Surface Properties of Dental Materials and Biofilm Formation

2021 ◽  
pp. 55-69
Author(s):  
Ralf Bürgers ◽  
Sebastian Krohn ◽  
Torsten Wassmann
Keyword(s):  
Surface Properties ◽  
Biofilm Formation ◽  
Dental Materials

scholarly journals Effects of ionizing radiation on surface properties of current restorative dental materials

2021 ◽  
Vol 32 (6) ◽  
Author(s):  
Débora Michelle Gonçalves de Amorim ◽  
Aretha Heitor Veríssimo ◽  
Anne Kaline Claudino Ribeiro ◽  
Rodrigo Othávio de Assunção e Souza ◽  
Isauremi Vieira de Assunção ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Surface Properties ◽  
Resin Composite ◽  
Dental Materials ◽  
Glass Ionomer Cement ◽  
Contact Angles ◽  
Glass Ionomer ◽  
Post Radiation ◽  
Restorative Dental Materials ◽  
Ionomer Cement

AbstractTo investigate the impact of radiotherapy on surface properties of restorative dental materials. A conventional resin composite—CRC (Aura Enamel), a bulk-fill resin composite—BFRC (Aura Bulk-fill), a conventional glass ionomer cement—CGIC (Riva self cure), and a resin-modified glass ionomer cement—RMGIC (Riva light cure) were tested. Forty disc-shaped samples from each material (8 mm diameter × 2 mm thickness) (n = 10) were produced according to manufacturer directions and then stored in water distilled for 24 h. Surface wettability (water contact angle), Vickers microhardness, and micromorphology through scanning electron microscopy (SEM) before and after exposition to ionizing radiation (60 Gy) were obtained. The data were statistically evaluated using the two-way ANOVA and Tukey posthoc test (p < 0.05). Baseline and post-radiation values of contact angles were statistically similar for CRC, BFRC, and RMGIC, whilst post-radiation values of contact angles were statistically lower than baseline ones for CGIC. Exposition to ionizing radiation statistically increased the microhardness of CRC, and statistically decreased the microhardness of CGIC. The surface micromorphology of all materials was changed post-radiation. Exposure to ionizing radiation negatively affected the conventional glass ionomer tested, while did not alter or improved surface properties testing of the resin composites and the resin-modified glass ionomer cement tested.

scholarly journals Surface Properties of Resin Composite Materials Relative to Biofilm Formation

2007 ◽  
Vol 26 (5) ◽  
pp. 613-622 ◽  
Author(s):  
Masahiro ONO ◽  
Toru NIKAIDO ◽  
Masaomi IKEDA ◽  
Susumu IMAI ◽  
Nobuhiro HANADA ◽  
...  
Keyword(s):  
Composite Materials ◽  
Surface Properties ◽  
Biofilm Formation ◽  
Resin Composite

Biofilm Formation on Implants and Prosthetic Dental Materials

2016 ◽  
pp. 991-1027
Author(s):  
Lia Rimondini ◽  
Andrea Cochis ◽  
Elena Varoni ◽  
Barbara Azzimonti ◽  
Antonio Carrassi
Keyword(s):  
Biofilm Formation ◽  
Dental Materials

scholarly journals Predictability of Microbial Adhesion to Dental Materials by Roughness Parameters

Coatings ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 456 ◽  
Author(s):  
Andrea Schubert ◽  
Torsten Wassmann ◽  
Mareike Holtappels ◽  
Oliver Kurbad ◽  
Sebastian Krohn ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Titanium Alloy ◽  
Biofilm Formation ◽  
Dental Materials ◽  
Roughness Parameter ◽  
In Vitro Study ◽  
Mean Deviation ◽  
Roughness Parameters ◽  
Microbial Adhesion

Microbial adhesion to intraoral biomaterials is associated with surface roughness. For the prevention of oral pathologies, smooth surfaces with little biofilm formation are required. Ideally, appropriate roughness parameters make microbial adhesion predictable. Although a multitude of parameters are available, surface roughness is commonly described by the arithmetical mean roughness value (Ra). The present study investigates whether Ra is the most appropriate roughness parameter in terms of prediction for microbial adhesion to dental biomaterials. After four surface roughness modifications using standardized polishing protocols, zirconia, polymethylmethacrylate, polyetheretherketone, and titanium alloy specimens were characterized by Ra as well as 17 other parameters using confocal microscopy. Specimens of the tested materials were colonized by C. albicans or S. sanguinis for 2 h; the adhesion was measured via luminescence assays and correlated with the roughness parameters. The adhesion of C. albicans showed a tendency to increase with increasing the surface roughness—the adhesion of S. sanguinis showed no such tendency. Although Sa, that is, the arithmetical mean deviation of surface roughness, and Rdc, that is, the profile section height between two material ratios, showed higher correlations with the microbial adhesion than Ra, these differences were not significant. Within the limitations of this in-vitro study, we conclude that Ra is a sufficient roughness parameter in terms of prediction for initial microbial adhesion to dental biomaterials with polished surfaces.

scholarly journals A multivariate approach to correlate bacterial surface properties to biofilm formation by lipopolysaccharide mutants of Pseudomonas aeruginosa

2015 ◽  
Vol 127 ◽  
pp. 182-191 ◽  
Author(s):  
Rohit Ruhal ◽  
Henrik Antti ◽  
Olena Rzhepishevska ◽  
Nicolas Boulanger ◽  
David R. Barbero ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Surface Properties ◽  
Biofilm Formation ◽  
Multivariate Approach ◽  
Bacterial Surface

scholarly journals Surface Properties and Mechanical Performance of Ti-Based Dental Materials: Comparative Effect of Valve Alloying Elements and Structural Defects

2021 ◽  
Author(s):  
Agata Sotniczuk ◽  
Kamil Majchrowicz ◽  
Donata Kuczyńska-Zemła ◽  
Marcin Pisarek ◽  
Bogusława Adamczyk-Cieślak ◽  
...  
Keyword(s):  
Oxide Layer ◽  
Surface Properties ◽  
Mechanical Performance ◽  
Dental Materials ◽  
Alloying Elements ◽  
Structural Defects ◽  
Native Oxide ◽  
Oral Environment ◽  
Industrial Level ◽  
Zr Alloy

AbstractTwo approaches can be taken when designing properties of the native oxide layers formed on Ti-based biomedical materials: (i) changing the chemical composition of the substrate by adding biocompatible, valve alloying elements, and (ii) changing the microstructure of the substrate—especially its level of defectiveness—through large plastic deformation. However, especially in the aggressive fluoridated oral environment, it is still unknown what factor is more effective in terms of enhancing oxide layer protectiveness against biocorrosion: (i) the presence of valve alloying elements, or (ii) a high number of structural defects. To gain knowledge about the separate influence of both of these factors, surface properties were examined for commercially pure Ti and Ti–Nb–Ta–Zr alloy in microcrystalline state as well as after multiple-pass cold rolling, a process that can be readily scaled up to the industrial level. This study showed that while valve-alloying elements and structural defects individually have a beneficial effect on Ti oxide layer properties in fluoridated medium, they not have to act in a synergistic manner. These findings have to be taken into account when designing future Ti-based dental materials together with analyzing their mechanical performance with respect to mechanical strength and elastic properties.

scholarly journals Effect of two cosmetic compounds on the growth, biofilm formation activity, and surface properties of acneic strains of Cutibacterium acnes and Staphylococcus aureus

2018 ◽  
Vol 8 (3) ◽  
pp. e00659 ◽  
Author(s):  
Andrei V. Gannesen ◽  
Valerie Borrel ◽  
Luc Lefeuvre ◽  
Alexander I. Netrusov ◽  
Vladimir K. Plakunov ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Surface Properties ◽  
Biofilm Formation ◽  
Cutibacterium Acnes ◽  
And Staphylococcus Aureus

scholarly journals Inactivation of the ftsH gene of Lactobacillus plantarum WCFS1: Effects on growth, stress tolerance, cell surface properties and biofilm formation

2012 ◽  
Vol 167 (4) ◽  
pp. 187-193 ◽  
Author(s):  
Pasquale Bove ◽  
Vittorio Capozzi ◽  
Carmela Garofalo ◽  
Aurelie Rieu ◽  
Giuseppe Spano ◽  
...  
Keyword(s):  
Cell Surface ◽  
Stress Tolerance ◽  
Lactobacillus Plantarum ◽  
Surface Properties ◽  
Biofilm Formation ◽  
Growth Stress ◽  
Cell Surface Properties

SubMICs of penicillin and erythromycin enhance biofilm formation and hydrophobicity of Corynebacterium diphtheriae strains

2013 ◽  
Vol 62 (5) ◽  
pp. 754-760 ◽  
Author(s):  
D. L. R. Gomes ◽  
R. S. Peixoto ◽  
E. A. B. Barbosa ◽  
F. Napoleão ◽  
P. S. Sabbadini ◽  
...  
Keyword(s):  
Cell Surface ◽  
Surface Properties ◽  
Biofilm Formation ◽  
Antimicrobial Agents ◽  
Cell Surface Hydrophobicity ◽  
Surface Hydrophobicity ◽  
Corynebacterium Diphtheriae ◽  
Surface Charges ◽  
Bacterial Surface ◽  
Bacterial Morphology

Subinhibitory concentrations (subMICs) of antibiotics may alter bacterial surface properties and change microbial physiology. This study aimed to investigate the effect of a subMIC (⅛ MIC) of penicillin (PEN) and erythromycin (ERY) on bacterial morphology, haemagglutinating activity, cell-surface hydrophobicity (CSH) and biofilm formation on glass and polystyrene surfaces, as well as the distribution of cell-surface acidic anionic residues of Corynebacterium diphtheriae strains (HC01 tox − strain; CDC-E8392 and 241 tox + strains). All micro-organisms tested were susceptible to PEN and ERY. Growth in the presence of PEN induced bacterial filamentation, whereas subMIC of ERY caused cell-size reduction of strains 241 and CDC-E8392. Adherence to human erythrocytes was reduced after growth in the presence of ERY, while CSH was increased by a subMIC of both antibiotics in bacterial adherence to n-hexadecane assays. Conversely, antibiotic inhibition of biofilm formation was not observed. All strains enhanced biofilm formation on glass after treatment with ERY, while only strain 241 increased glass adherence after cultivation in the presence of PEN. Biofilm production on polystyrene surfaces was improved by ⅛ MIC of ERY. After growth in the presence of both antimicrobial agents, strains 241 and CDC-E8392 exhibited anionic surface charges with focal distribution. In conclusion, subMICs of PEN and ERY modified bacterial surface properties and enhanced not only biofilm formation but also cell-surface hydrophobicity. Antibiotic-induced biofilm formation may contribute to the inconsistent success of antimicrobial therapy for C. diphtheriae infections.

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