バルビツール酸誘導体を用いた歯科用常温重合レジンの変色に関する検討  [in Japanese] Color Stability of Self-Curing Resins with Barbituric Acid Derivatives  [in Japanese]

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Author(s)

Abstract

The color change in samples of unpigmented self-curing resins prepared with a new initiator using barbituric acid derivatives (Ba-CI-Cu) was found to be less than specimens prepared with conventional Benzoylperoxide-tert Amine initiator (BPO-tert Amine). One cause of the perceivable color change for BPOtert Amine was the increase in the values of |Δa*| and |Δb*| during storage periods. ANOVA showed statistical significance in that the higher the storage temperatureand the longer the periods of sunlight exposure, the higher the value of ΔE*ab for BP0-tert Amine became. On the other hand, in the case of pigmented resins, the values of ΔE*ab for ivory shade (Ba-Cl-Cu/I) except 60°C-dry and for pink shade (Ba-Cl-Cu/P) were less than 1 during storage for 56 days. Therefore, no color differences could be perceive either before or after storage and exposure to the various conditions. In the case of 37°C-wet, i.e., oral environment, the values of ΔE*ab for Ba-Cl-Cu/I and Ba-Cl-Cu/P were approximately 1/6 to 1/2 and 1/15 to 1/4, respectively, compared with the values of a commercially available product.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 42(1), 11-19, 1998-02-01

    Japan Prosthodontic Society

References:  13

Cited by:  4

Codes

  • NII Article ID (NAID)
    10008168340
  • NII NACSIS-CAT ID (NCID)
    AN00197911
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03895386
  • Data Source
    CJP  CJPref  J-STAGE 
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