Mechanical characteristic and monomer conversion effects of post heated and press on ceramage ceramic optimized polymer material
Zhao Hu · Chinese Journal of Prosthodontics · 2011
Objective: To study the influences of post heated and press on the mechanical characteristic and monomer conversion of Ceramage ceramic optimized polymer material.Methods: 20 compress strength specimens and 20 diameter tensile strength specimens were made with Ceramage ceramic optimized polymer material.In each group 10 specimens cured in Solidilite light-curing case,the others were treated secondarily after cured in Solidilite,with the condition of 120℃,0.6MPa and 7min.All specimens were tested with Bose ElectroForce3520 type tensile testing machine.Then twenty specimens of Ceramage ceramic optimized polymer material were cured in Solidilite light cure case,10 specimens have been post heated in 120℃ and pressured 0.6MPa for 7min.Perkin Elmer 1760-X fourier transform infrared spectrometer was used to compare the monomer conversion of two groups.Results: The compressive strengths and diameter tensile strengths had significantly increase after secondarily treatment(P 0.01),with increment of 12.90%and 10.84%(P 0.01).The monomer conversion of Ceramage ceramic optimized polymer significantly increased from 72.7% to 75.4%,with the increasing degree of 2.7%.Conclusion: Secondarily treatment with high temperature and press can significantly increase the monomer conversion of Ceramage ceramic optimized polymer material,and the mechanical characteristic of Ceramage ceramic optimized polymer material can also been improved.