacrylates in an aqueous environment.

    Journal of biomedical materials research·1979
    Same author

    Coupling agents for improved bonding of dental composites.

    Journal of dental research·1978
    Same author

    The surface area of aggregates applied to dental materials.

    Journal of biomedical materials research·1975
    Same author

    Adsorption of water on tooth components and related materials.

    Journal of dental research·1973
    Same author

    Heats of adsorption of ammonia and carbon dioxide on tooth components.

    Journal of dental research·1972
    Same author

    A filled cold-curing acrylic resin as a splinting material.

    Journal of the American Dental Association (1939)·1969

    Area of Science:

    • Materials Science
    • Polymer Chemistry
    • Biomaterials Engineering

    Background:

    • Bis-GMA resins are widely used in dental composites.
    • Synthetic hydroxyapatite is a common filler material.
    • Coupling agents are crucial for filler-matrix adhesion.

    Purpose of the Study:

    • To investigate the effect of filler concentration on the tensile strength of Bis-GMA/hydroxyapatite composites.
    • To evaluate the efficacy of different coupling agents in improving composite properties.
    • To propose a method for classifying coupling agents and assessing environmental degradation.

    Main Methods:

    • Polymerized test specimens were prepared using a Bis-GMA matrix and synthetic hydroxyapatite filler.
    • Filler particles were pre-coated with various coupling agents.
    • Tensile strength testing was performed on specimens with varying filler concentrations.

    Main Results:

    • Increasing filler concentration led to a decrease in tensile strength for all coupling agents.
    • More effective coupling agents resulted in a less significant decrease in tensile strength.
    • A correlation was observed between coupling agent effectiveness and the reduction in tensile strength.

    Conclusions:

    • Coupling agent effectiveness directly influences the mechanical integrity of Bis-GMA/hydroxyapatite composites.
    • The proposed method can classify coupling agents based on their performance.
    • This approach can assess the impact of environmental factors on composite weakening.

    Related Experiment Videos