Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2023 Sep 11;15(2):117-122.
doi: 10.34172/japid.2023.015. eCollection 2023.

Evaluation of UV photofunctionalization effect on ultrastructural properties of SLA titanium disks: An in vitro study

Behzad Houshmand  1 , Zeinab Rezaei Esfahroodi  1 , Aliasghar Behnamghader  2 , Sadegh Mohammadreza  3 , Aytan Azizi  4 , Kave Ramezani  1
Affiliations

Evaluation of UV photofunctionalization effect on ultrastructural properties of SLA titanium disks: An in vitro study

Behzad Houshmand et al. J Adv Periodontol Implant Dent. .

Abstract

Background: The success rate of dental implants diminishes over time; the lack of osseointegration and infection are the major causes of most implant failures. One of the effective methods to improve the surface properties is to irradiate ultraviolet (UV) light. This study investigated the effect of UV photofunctionalization on the ultrasuperficial properties of sandblasted, large-grit, acid-etched (SLA) titanium discs.

Methods: In this in vitro study, 24 sandblasted and acid-etched titanium discs, with a lifespan of more than four weeks, were categorized into three groups (n=8): control, ultraviolet C (UVC), and ultraviolet B (UVB). Then, they were exposed to a UV light source for 48 hours at a 1-cm distance. In addition to measuring the contact angle between the liquid and the disc surface in each of the three groups, the atomic concentrations of carbon, oxygen, and nitrogen atoms were measured at three different sites on each disc. One-way ANOVA and post hoc Tukey tests were used to analyze data.

Results: The mean concentration of carbon atoms significantly differed in the control, UVC, and UVB groups (P<0.001). The mean concentrations of nitrogen atoms differed significantly between the three groups (P<0.001). However, the mean concentrations of oxygen atoms were not significantly different between the three groups. In examining the contact angle, wettability was higher in the UVC group than in the UVB group and higher in the UBV group than in the control group.

Conclusion: Photofunctionalization with UV light significantly decreased carbon and nitrogen concentrations on the surface of titanium implants, indicating that the implant's superficial hydrocarbons were eliminated. It was observed that UVC photofunctionalization was more effective than UVB photofunctionalization in reducing superficial contamination and improving wettability.

Keywords: Dental implants; Photofunctionalization UV; Titanium disks.

PubMed Disclaimer

Conflict of interest statement

The authors declare that they have no competing interests with regard to the authorship and/or publication of this article.

Figures

Figure 1
Figure 1
Figure 2
Figure 2
Figure 3
Figure 3
Figure 4
Figure 4
See this image and copyright information in PMC

References

    1. de Avila ED, Lima BP, Sekiya T, Torii Y, Ogawa T, Shi W, et al. Effect of UV-photofunctionalization on oral bacterial attachment and biofilm formation to titanium implant material. Biomaterials. 2015;67:84–92. doi: 10.1016/j.biomaterials.2015.07.030. - DOI - PMC - PubMed
    1. Klang C. Effects Of UV-Exposure of Titanium-Based Dental Implant Materials [thesis]. Göteborg, Sweden: Chalmers University of Technology; 2010.
    1. Tominaga H, Matsuyama K, Morimoto Y, Yamamoto T, Komiya S, Ishidou Y. The effect of ultraviolet photofunctionalization of titanium instrumentation in lumbar fusion: a non-randomized controlled trial. BMC Musculoskelet Disord. 2019;20(1):292. doi: 10.1186/s12891-019-2672-3. - DOI - PMC - PubMed
    1. Pyo SW, Park YB, Moon HS, Lee JH, Ogawa T. Photofunctionalization enhances bone-implant contact, dynamics of interfacial osteogenesis, marginal bone seal, and removal torque value of implants: a dog jawbone study. Implant Dent. 2013;22(6):666–75. doi: 10.1097/id.0000000000000003. - DOI - PubMed
    1. Roy M, Pompella A, Kubacki J, Szade J, Roy RA, Hedzelek W. Photofunctionalization of titanium: an alternative explanation of its chemical-physical mechanism. PLoS One. 2016;11(6):e0157481. doi: 10.1371/journal.pone.0157481. - DOI - PMC - PubMed

LinkOut - more resources