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Related Experiment Videos

Cure behaviour of visible light-activated pattern materials.

J M Whitworth1, S H Makhani, J F McCabe

  • 1University of Newcastle-upon-Tyne Dental School, UK.

International Endodontic Journal
|October 26, 1999
PubMed
Summary
This summary is machine-generated.

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Light-activated pattern materials exhibit comparable cure behavior to composite resins, with similar depth of cure and lower polymerization contraction. This allows for incremental buildup, enhancing handling properties in dental applications.

Area of Science:

  • Dental Materials Science
  • Polymer Chemistry
  • Biomaterials Engineering

Background:

  • Light-activated materials are crucial in dentistry.
  • Composite resins are widely used but have limitations.
  • Pattern materials offer potential alternatives for handling and application.

Purpose of the Study:

  • To evaluate the cure behavior of light-activated pattern materials.
  • To compare their depth of cure and polymerization contraction with light-activated composite resins.
  • To determine if pattern materials can be handled similarly to composite resins.

Main Methods:

  • Depth of cure was measured using a penetrometer method.
  • Polymerization contraction was assessed via a minimal load transducer method.

Related Experiment Videos

  • Three light-activated pattern materials were tested following visible light activation.

    • Main Results:

    • Depth of cure for pattern materials ranged from 3.52 mm to 6.76 mm, comparable to composite resins.
    • Polymerization contraction values for pattern materials (0.45%–1.89%) were lower than those of composite resins.
    • Significant differences in both depth of cure and polymerization contraction were observed among the tested materials (P < 0.001).

    Conclusions:

    • Light-activated pattern materials demonstrate cure behavior comparable to composite resins.
    • The observed polymerization contraction is lower than that of composite resins.
    • Pattern materials can be incrementally built up, similar to composite resins, indicating favorable handling characteristics.