Abstract
The purpose of this study was to evaluate the effects of diode laser irradiation with different wavelengths on the surface roughness (Ra) and chemical composition of sandblasted and acid-etched (SLA) titanium implants. Three types of diode lasers with different wavelengths were irradiated on the titanium implants at output powers of 1.0, 2.0, and 3.0 W. The mean Ra values for all spots were measured using a scanning probe microscope. Analysis of variance tests were performed to verify the differences in the Ra between groups according to the type of lasers or power out (α = 0.05). For analyzing chemical composition, atomic and weight percent ratios of titanium, oxygen, and carbon were measured using energy-dispersive spectrometry (EDS). The mean Ra of titanium disc was higher in the 3.0-W output than in 1.0-W or 2.0-W output, but there was no statistically significant difference (p > 0.05). In EDS analysis, it was difficult to find a clear difference in the titanium, oxygen, and carbon element ratios between the laser-irradiated and nonirradiated groups. The irradiation of diode laser with 1.0, 2.0, and 3.0 W output for 15 s decontaminated the SLA titanium surface without damage. However, additional clinical trials will be needed to verify the results of the present study.
Highlights
Dental implants are viable treatment options for the replacement of missing teeth [1]
The surface temperature per output power was significantly different depending on the type of laser (p < 0.001) (Table 2)
We examined the changes in the surfaces of sandblasted and acid-etched (SLA) titanium implants irradiated with diverse types
Summary
Dental implants are viable treatment options for the replacement of missing teeth [1]. Decontaminating implant surfaces is essential to treat peri-implantitis [3]. Various therapeutic techniques, such as tetracycline administration and the use of plastic curettes and ultrasonic devices have been used for peri-implantitis treatment [4,5,6]. These conventional methods are inadequate in eliminating bacteria on roughened implant surfaces [7]. Cleaning dental implants with curettes might cause crack lines on the implant surface which could increase plaque deposition [8]
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