Shrinkage characteristics of light-cured composite resin

Kazuo Arakawa

    Research output: Contribution to journalArticlepeer-review


    Polymerization shrinkage of a light-cured composite resin was studied using artificial cylindrical cavities. To examine the property change as functions of cavity depth and irradiation time, we performed two experiments; micro-Vickers hardness and tensile tests. Then we determined the hardness H v and modulus E of the resin specimens, and the following results were obtained. The values of H v and E exhibited the maximum near the irradiation surface and then decreased gradually with the depth and the maximum values increased as the irradiation time increased. To study the property change, we introduced an analytical model and suggested that it can predict all the important features of the property change as functions of the depth and irradiation time.

    Original languageEnglish
    Pages (from-to)1377-1381
    Number of pages5
    JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
    Issue number793
    Publication statusPublished - 2012

    All Science Journal Classification (ASJC) codes

    • General Materials Science
    • Mechanics of Materials
    • Mechanical Engineering


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