Fatigue and Fluoride Corrosion on <i>Streptococcus mutans</i> Adherence to Titanium‐Based Implant/Component Surfaces

Corrêa, Cássia Bellotto; Pires, Juliana Rico; Fernandes-Filho, Romeu Belon; Sartori, Rafael; Vaz, Luı́s Geraldo

doi:10.1111/j.1532-849x.2009.00463.x

Cited by 43 publications

(43 citation statements)

References 19 publications

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“…The presence of ceramic restorations in the oral cavity of patients is generally disregarded in performing the use of APF gel during a clinical session [9]. In this study, the continuous period of immersion was used aiming to reproduce the cumulative effect of the acidic solutions, simulating 2 years of hygiene habits [13,18,20].…”

Section: Discussionmentioning

confidence: 99%

Bacterial Adhesion on Lithium Disilicate Ceramic Surface Exposed to Different Hydrofluoric Solutions

et al. 2018

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Abstract:The effect of Fluorine solutions on the surface and bacterial adhesion of lithium disilicate is a concern. The aim was to evaluate the surface roughness and the adhesion of Streptococcus sanguinis on lithium disilicate ceramic, under the influence of different solutions containing Fluorine. Forty lithium disilicate (IPS e.max Press Impulse) discs (2.5 × 5 mm) was divided into 4 groups (n = 10): artificial saliva (Group AS), 0.2% sodium fluoride (Group NaF), 1.23% acidulated phosphate fluoride gel (Group APF), and mouthwash (Group MW). Roughness analyses were performed before and after the immersion. The surface aspect was evaluated by scanning electron microscopy (SEM) and the adhesion of Streptococcus sanguinis were evaluated after immersion in the solutions. The data obtained were submitted to the analysis of variance (ANOVA) and the Tukey test (α = 0.05). The Group APF presented a bigger roughness (3.263), statistically different to the other solutions. The bacterial adhesion in the Group APF (5.85) presented statistical difference to the other solutions. The SEM micrographs showed a rougher surface in Group APF. The 1.23% APF gel promoted major surface roughness and bacterial adhesion and could be inadequate for the use of patients with lithium disilicate ceramic restorations. Clinical significance: The Fluorine solution can affect the lithium disilicate ceramics, generating a rough and non-esthetic surface. This altered surface could be susceptible to bacterial adhesion, being directly related with periodontal health, the longevity of the restoration and the success of the rehabilitation.

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Section: Discussionmentioning

confidence: 99%

Bacterial Adhesion on Lithium Disilicate Ceramic Surface Exposed to Different Hydrofluoric Solutions

et al. 2018

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“…16,26 However, there have also been several reports indicating that the nanotubular surfaces increased bacterial adhesion compared with conventional and nanorough surfaces due to the presence of fluorine and amorphous crystallinity. 30,31 Therefore, it is of great importance to evaluate the in vivo anti-infection effect and reliability of the drug-loaded nanotube coating. In addition, implant-related infection model in rats, which could be used to simulate the tibia or femur implant-related intramedullary infection in clinics, have been widely used to verify the treatment effect of implant with antibacterial properties in vivo.…”

Section: Introductionmentioning

confidence: 99%

In vivo evaluation of the anti-infection potential of gentamicin-loaded nanotubes on titania implants

Yang

et al. 2016

IJN

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Titanium-based implants have been widely used in orthopedic surgery; however, failures still occur. Our in vitro study has demonstrated that gentamicin-loaded, 80 nm-diameter nanotubes possessed both antibacterial and osteogenic activities. Thus, the aim of this study was to further investigate the in vivo anti-infection effect of the titanium implants with gentamicin-loaded nanotubes. Thirty-six male Sprague Dawley rats were used to establish an implant-associated infection model. A volume of 50 μL Staphylococcus aureus suspension (1×10 5 CFU/mL) was injected into the medullary cavity of the left femur, and then the titanium rods without modification (Ti), titanium nanotubes without drug loading (NT), and gentamicin-loaded titanium nanotubes (NT-G) were inserted with phosphate-buffered saline-inoculated Ti rods as a blank control. X-ray images were obtained 1 day, 21 days, and 42 days after surgery; micro-computed tomography, microbiological, and histopathological analyses were used to evaluate the infections at the time of sacrifice. Radiographic signs of bone infection, including osteolysis, periosteal reaction, osteosclerosis, and damaged articular surfaces, were demonstrated in the infected Ti group and were slightly alleviated in the NT group but not observed in the NT-G group. Meanwhile, the radiographic and gross bone pathological scores of the NT-G group were significantly lower than those of the infected Ti group ( P <0.01). Explant cultures revealed significantly less bacterial growth in the NT-G group than in the Ti and NT groups ( P <0.01), and the NT group showed decreased live bacterial growth compared with the Ti group ( P <0.01). Confocal laser scanning microscopy, scanning electron microscopy, and histopathological observations further confirmed decreased bacterial burden in the NT-G group compared with the Ti and NT groups. We concluded that the NT-G coatings can significantly prevent the development of implant-associated infections in a rat model; therefore, they may provide an effective drug-loading strategy to combat implant-associated infections in clinic.

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“…It is generally believed that metal corrosion in the mouth includes chemical corrosion and electrochemical corrosion [6]. There are three forms of electrochemical corrosion: microbiological corrosion, galvanic corrosion and stress corrosion cracking.…”

Section: Introductionmentioning

confidence: 99%

Reciprocal interaction between dental alloy biocorrosion and Streptococcus mutans virulent gene expression

Zhang

Qiu

Ren

et al. 2016

J Mater Sci: Mater Med

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Corrosion of dental alloys is a major concern in dental restorations. Streptococcus mutans reduces the pH in oral cavity and induces demineralization of the enamel as well as corrosion of restorative dental materials. The rough surfaces of dental alloys induced by corrosion enhance the subsequent accumulation of plaque. In this study, the corrosion process of nickel-chromium (Ni-Cr) and cobalt-chromium (Co-Cr) alloys in a nutrient-rich medium containing S. mutans was studied using inductively coupled plasma atomic emission spectrometry (ICP-AES), X-ray photoelectron spectroscopy (XPS) and electrochemical corrosion test. Our results showed that the release of Ni and Co ions increased, particularly after incubation for 3 days. The electrochemical corrosion results showed a significant decrease in the corrosion resistance (Rp) value after the alloys were immersed in the media containing S. mutans for 3 days. Correspondingly, XPS revealed a reduction in the relative dominance of Ni, Co, and Cr in the surface oxides after the alloys were immersed in the S. mutans culture. After removal of the biofilm, the pre-corroded alloys were re-incubated in S. mutans medium, and the expressions of genes associated with the adhesion and acidogenesis of S. mutans, including gtfBCD, gbpB, fif and ldh, were evaluated by detecting the mRNA levels using real-time reverse transcription polymerase chain reaction (RT-PCR). We found that the gtfBCD, gbpB, ftf and Idh expression of S. mutans were noticeably increased after incubation with pre-corroded alloys for 24 h. This study demonstrated that S. mutans enhanced the corrosion behavior of the dental alloys, on the other hand, the presence of corroded alloy surfaces up-regulated the virulent gene expression in S. mutans. Compared with smooth surfaces, the rough corroded surfaces of dental alloys accelerated the bacteria-adhesion and corrosion process by changing the virulence gene expression of S. mutans.

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Fatigue and Fluoride Corrosion on Streptococcus mutans Adherence to Titanium‐Based Implant/Component Surfaces

Abstract: The process of corrosion by fluoride ions on Cp Ti implant/component sets allowed greater S. mutans adherence than in the absence of corrosion and with the fatigue process in isolation.

Cited by 43 publications

References 19 publications

Bacterial Adhesion on Lithium Disilicate Ceramic Surface Exposed to Different Hydrofluoric Solutions

Bacterial Adhesion on Lithium Disilicate Ceramic Surface Exposed to Different Hydrofluoric Solutions

In vivo evaluation of the anti-infection potential of gentamicin-loaded nanotubes on titania implants

Reciprocal interaction between dental alloy biocorrosion and Streptococcus mutans virulent gene expression

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