Abstract
Photoactivation with ultraviolet C light can reverse the effects derived from biological ageing by restoring a hydrophilic surface. Ten titanium discs were randomly divided into three groups: a control group, a 6 W group, and an 85 W group. A drop of double-distilled, deionized, and sterile 10 µL water was applied to each of the discs. Each disc was immediately photographed in a standardized and perpendicular manner. Measurements were taken based on the irradiation time (15, 30, 60, and 120 min). UVC irradiation improved the control values in both groups. There was no difference in its effect between the 6 W group and the other groups during the first 30 min. However, after 60 min and up to 120 min, 85 W had a significantly stronger effect. The contact angles with the 85 W ultraviolet light source at 60 and 120 min were 19.43° and 31.41°, respectively, whereas the contact angles for the 6 W UVC source were 73.8° and 61.45°. Power proved to be the most important factor, and the best hydrophilicity result was obtained with a power of 85 W for 60 min at a wavelength of 254 nm.
Highlights
Published: 11 June 2021Titanium is a material devoid of toxicity and is stable and easy to obtain
When an ultraviolet (UVC) light bulb of 85 W was used as the source, the average angle obtained at 15 min was 70.25◦, 66.28◦ at 30 min, 19.43◦ at 60 min, and 31.41◦ at 120 min
This study showed that ultraviolet C light (UVC) photoactivation modifies titanium surfaces from a hydrophobic to a hydrophilic state at both 6 and 85 W, each showing statistically significant differences from the control group
Summary
Published: 11 June 2021Titanium is a material devoid of toxicity and is stable and easy to obtain. To improve its clinical characteristics, there have been attempts to increase the bioactivity of titanium implants [1,2,3]. The focus was on improving osseointegration, which is defined as the direct and functional connection between living, structured bone and the surface of an implant under load. The physicochemical properties of the implant surface, its topography, and chemical composition have been the focus for improving biocompatibility [4]. Under optimal conditions, this improvement implies an increase in the absorption of ions and molecules, stimulating cellular attraction, proliferation, and expansion. The result is a higher degree of contact between the bone and the implant (BIC)
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