Thermal and spectral behaviour of a light-cured methacrylate-based composite material used in dentistry

被引：0
作者：
H. O. Manolea
P. Rotaru
G. Manolea
E. Morîntale
R. Rîcă
机构：
[1] University of Medicine and Pharmacy Craiova,Department of Dental Materials, Faculty of Dentistry
[2] University of Craiova,Department of Physics, Faculty of Exact Sciences
[3] University of Craiova,Department of Electromechanics, Faculty of Electrical Engineering
来源：
Journal of Thermal Analysis and Calorimetry | 2013年 / 114卷
关键词：
Light-cured material used in dentistry; Methyl methacrylate; Thermal analysis; Fourier transform infrared spectroscopy; Degree of conversion;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The evolution of the polymerization of a light-cured methacrylate-based composite material (Pekalite) used in dentistry was studied. Fourier transform infrared spectroscopy and thermal analysis (TA) showed that with increasing the photo-polymerization time from 5 to 60 s, the degree of conversion increases from 32.5 to 59.6 % and thermal stability of the composite material increases from 144.6 to 270 °C. Growth of photo-polymerization time from 5 to 60 s produces an improvement in the mechanical strength of the composite material from 153 to 248 MPa. Spectral analysis and TA are two complementary and rapid methods for determining the degree of polymerization of composite materials used in dentistry.
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页码：1325 / 1331
页数：6
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