Evaluation of Staphylococcus aureus and Candida albicans biofilms adherence to PEEK and titanium-alloy prosthetic spine devices

Rocha, Luiz Gustavo Dal Oglio da; Ribeiro, Victoria Stadler Tasca; Andrade, Ana Paula de; Gonçalves, Geiziane Aparecida; Kraft, Letícia; Cieslinski, Juliette; Suss, Paula Hansen; Tuon, Felipe Francisco

doi:10.1007/s00590-021-03069-y

Cited by 13 publications

(9 citation statements)

References 31 publications

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“…The PEEK surfaces were significantly rougher than the cp-Ti and Ti6Al4V surfaces. The bacterial retention values for Streptococcus sanguinis were significantly higher on PEEK surfaces as compared to Ti6Al4V, which is in accordance with the study investigated by da Rocha et al [ 35 ]. It was apparently indicated that Streptococcus aureus and Candida albicans adhesion were more likely to occur on PEEK surfaces than on titanium surfaces.…”

Section: Characteristics Of Peek and Its Composite Materialssupporting

confidence: 91%

“…The characteristics of the materials employed for use in removable prostheses must be resistant to microbial colonization [ 35 ]. Chemical composition, surface-free energy, and surface roughness have the potential to affect bacterial adherence [ 36 ].…”

Section: Characteristics Of Peek and Its Composite Materialsmentioning

confidence: 99%

“…An in vitro study evaluated Candida albicans biofilm formation on the surface of PEEK and titanium. The planktonic yeast cell counts in PEEK were comparable to those in titanium alloy samples; however, the sessile yeast cell counts in titanium alloys were lower than those in PEEK ( p < 0.05) [ 35 ].…”

Section: Characteristics Of Peek and Its Composite Materialsmentioning

confidence: 99%

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Clinical Applications of Polyetheretherketone in Removable Dental Prostheses: Accuracy, Characteristics, and Performance

et al. 2022

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The high-performance thermoplastic polyetheretherketone (PEEK) has excellent mechanical properties, biocompatibility, chemical stability, and radiolucency. The present article comprehensively reviews various applications of PEEK in removable dental prostheses, including in removable partial dentures (RPDs) (frameworks and clasps), double-crown RPDs, and obturators. The clinical performance of PEEK in removable dental prostheses is shown to be satisfactory and promising based on the short-term clinical evidence and technical complications are scarce. Moreover, the accuracy of RPDs is a vital factor for their long-term success rate. PEEK in removable dental prostheses is fabricated using the conventional lost-wax technique and CAD/CAM milling, which produces a good fit. Furthermore, fused deposition modeling is considered to be one of the most practical additive techniques. PEEK in removable prostheses produced by this technique exhibits good results in terms of the framework fit. However, in light of the paucity of evidence regarding other additive techniques, these manufacturers cannot yet be endorsed. Surface roughness, bacterial retention, color stability, and wear resistance should also be considered when attempting to increase the survival rates of PEEK removable prostheses. In addition, pastes represent an effective method for PEEK polishing to obtain a reduced surface roughness, which facilitates lower bacterial retention. As compared to other composite materials, PEEK is less likely to become discolored or deteriorate due to wear abrasion.

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Section: Characteristics Of Peek and Its Composite Materialssupporting

confidence: 91%

Section: Characteristics Of Peek and Its Composite Materialsmentioning

confidence: 99%

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Clinical Applications of Polyetheretherketone in Removable Dental Prostheses: Accuracy, Characteristics, and Performance

et al. 2022

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“…Subsequently, the tubes were closed and sonicated at 40 kHz for 30 minutes. The 100 mcL of aliquot was plated at 6log 10 , 4log 10 , 2log 10 , and neat dilutions to estimate colony counts 12 . For dry biofilm analysis, the remaining liquid was filtered through a 0.22 mm membrane 13 .…”

Section: Post-use Studymentioning

confidence: 99%

Antiseptic-impregnated tracheostomy tube for the prevention of ventilator-associated pneumonia caused by multidrug-resistant bacteria: in-vitro and pilot study in humans

Gasparetto

Jurkonis

Dantas

et al. 2022

Preprint

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Background: Ventilator-associated pneumonia (VAP) is one of the most common causes of nosocomial infections and is associated with prolonged hospitalization, increased health care costs, and high mortality of critically ill patients during hospitalization in intensive care units (ICUs). Objective: To characterize and evaluate in vitro and in vivo antimicrobial and anti-biofilm activity of an in-house tracheostomy tube impregnated with chlorhexidine and violet crystal. Methods: The tracheostomy tubes were tested in vitro for their ability to prevent biofilm formation by standard strains of S. aureus, P. aeruginosa, and E. coli, and multidrug-resistant bacteria obtained from clinical cultures: Meticillin-resistant S. aureus (MRSA), and carbapenem-resistant Acinetobacter baumannii, Pseudomonas aeruginosa and Klebsiella pneumoniae. Results: The impregnated tracheostomy tubes demonstrated antimicrobial activity, including for multidrug-resistant bacteria. In this pilot study, 14 patients were evaluated, seven in the chlorhexidine and violet crystal-coated group and seven in the control group. During ventilation, VAP occurred in one patient in the coated group and in three patients in the control group (p=0.28). The biomass in the impregnated tubes did not differ from the control group and no difference was found in the production of sessile cells by the quantitative method, with a median of 15.50 cfu/mL (IQR25-75% 12.00-196.50) and 168.00 cfu/mL ((IQR25-75% 78.50-250.00), respectively. Conclusion: This study provides preliminary evidence to support that antiseptic impregnation of tracheostomy tube provides significant antimicrobial activity.

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“…PEEK is frequently utilized in applications such as implants, 28 dental materials, 29 orthopedic devices, 30 biocompatible materials, 31 endoscopy instruments, 32 and diagnostic devices. 33 Polylactic acid (PLA) is derived from natural resources and is classified as a thermoplastic polymer. PLA possesses remarkable characteristics including renewability, sustainability, and biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

Prediction of friction coefficient and torque in self-lubricating polymer radial bearings produced by additive manufacturing: A machine learning approach

Baş,

Karabacak

2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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Additive manufacturing is a rapidly developing technology that enables the production of complex parts with intricate geometries. Self-lubricating radial bearings are one of the machine elements that can be produced using additive manufacturing. In this research, we present a machine learning-based approach to model the friction coefficient and friction torque in self-lubricating radial bearings manufactured by additive manufacturing using polyether ether ketone (PEEK), polylactic acid (PLA), acrylonitrile butadiene styrene (ABS), and nylon. The proposed approach includes different machine learning models (artificial neural networks, support vector machines, regression trees, linear regression models) that utilize experimental data to predict the coefficient of friction and friction torque of different types of radial bearings. Experimental data were obtained by performing tribological tests on self-lubricating radial bearings under various operating conditions. The results reveal that the machine learning models are successful in predicting the friction coefficient and friction torque in self-lubricating radial bearings with high accuracy. The approach can be utilized to optimize the design and performance of self-lubricating radial bearings manufactured using additive manufacturing.

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Evaluation of Staphylococcus aureus and Candida albicans biofilms adherence to PEEK and titanium-alloy prosthetic spine devices

Cited by 13 publications

References 31 publications

Clinical Applications of Polyetheretherketone in Removable Dental Prostheses: Accuracy, Characteristics, and Performance

Clinical Applications of Polyetheretherketone in Removable Dental Prostheses: Accuracy, Characteristics, and Performance

Antiseptic-impregnated tracheostomy tube for the prevention of ventilator-associated pneumonia caused by multidrug-resistant bacteria: in-vitro and pilot study in humans

Prediction of friction coefficient and torque in self-lubricating polymer radial bearings produced by additive manufacturing: A machine learning approach

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