Synthesis and Characterization of New Dental Composites Using Calcium Fluoroaluminosilicate Glass

New dental composites prepared from Bis_GMA/TEGDMA with different ratios of Calcium fluoroaluminosilicate glass used as filler. The particle size of Calcium fluoroaluminosilicate glass was within (1-10) µm. visible light with 480nm wavelength and duration time of 40sec.was used in the polymerization process. Physical and mechanical properties of the dental material prepared were studied. These properties including, shrinkage; depth of cure, thermal expansion coefficient, Degree of conversion and diametral tensile strength (DTS). The static flexural strength and flexural modulus were measured using a three-point bending set up according to the ISO-4049 specification. The volumetric shrinkage values was found ranging between 2.6% to 2.9%, The degree of conversion was found between 79.57% to 68.27%, The depth of cure is 2.6 to 3.3mm, thermal expansion coefficient was also between 46.7 and 58.4×10 -6 °C -1 . While the mechanical properties such as the highest flexural strength was found about 90.35MPa, the flexural modulus measurements revealed the value of (11.29GPa), and finally DTS measurements showed 54.27MPa. All tested composite samples were complied with the requirement of ISO 4904: 2008 and ANSI/ADA specification No. 27 for cure resins.