Mechanical Properties of Interocclusal Recording Addition-type Silicone Rubber Impression Materials

DOI 2 Citations 8 References
  • ARAKAWA Haruko
    The First Depertment of Prosthodontics, Showa University School of Dentistry
  • SHINODA Hiroto
    The First Depertment of Prosthodontics, Showa University School of Dentistry
  • WARITA Kenji
    The First Depertment of Prosthodontics, Showa University School of Dentistry
  • HIGUCHI Daisuke
    The First Depertment of Prosthodontics, Showa University School of Dentistry
  • KAWAWA Tadaharu
    The First Depertment of Prosthodontics, Showa University School of Dentistry

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Other Title
  • 付加型シリコーン・ラバー印象材による咬合記録材の理工学的性質

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This study determined the mechanical properties of seven interocclusal recording addition-type silicone rubber impression materials, namely, Exabite, President Jet Bite, Bitesil, Memosil C. D., Stat·BR, Mushprint and Express, and one polyether rubber impression material, Ramitec, which was contrasted with the addition-type silicone rubber impression materials. The strain in compression, the compression set and the dimensional change were measured according to American Dental Association (ADA) Specification No.19. The dimensional change was obtained at not only 24 h but 72 h after the start of mixing.<BR>The strain in compression of interocclusal recording addition-type silicone rubber impression materials was smaller than that of the addition-type silicone rubber for impression. The strains in compression of Memosil C. D. and Express were larger than those of the other materials. The compression set and the dimensional change of interocclusal recording addition-type silicone rubber impression materials were the same as those of the addition-type silicone rubber for impression. The compression sets of Bitesil, Memosil C. D. and Ramitec were larger than those of the other materials. The dimensional change was not different from 72 h after the start of mixing. The dimensional change of Memosil C. D. was larger than that of the other materials, and the dimensional change of Stat·BR was smaller than that of Exabite, President Jet Bite, Bitesil and Memosil C. D.

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