The influence of implant surface roughness on decontamination by antimicrobial photodynamic therapy and chemical agents: A preliminary study in vitro

Balderrama, Ísis de Fátima; Stuani, Vitor de Toledo; Cardoso, Matheus Völz; Oliveira, Rodrigo Cardoso de; Lopes, Marcelo Milanda Ribeiro; Greghi, Sebastião Luiz Aguiar; Passanezi, Sant’Ana Adriana Campos

doi:10.1016/j.pdpdt.2020.102105

Cited by 7 publications

(5 citation statements)

References 52 publications

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“…Metal instruments and ultrasonic scalers with or without local antiseptic therapy can increase the surface roughness of implants, and non-metallic curettes do not provide effective removal of the microbial plaque. Chemical agents do not allow complete removal of bacterial contamination and may contaminate the implant surface with different chemical agents [9]. Diode lasers with different wavelengths have been effective in decontaminating implants and inhibiting lipopolysaccharide (LPS)-induced macrophage activation and consequent attenuation of the inflammatory response.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Dual-Wavelength Laser Irradiation against Implant-Adherent Biofilms of Staphylococcus aureus, Escherichia coli, and Candida albicans for Improved Antimicrobial Photodynamic Therapy

Afrasiabi,

Benedicenti,

Signore

et al. 2024

Bioengineering

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The efficiency of antimicrobial photodynamic therapy (PDT) might be improved by using multiple wavelengths. This study investigates the sensitivity of implant-adherent biofilms of Staphylococcus aureus, Escherichia coli, and Candida albicans to indocyanine green (ICG)-808 nm diode laser, toluidine blue O (TBO)-635 nm diode laser, and hydrogen peroxide (HP)-980 nm diode laser and their combination when irradiated with dual-wavelength laser irradiation (simultaneously 980–635 nm or 980–808 nm). After an incubation period of 72 h, the infected implants were randomly divided into seven different treatment modalities: Control, HP, HP-PDT, TBO-PDT, HP-TBO-PDT, ICG-PDT, and HP-ICG-PDT. After the treatments, the colony-forming units (CFUs)/mL and reactive oxygen species (ROS) generation were determined. All evaluated disinfection methods were significantly effective against the three investigated bacteria compared to the control. The combined treatment of HP-ICG-PDT or HP-TBO-PDT had the greatest antibacterial effect compared to each treatment alone. There were statistical differences between HP-ICG-PDT and ICG-PDT or HP-TBO-PDT and TBO-PDT for all three bacteria studied. PDT with simultaneous dual-wavelength laser irradiation is an efficient strategy to improve the therapeutic effect of PDT.

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Section: Introductionmentioning

confidence: 99%

Simultaneous Dual-Wavelength Laser Irradiation against Implant-Adherent Biofilms of Staphylococcus aureus, Escherichia coli, and Candida albicans for Improved Antimicrobial Photodynamic Therapy

Afrasiabi,

Benedicenti,

Signore

et al. 2024

Bioengineering

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“… 35 Surface parameters obtained were R q (root mean square deviation), R a (arithmetic mean deviation), R sk (skewness), and R ku (kurtosis). 36 Data was obtained by analyzing a 5 μm × 5 μm area from the surface of each gel type. Both the rms surface roughness, R q , and arithmetic surface roughness, R a, values of the gels were quite similar, within the range of ∼ 20–25 nm ( Figure 5 ; Table 2 ).…”

Section: Resultsmentioning

confidence: 99%

“…Surface roughness was analyzed in NanoScope Analysis which measured the roughness parameters . Surface parameters obtained were R q (root mean square deviation), R a (arithmetic mean deviation), R sk (skewness), and R ku (kurtosis) . Data was obtained by analyzing a 5 μm × 5 μm area from the surface of each gel type.…”

Section: Resultsmentioning

confidence: 99%

Additive Manufacturing of Viscoelastic Polyacrylamide Substrates for Mechanosensing Studies

et al. 2022

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“…The coatings used on the Ni-Cr metal surface are characterized by a smoother surface compared to surfaces without silicon carbonitride layers. The observed differences may be important in medical and dental applications [46][47][48][49][50].…”

Section: Surface Roughnessmentioning

confidence: 99%

“…To achieve implant success, the following factors must be taken into account: implant design, implant material, implant surface, and bone quality. In assessing the osseointegration properties of surfaces, topography, chemistry, charge, and wettability are important [50,51]. Bacterial adhesion is influenced by the roughness of the implant surface and its chemical and physical properties, which is why it is so important to maintain this parameter in the context of dental and medical implants [51][52][53].…”

Section: Surface Roughnessmentioning

confidence: 99%

Characteristics of Si (C,N) Silicon Carbonitride Layers on the Surface of Ni–Cr Alloys Used in Dental Prosthetics

Klimek,

Makówka,

Sobczyk-Guzenda

et al. 2024

Materials

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Chromium- and cobalt-based alloys, as well as chrome–nickel steels, are most used in dental prosthetics. Unfortunately, these alloys, especially nickel-based alloys, can cause allergic reactions. A disadvantage of these alloys is also insufficient corrosion resistance. To improve the properties of these alloys, amorphous Si (C,N) coatings were deposited on the surfaces of metal specimens. This paper characterizes coatings of silicon carbide nitrides, deposited by the magnetron sputtering method on the surface of nickel–chromium alloys used in dental prosthetics. Depending on the deposition parameters, coatings with varying carbon to nitrogen ratios were obtained. The study analyzed their structure and chemical and phase composition. In addition, a study of surface wettability and surface roughness was performed. Based on the results obtained, it was found that amorphous coatings of Si (C,N) type with thicknesses of 2 to 4.5 µm were obtained. All obtained coatings increase the value of surface free energy. The study showed that Si (C,N)-type films can be used in dental prosthetics as protective coatings.

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The influence of implant surface roughness on decontamination by antimicrobial photodynamic therapy and chemical agents: A preliminary study in vitro

Cited by 7 publications

References 52 publications

Simultaneous Dual-Wavelength Laser Irradiation against Implant-Adherent Biofilms of Staphylococcus aureus, Escherichia coli, and Candida albicans for Improved Antimicrobial Photodynamic Therapy

Simultaneous Dual-Wavelength Laser Irradiation against Implant-Adherent Biofilms of Staphylococcus aureus, Escherichia coli, and Candida albicans for Improved Antimicrobial Photodynamic Therapy

Additive Manufacturing of Viscoelastic Polyacrylamide Substrates for Mechanosensing Studies

Characteristics of Si (C,N) Silicon Carbonitride Layers on the Surface of Ni–Cr Alloys Used in Dental Prosthetics

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