<i>Candida albicans</i> aspects of novel silane system–coated titanium and zirconia implant surfaces

Villard, Nicolas Marc; Seneviratne, Chaminda Jayampath; Tsoi, James Kit‐Hon; Heinonen, Maarit; Matinlinna, Jukka Pekka

doi:10.1111/clr.12338

Cited by 49 publications

(28 citation statements)

References 42 publications

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“…Recent studies by Matinlinna and co-workers demonstrated that silanes were able to reduce the surface free energy of titanium surfaces [53,165], and has proven to reduce the formation of viable C. Albicans in vitro [64], although in the zirconia case the reduction of C. Albicans was also found but not due to the decrease of surface free energy as discussed in Section 2.1.2. Indeed, the reported thickness of silane was $ 50nm which could be regarded as self-assembled multilayers or ultra-thin film.…”

Section: Silanementioning

confidence: 94%

“…A recent study by Villard et al [64] investigated the effects of a novel silane coating on adhesion characteristics of C. albicans to titanium and zirconia surfaces with similar surface roughness and morphology. The authors reported that, on grit-blasted titanium surface, the surface free energy was lowered after silane application, with a statistically higher viable colony-forming unit (CFU) counts for C. albicans on the uncoated surface with higher surface free energy.…”

Section: Surface Free Energymentioning

confidence: 99%

“…This was ascribed to the antibacterial properties of implant surface after chemical modification [45], e.g. silane [64]. Even some previous studies suggested that the variation of chemical composition and nanomorphology of surface coatings have no effect on the biofilm formation of S. epidermidis [81].…”

Section: Surface Chemistrymentioning

confidence: 99%

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Bacterial adhesion mechanisms on dental implant surfaces and the influencing factors

Han

Tsoi

Rodrigues

et al. 2016

International Journal of Adhesion and Adhesives

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a b s t r a c tBacterial adhesion on dental implants may cause peri-implant disease including peri-implant mucositis and peri-implantitis. Peri-implantitis may lead to bone resorption and eventually loss of the implant. Therefore, the factors which influence bacterial adhesion are critical and revealed by many studies. The purpose of this review is to summarize the current knowledge of factors influencing the bacteria adhesion, including local factors of implant surface topography, abutment, cement and oral environment factors of saliva and protein. In addition, the corresponding strategies of surface modifications, coatings and challenges for implant materials as prevention and treatment approaches for bacteria adhesion on implant will also be discussed. We expect to give an overall picture of the bacteria adhesion on implant, and provide future perspectives, such as laser therapy, photocatalysis, plasma and bioelectric effect to inspire researchers to explore on this issue.

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Section: Silanementioning

confidence: 94%

Section: Surface Free Energymentioning

confidence: 99%

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Bacterial adhesion mechanisms on dental implant surfaces and the influencing factors

Han

Tsoi

Rodrigues

et al. 2016

International Journal of Adhesion and Adhesives

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“…Surface characteristics can influence bond strength of resin cements [6][7][8][9][10][11][12] and glazing ceramic [13] to zirconia prosthetics, osteointegration ability [14], bacteria [15,16], and candida [17] adhesion to zirconia abutment and implant surface. Although zirconia ceramic has an acid-resistant polycrystalline structure, it has been found that zirconia can be etched by hydrofluoric acid, such that the micro-morphological surface could be created by varying the concentration and (a) Group C (control group): No further modification treatment; (b) Group GB: The zirconia samples were grit-blasting with 110 µm silica-coated alumina particles (Rocatecs, 3M ESPE, Seefeld, Germany) at a constant pressure of 3.0 bar for 15 s; (c) Group HF: The zirconia samples were then treated with 40% hydrofluoric acid (FARCO, Hong Kong, China) for 25 min at 100 • C, and then rinsed with deionized water for 60 s and air dried; and (d) Group GBHF: Zirconia surface were treated with grit-blasting with 110 µm silica-coated alumina particles (Rocatecs) at a constant pressure of 3.0 bar for 15 s, then treated with 40% hydrofluoric acid for 25 min at 100 • C, and rinsed with deionized water for 60 s and air dried.…”

Section: Introductionmentioning

confidence: 99%

Influence of Grit-Blasting and Hydrofluoric Acid Etching Treatment on Surface Characteristics and Biofilm Formation on Zirconia

et al. 2017

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Abstract:The objective of this study was to investigate the effect of hydrofluoric acid etching treatment on the surface characteristics of zirconia and Streptococcus sanguinis (S. sanguinis) and Porphyromonas gingivalis (P. gingivalis) biofilm formation on zirconia. Zirconia specimens were prepared with different treatments, including being polished with 1000-grit SiC abrasive paper as the control group (Group C), grit-blasted with 110 µm silica-coated alumina particles (Group GB), etched with 40% hydrofluoric acid for 25 min at 100 • C (Group HF), and grit-blasted with 110 µm silica-coated alumina particles and then etched with 40% hydrofluoric acid for 25 min at 100 • C (Group GBHF). The highest surface roughness values and hydrophilicity were shown in Group HF and Group GBHF. Scanning electron microscopy (SEM) showed that hydrofluoric acid can create a crater-like appearance on the zirconia surface. An energy-dispersive X-ray (EDX) analysis demonstrated similar element concentration (wt %) in Group C, Group HF, and Group GBHF, but not for Group GB with higher concentrations of Al and Si element. Colony forming unit (CFU) counts showed that a similar amount of S. sanguinis biofilm and significantly lower P. gingivalis biofilm were formed on zirconia surfaces in Group HF and Group GBHF compared to that in Group C after three days of bacteria culture (p < 0.05). These results indicate that hydrofluoric acid etching on zirconia may not increase S. sanguinis and P. gingivalis mature biofilm formation on zirconia.

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“…Zirconia itself is rather hydrophobic and has a low surface free energy [3]. Its very low (approximately 5%) surface concentration of –OH groups suggests that only a very small number of reactive groups are available for chemical bonding [4,5].…”

Section: Introductionmentioning

confidence: 99%

Improved Resin–Zirconia Bonding by Room Temperature Hydrofluoric Acid Etching

et al. 2015

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This in vitro study was conducted to evaluate the shear bond strength of “non-self-adhesive” resin to dental zirconia etched with hydrofluoric acid (HF) at room temperature and to compare it to that of air-abraded zirconia. Sintered zirconia plates were air-abraded (control) or etched with 10%, 20%, or 30% HF for either 5 or 30 min. After cleaning, the surfaces were characterized using various analytical techniques. Three resin cylinders (Duo-Link) were bonded to each treated plate. All bonded specimens were stored in water at 37 °C for 24 h, and then half of them were additionally thermocycled 5000 times prior to the shear bond-strength tests (n = 12). The formation of micro- and nano-porosities on the etched surfaces increased with increasing concentration and application time of the HF solution. The surface wettability of zirconia also increased with increasing surface roughness. Higher concentrations and longer application times of the HF solution produced higher bond-strength values. Infiltration of the resin into the micro- and nano-porosities was observed by scanning electron microscopy. This in vitro study suggests that HF slowly etches zirconia ceramic surfaces at room temperature, thereby improving the resin–zirconia bond strength by the formation of retentive sites.

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Candida albicans aspects of novel silane system–coated titanium and zirconia implant surfaces

Abstract: Silica-coating and silanization had modified the titanium and zirconia surfaces significantly. Both the control and experimental silane primers might inhibit the biofilm formation of C. albicans.

Cited by 49 publications

References 42 publications

Bacterial adhesion mechanisms on dental implant surfaces and the influencing factors

Bacterial adhesion mechanisms on dental implant surfaces and the influencing factors

Influence of Grit-Blasting and Hydrofluoric Acid Etching Treatment on Surface Characteristics and Biofilm Formation on Zirconia

Improved Resin–Zirconia Bonding by Room Temperature Hydrofluoric Acid Etching

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