Effects of added sodium alginate on mechanical strength of apatite cement

Shinya Tajima, Norihiko Nishimoto, Yuji Kishi, Shigeki Matsuya, Kunio Ishikawa

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Effects of added sodium alginate on the mechanical strength of Biopex®, one type of apatite cement, were investigated since sodium alginate addition is very effective for Biopex® to acquire anti-washout property. Addition of sodium alginate into the liquid phase of Biopex® resulted in a slower transformation to apatitic monolith. As a result, mechanical strength of set Biopex® in terms of diametral tensile strength (DTS) decreased when it was hardened in an incubator kept at 37°C and 100% relative humidity for 7 days. However, DTS value increased with increase in the amount of added sodium alginate when the Biopex® paste was immersed in 0.9% saline at 37°C for 7 days. Set Biopex® with less sodium alginate also showed larger porosity. Based on these findings, we concluded that added sodium alginate was effective in increasing the mechanical strength of Biopex® by inhibiting liquid penetration into its paste when it is exposed to body fluids.

Original languageEnglish
Pages (from-to)329-334
Number of pages6
Journaldental materials journal
Volume23
Issue number3
DOIs
Publication statusPublished - Sep 2004

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Sodium alginate
Apatites
Apatite
Strength of materials
Cements
Tensile Strength
Ointments
Tensile strength
Body fluids
Incubators
Liquids
Porosity
Body Fluids
Humidity
Biopex
alginic acid
Atmospheric humidity

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Dentistry(all)

Cite this

Effects of added sodium alginate on mechanical strength of apatite cement. / Tajima, Shinya; Nishimoto, Norihiko; Kishi, Yuji; Matsuya, Shigeki; Ishikawa, Kunio.

In: dental materials journal, Vol. 23, No. 3, 09.2004, p. 329-334.

Research output: Contribution to journalArticle

Tajima, Shinya ; Nishimoto, Norihiko ; Kishi, Yuji ; Matsuya, Shigeki ; Ishikawa, Kunio. / Effects of added sodium alginate on mechanical strength of apatite cement. In: dental materials journal. 2004 ; Vol. 23, No. 3. pp. 329-334.
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