Thermal and mechanical properties of microwave- and heat-cured poly(methyl methacrylate) used as dental base material

Usanmaz A., Ates J., Dogan A.

JOURNAL OF APPLIED POLYMER SCIENCE, cilt.90, sa.1, ss.251-256, 2003 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 90 Sayı: 1
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1002/app.12681
  • Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.251-256
  • Anahtar Kelimeler: mechanical properties, thermal properties, resins, dental polymers, glass transition, RESIDUAL MONOMER, ACRYLIC RESIN, GLASS-FIBER, STRENGTH, REPAIR
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

The thermal and mechanical properties of dental base materials cured by microwave and conventional heat methods were studied. The commercial dental base poly(methvl metacrylate) (PMMA) powder and liquid were mixed in a 3/1 ratio. They were polymerized by a peroxy catalyst at 63degreesC, then cured with a boiling water temperature and microwave radiation for periods of 5, 10, 15, 20, 25, 30, and 35 min for heat curing and 1, 2, 3, 5, and 7 min for microwave radiation. The microwave radiation outputs used were 500 and 700 W. The products of 5-min heat curing and 1-, 2-, and 7-min microwave curing were soluble in chloroform. All the others were partially soluble. The viscosity-average molecular weights of the soluble samples were about 1 x 10(6). The thermal properties of the polymer samples were studied by differential scanning calorimetry