Abstract:
In this research we are studied the hardness of the amalgam teeth
filling material by utilizing Brinell harness test apparatus. Several tests
were carried out on different amalgam mixtures that were subjected to
irradiation for the two minutes of both He-Ne lasers at wavelength
632.8 nm, 1 mW power, Omega laser with wavelength 675 nm, at a
power 15 mW. The samples were left for different time intervals before
hardness test were carried out.
Some other samples were prepared for test without irradiation, and
then they were tested for hardness at different intervals also.
The samples were then compared to emphasize the effect of laser
on the value of hardness.
The results appeared the increases of observation in the hardness
of the samples irradiated by two lasers rather than the samples without
irradiation.
.laser 1 mW
All of the samples irradiated by two lasers needed to 6 hours only
to reach the value of hardness equally 30 hours for those samples
.without irradiated
The samples irradiated by Diode laser 15 mW appear the
increasing of the hardness more than the samples irradiated by He-Ne
.laser 1 mW
All of the samples irradiated by two lasers needed to 6 hours only
to reach the value of hardness equally 30 hours for those samples
.without irradiated
