TY - BOOK AU - Alaa Mamdouh Moharam Hamed AU - Ahmed Zoheir Elhoshy , AU - Amr Ahmed Shbka , TI - The effect of two light sources on the degree of conversion of resin composites at different depths / PY - 2010/// CY - Cairo : PB - Alaa Mamdouh Moharam Hamed , KW - Degree of conversion KW - Light activating sources KW - Resin composites N1 - Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Operative Dentistry; Issued also as CD N2 - This investigation was conducted to evaluate , the depth of cure of two types of light activated resin composite materials using two different activating light sources , light emitting diode and quarts tungsten halogen , through determination of the degree of conversion percentage using Fourier Transferred Infrared Spectrometer and measurement of hardness at different depths using Vickers Microhardness ER -