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Dental Properties of Polymer Composite Filled with Barium Silicate Hybridized with Hydroxyapatite  

Seo, Ki-Taek (Department of Polymer Science & Engineering, Dankook University)
Kim, Oh-Young (Department of Polymer Science & Engineering, Dankook University)
Publication Information
Polymer(Korea) / v.31, no.2, 2007 , pp. 141-147 More about this Journal
Abstract
Dental properties of polymer composite loaded with hybrid filler of barium silicate (BaSi) and hydroxyapatite, which is a principal component of human bone material, were investigated. A visible light system was utilized to activate the acrylic resin matrix of the composite. Based on the experimental results, it was found that mechanical strength of the composite was consistently increased with an increase of BaSi content in the hybrid filler. And those value rose above the dental specification enough to apply for dental materials. However, abrasion resistance was slightly decreased with increasing BaSi content in the filler. Depth of cure value was 6 to 9 mm applicable for dental restoration irrelevant to hybrid filler composition. On the other hand, there was no strict trend between filler composition and polymerization shrinkage as well as degree of conversion.
Keywords
hydroxyapatite; barium silicate; hybrid; dental; restorative;
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