TY JOUR TI COMPARISON OF THE BENDING STRENGTH OF COMPOSITE BLOCKS FOR CAD/CAM CHAIRSIDE TECHNIQUES FOR CROWN MANUFACTURING KW composite materials KW bending strength KW modulus of elasticity KW CAD/CAM chairside KW three-point bending KW mechanical testing KW Russian and foreign composites KW strength characteristics JO Actual problems in dentistry AU Vahobov, A.S. AU Vafin, S.M. AU Khasan, A.M. PY 2026 IS 22 PB TIRAZH Publishing House