Dynamic mechanical analysis of provisional resin materials reinforced by metal oxides

Korkmaz T., Doan A., Usanmaz A.

BIO-MEDICAL MATERIALS AND ENGINEERING, cilt.15, sa.3, ss.179-188, 2005 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 15 Sayı: 3
  • Basım Tarihi: 2005
  • Dergi Adı: BIO-MEDICAL MATERIALS AND ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.179-188
  • Anahtar Kelimeler: dynamic mechanical analysis (DMA), autopolymerized PMMA and PEMA, light cured PMMA, provisional restorative materials, DENTAL-BASE MATERIAL, FIXED RESTORATIONS
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

In this study, several provisional resin materials were investigated by dynamic mechanical analysis (DMA). The materials were autopolymerized PMMA and PEMA, light cured PMMA. Autopolymerized PMMA has the highest T-g (131 degrees C) compared to that of the autopolymerized PEMA (102 degrees C) and light cured PMMA (120 degrees C). The storage moduli for autopolymerized PMMA, autopolymerized PEMA and light cured PMMA are 2.9, 1.8 and 2.3 GPa, respectively. The loss moduli of the same resins are 330, 300 and 350 MPa, respectively. Each of these resins were reinforced with 1%, 3% and 5% of each of metal oxides of MgO, ZrO2 and Al2O3 and then studied with DMA. Small changes were observed for dynamic mechanical properties tested. However, the changes are not systematic and noticeable. This is most probably due to smaller size of metal oxides particles compared to that of polymer particle size.