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[Sorption and solution in autopolymerizing and light-cured composite materials].

W Kullmann

    Deutsche Zahnarztliche Zeitschrift
    |May 1, 1990
    PubMed
    Summary
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    Polymeric filling materials showed similar water sorption and solubility when stored in water, regardless of activation system. Surface hardness increased over time, and light source impacted polymerization.

    Area of Science:

    • Materials Science
    • Biomaterials Engineering
    • Polymer Chemistry

    Background:

    • Polymeric filling materials are crucial in restorative dentistry.
    • Understanding their behavior in aqueous environments is essential for clinical longevity.
    • Variations in activation systems and light sources can influence material properties.

    Purpose of the Study:

    • To investigate the sorption and solubility behavior of polymeric filling materials with similar components but different activation systems.
    • To assess changes in surface hardness over time.
    • To evaluate the effect of different light sources on the polymerization of photosensitive materials.

    Main Methods:

    • Storage of 12 different test and reference polymeric materials in water for 7 days.

    Related Experiment Videos

  • Measurement of water uptake and solubility.
  • Assessment of surface hardness.
  • Evaluation of polymerization using different light sources.

    • Main Results:

    • Polymeric materials exhibited similar sorption and solution behavior despite differing activation systems.
    • Water uptake ranged from 12.1 to 58.9 µg/mm³ after 7 days.
    • Solubility varied between 0.3 and 44.3 µg/mm³.
    • Surface hardness increased for all materials during the observation period.
    • The type of light source significantly affected the polymerization of photosensitive materials.

    Conclusions:

    • Activation system did not significantly alter sorption and solubility in water for similar polymeric materials.
    • All tested materials demonstrated increased surface hardness over time.
    • Light source selection is a critical factor influencing the polymerization efficacy of photosensitive dental materials.