Study of mechanical properties of porcelain restorative material by using Co2 laser beam

Abstract EN

The aim of this research is to study the mechanical properties of porcelain restorative material by using CO2 laser beam.

(10) specimens of porcelain material have been prepared.

They divided into two groups with dimensions (4*10mm) 10.

mm) respectively*6) & Eight of these specimens are irradiated by CO2 laser device at different laser powers (2,3,4,& 5) Watt at a fixed time (20 sec).

The mechanical properties which was tested, such as micro-hardness, diametrical strength, density, and porosity.

The value of micro-hardness, diametrical strength, density are increased at different laser power except (3W), because internal deformation occurred in this laser power density up to (3W).

Glazed layer may be occur because the effect of (4, 5) Watt laser, consequently the value of porosity decreased.