CO2 Laser Irradiation Positively Affects the Surface Energy of Rough Titanium Surfaces

Area of Science:

• Biomaterials Science
• Surface Engineering
• Dental Implantology

Background:

• Osseointegration of dental implants is critical for their long-term success.
• Surface properties, particularly hydrophilicity (wettability), play a vital role in achieving osseointegration.
• Modifying implant surfaces to enhance wettability is a key area of research in implantology.

Purpose of the Study:

• To investigate the effect of carbon dioxide (CO2) laser irradiation on the free surface energy of rough titanium surfaces.
• To evaluate changes in wettability of sandblasted, large grit, acid-etched (SLA) titanium surfaces after CO2 laser treatment.

Main Methods:

• Sandblasted, large grit, acid-etched (SLA) titanium disks were used.
• Contact angle measurements were performed using saline, albumin, and artificial blood at 25°C and 37°C.
• Titanium surfaces were irradiated with a CO2 laser (10,600 nm) and contact angles were re-evaluated.

Main Results:

• CO2 laser irradiation significantly reduced the contact angles for saline and artificial blood at both temperatures (p < 0.05).
• A statistically significant improvement in wettability was observed for saline and blood post-irradiation.
• Albumin contact angles showed no significant change at 25°C but improved at 37°C, indicating a complex interaction.

Conclusions:

• CO2 laser irradiation generally enhances the wettability and hydrophilicity of rough titanium (SLA) surfaces.
• The findings suggest that CO2 laser treatment is a promising method for improving the surface properties of dental implants.
• Enhanced surface wettability is expected to positively influence osseointegration and clinical outcomes of titanium implants.