ملخص الدراسة:

Dental composites material prepared in by addition different weight ratio of biomaterial fillers to Calcium-Fluoroaluminosilicate glass. The oyster shell powder was added at weight ratio 3%, 5 %, 7% and 10% into the glass filler as a biomaterial. The physical properties such as the depth of cure, sorption, solubility, flexural strength and Diametric tensile strength were determined according to ISO 4049. The Results showed that adding 3% weight ratio of Oyster shell to Fluoroaluminosilicate glass was led to improved the flexural strength, sorption, and DTS. However, increase a load of oyster shell powder ( 5%) indicated a reduction within the mechanical properties of the tested composites.