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Development of tight-Activated Glass Ionomer Cements

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Abstract

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3. ¾Ë·ç¹Ì³ª¸¦ ÷°¡ÇÏ¿© ±¤ÁßÇÕÇü ±Û¶ó½º ¾ÆÀÌ¿À³ë¸Ó ½Ã¸àÆ®¸¦ °­È­ÇÑ °æ¿ì ½É¹Ì¼ºÀ» À¯
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À¸³ª °áÇÕ°­µµ´Â °¨¼ÒÇÏ¿´´Ù.

The object of this study was to synthesize the experimental light-activated glass
ionomer cement by change of glass components such as aluminum, fluorine, calcium,
and strontium. To reinforce the glass ionomer cement, additions of metallic powder,
ceramic powder, and light-activated composite resin to glass ionomer cements were
performed. Radiopacity, compressive strength, bond strength fracture toughness,
solubility, and cytotoxicity of the various experimental glass ionomer cements were
investigated.
From the experiment, the following results were obtained :
1. Experimental light-activated glass ionomer cement showed similar physical and
mechanical properties to commercial glass ionomer cement. Radiopacity, resistance of
solubility, fracture toughness, and compressive strength of the experimental cement were
superior to those of commercial cements, but bond strength and biocompatibility of the
experimental cement were inferior to commercial cements.
2. Addition of amalgam powder to light-activated glass ionomer cement resulted in the
lower compressive strength and fracture toughness, but addition of aluminium powder
resulted in the enhanced the fracture toughness.
3. Addition of alumina powder (Al2O3) could enhance the
compressive strength and fracture toughness of glass ionomer cement without sacrificing
of the esthetic property.
4. Physical mixing light-activated glass ionomer cement with light-activated composite
resin could enhanced the physical properties except for bond strength.

Å°¿öµå

light-activated glass ionomer cement; reinforcement; physical properties; biocompatibility;

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