International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Titanium alloys are essential in biomedicine due to their high specific strength and biocompatibility, with surface properties directly influencing the successful osseointegration of implants. In this study, surface texturing of an experimental titanium alloy was performed using an ultrafast femtosecond laser with varying pulse energies. Roughness and topography were analysed using optical profilometry and confocal laser scanning microscopy, while microhardness was measured by the Vickers method. The results show that a pulse energy of 2.1 µJ, with a wavelength of 1030 nm, pulse duration of 190 fs, and repetition rate of 1 MHz, constitutes the optimal laser process parameters for achieving the desired surface properties in engineering and biomedical applications.

Lithium disilicate glass-ceramic is one of the most commonly used aesthetic materials in fixed prosthetics that requires surface pre-treatment. Recent studies have begun to propose a femtosecond laser for processing to improve surface morphology and microstructure, but without defined parameters. Therefore, the aim of this study is to determine the optimal parameters for the surface morphology of lithium disilicate glass-ceramics. The untreated sample of lithium disilicate glass-ceramic was observed with an optical profilometer. It was then treated with a femtosecond laser, forming squares on the surface of the sample, which were observed with an optical profilometer, and the surface morphology was analysed with a scanning electron microscope. The results show that laser treatment with higher energy densities leads to an increased roughness of the surface.