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Koopaie M, Kia Darbandsari A, Hakimiha N, Kolahdooz S. Er,Cr:YSGG laser surface treatment of gamma titanium aluminide: Scanning electron microscopy-energy-dispersive X-ray spectrometer analysis, wettability and Eikenella corrodens and Aggregatibacter actinomycetemcomitans bacteria count-in vitro study. Proc Inst Mech Eng H 2020; 234:769-783. [PMID: 32419598 DOI: 10.1177/0954411920924517] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Dental implants play an important role in oral health. Titanium dental implants must endure the complex microflora environment of the oral cavity. Moreover, bacterial infections have been considered as one of the most important factors of implant failure. The issue of dental improvement through modification of chemical composition and surface treatment has received considerable critical attention. γ-TiAl as a novo biocompatible material revealed a slower corrosion rate in biological media rather Ti-6Al-4V. The objective of this study is to investigate the effect of Er,Cr:YSGG laser on γ-TiAl in comparison with sandblasted and acid-etched samples as the control groups and machined samples.Wettability, surface roughness, surface topography, scanning electron microscopy-energy dispersive X-ray spectrometer analysis of surface and subsurface of samples were investigated and bacteria counts of two periodontal bacterial strains (Aggregatibacter actinomycetemcomitans and Eikenella corrodens) were evaluated on the Er,Cr:YSGG laser surface-treated sandblasted and acid-etched and machined samples.The results of this investigation show that Er,Cr:YSGG laser surface treatment affects surface roughness, surface topography, wettability, chemical composition of the surface and bacteria count. Scanning electron microscopy-energy dispersive X-ray spectrometer analysis of the sample revealed the increment of titanium and oxygen content and reduction of aluminum content in the surface and subsurface layer. A. actinomycetemcomitans and E. corrodens count were found from the lowest level to highest in the sandblasted and acid-etched samples, laser samples and machined samples, respectively.Using controlled parameters of Er,Cr:YSGG laser ensured no significant adverse alteration. The findings to emerge from this study revealed the significant correlation between microbial count and wettability. Furthermore, the contact angle strongly correlated with surface roughness.
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Affiliation(s)
- Maryam Koopaie
- Department of Oral Medicine, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Kia Darbandsari
- Department of Oral Medicine, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Neda Hakimiha
- Laser Research Center of Dentistry, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Sajad Kolahdooz
- Universal Scientific Education and Research Network (USERN), Tehran, Iran
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Yao WL, Lin JCY, Salamanca E, Pan YH, Tsai PY, Leu SJ, Yang KC, Huang HM, Huang HY, Chang WJ. Er,Cr:YSGG Laser Performance Improves Biological Response on Titanium Surfaces. MATERIALS 2020; 13:ma13030756. [PMID: 32046015 PMCID: PMC7040680 DOI: 10.3390/ma13030756] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/04/2020] [Accepted: 02/04/2020] [Indexed: 02/06/2023]
Abstract
Porphyromonas gingivalis infection is one of the causes of implant failures, which can lead to peri-implantitis. Implant surface roughness is reportedly related strongly to P. gingivalis adhesion, which can lead to peri-implantitis and, later, cell adhesion. Our aim was to evaluate the effects of Er,Cr:YSGG laser on titanium (Ti) disc surfaces and its interaction with bacterial adhesion and fibroblast viability. Ti discs underwent two treatments: autoclaving (control) and erbium, chromium-doped yttrium scandium gallium garnet (Er,Cr:YSGG) laser treatment (test). Ti disc surfaces were examined with scanning electronic microscope (SEM), Energy-dispersive spectrometry (EDX), X-ray photoelectron spectroscopy (XPS). The surface roughness same as wettability were also investigated. Fibroblast viability was assessed with the water-soluble tetrazolium 1 (WST-1) test, and osteoblast differentiation was assessed with the alkaline phosphatase (ALP) assay. Bacterial structure and colony formation were detected with scanning electron microscopy and Gram stain. In comparison to control discs, the test discs showed smoother surfaces, with 0.25-µm decrease in surface roughness (p < 0.05); lower P. gingivalis adhesion (p < 0.01); less P. gingivalis colonization (p < 0.05); and increased fibroblast viability and osteoblast differentiation (p < 0.05). Er,Cr:YSGG laser treatment improved disc surfaces by making them slightly smoother, which reduced P. gingivalis adhesion and increased fibroblast viability and osteoblast differentiation. Er,Cr:YSGG laser treatment can be considered a good option for managing peri-implantitis. Further investigations of laser-assisted therapy are necessary for better guidelines in the treatment of peri-implantitis.
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Affiliation(s)
- Wan-Ling Yao
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (W.-L.Y.); (J.C.Y.L.); (Y.-H.P.); (H.-M.H.)
| | - Jerry Chin Yi Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (W.-L.Y.); (J.C.Y.L.); (Y.-H.P.); (H.-M.H.)
| | - Eisner Salamanca
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (W.-L.Y.); (J.C.Y.L.); (Y.-H.P.); (H.-M.H.)
| | - Yu-Hwa Pan
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (W.-L.Y.); (J.C.Y.L.); (Y.-H.P.); (H.-M.H.)
- Department of General Dentistry, Chang Gung Memorial Hospital, Taipei 106, Taiwan
- Graduate Institute of Dental & Craniofacial Science, Chang Gung University, Taoyuan 333, Taiwan
- School of Dentistry, College of Medicine, China Medical University, Taichung 404, Taiwan
| | - Pei-Yo Tsai
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (W.-L.Y.); (J.C.Y.L.); (Y.-H.P.); (H.-M.H.)
| | - Sy-Jye Leu
- Department of Microbiology and Immunology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan;
| | - Kai-Chiang Yang
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan;
| | - Haw-Ming Huang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (W.-L.Y.); (J.C.Y.L.); (Y.-H.P.); (H.-M.H.)
| | - Huei-Yu Huang
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan;
- Dental Department, Taipei Medical University, Shuang-Ho hospital, Taipei 235, Taiwan
- Correspondence: (H.-Y.H.); (W.-J.C.); Tel.: +886-2-27361661 (H.-Y.H. & W.-J.C.)
| | - Wei-Jen Chang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (W.-L.Y.); (J.C.Y.L.); (Y.-H.P.); (H.-M.H.)
- Dental Department, Taipei Medical University, Shuang-Ho hospital, Taipei 235, Taiwan
- Correspondence: (H.-Y.H.); (W.-J.C.); Tel.: +886-2-27361661 (H.-Y.H. & W.-J.C.)
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