Synthesis of TiO2 nanotubes with ZnO nanoparticles to achieve antibacterial properties and stem cell compatibility

Nanoscale ◽  
2014 ◽  
Vol 6 (15) ◽  
pp. 9050-9062 ◽  
Author(s):  
Wenwen Liu ◽  
Penglei Su ◽  
Su Chen ◽  
Na Wang ◽  
Yuanping Ma ◽  
...  
Keyword(s):  
Stem Cell ◽  
Streptococcus Mutans ◽  
Zno Nanoparticles ◽  
Bacterial Adhesion ◽  
Tio2 Nanotubes ◽  
Antibacterial Properties ◽  
Cell Compatibility

ZnO incorporated Ti samples inhibited the expression of Streptococcus mutans bacterial adhesion genes and also inhibited P. gingivalis proliferation. (a) S. mutans and (b) P. gingivalis on the sample of TNT–Zn0.075.

scholarly journals A Concise Review of Silver Diamine Fluoride on Oral Biofilm

2021 ◽  
Vol 11 (7) ◽  
pp. 3232
Author(s):  
Jingyang Zhang ◽  
Sofiya-Roksolana Got ◽  
Iris Xiaoxue Yin ◽  
Edward Chin-Man Lo ◽  
Chun-Hung Chu
Keyword(s):  
Clinical Study ◽  
Streptococcus Mutans ◽  
Bacterial Adhesion ◽  
Clinical Studies ◽  
Antibacterial Properties ◽  
Tooth Surface ◽  
Original Research ◽  
Laboratory Studies ◽  
Oral Biofilm ◽  
Silver Diamine Fluoride

Studies have shown that silver diamine fluoride (SDF) is an effective agent to arrest and prevent dental caries due to its mineralizing and antibacterial properties. While plenty of studies have investigated the mineralizing properties, there are few papers that have examined its antibacterial effect on oral biofilm. The objective of this study was to identify the effect of silver diamine fluoride on oral biofilm. Method: The keywords used were (silver diamine fluoride OR silver diammine fluoride OR SDF OR silver fluoride OR AgF AND biofilm OR plaque). Two reviewers screened the titles and abstracts and then retrieved the full text of the potentially eligible publications. Publications of original research investigating the effect of SDF on oral biofilm were selected for this review. Results: This review included 15 laboratory studies and six clinical studies among the 540 papers identified. The laboratory studies found that SDF could prevent bacterial adhesion to the tooth surface. SDF also inhibited the growth of cariogenic bacteria, including Streptococcus mutans, Lactobacillus acidophilus, Streptococcus sobrinus, Lactobacillus rhamnosus, Actinomyces naeslundii, and Enterococcus faecalis, thus contributing to its success in caries arrest. One clinical study reported a decrease in Streptococcus mutans and Lactobacillus sp. in arrested caries after SDF treatment, and another clinical study found that SDF inhibited the growth of periodontitis microbiota, including Porphyromonas gingivalis, Tannerella forsythia, and Prevotella intermedia/nigrescens. However, three clinical studies reported no significant change in the microbial diversity of the plaque on the tooth after SDF treatment. Moreover, one laboratory study and one clinical research study reported that SDF inhibited the growth of Candida albicans. Conclusion: Not many research studies have investigated the effects of SDF on oral biofilm, although SDF has been used as a caries-arresting agent with antibacterial properties. However, a few publications have reported that SDF prevented bacterial adhesion to the teeth, inhibited the growth of cariogenic and periodontal bacteria, and possessed antifungal properties.

Preparation of polycrystalline ZnO nanoparticles loaded onto graphene oxide and their antibacterial properties

2021 ◽  
pp. 102531
Author(s):  
Xin Zhang ◽  
Huanxian Shi ◽  
Enzhou Liu ◽  
Xiaoyun Hu ◽  
Ke Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Zno Nanoparticles ◽  
Antibacterial Properties

Evaluation of Antibacterial and Antifungal Properties of ZnO and Silver Nanoparticles against Candida Albicans and Streptococcus Mutans in Acrylic Resin

2021 ◽  
Author(s):  
Amin Khaleghi ◽  
Amin Archin ◽  
Mojtaba Azarian Borujeni
Keyword(s):  
Candida Albicans ◽  
Streptococcus Mutans ◽  
Zno Nanoparticles ◽  
Acrylic Resin ◽  
Spherical Particles ◽  
Significance Level ◽  
Ultrasonic Apparatus ◽  
Experimental Laboratory ◽  
Antibacterial And Antifungal ◽  
Post Hoc

Introduction: This study aimed to evaluate the antibacterial and antifungal effect of Ag and zinc oxide nanoparticles to complete denture acrylic resin. Materials & Methods: In this experimental laboratory study, 144 samples were evaluated. The powder of acrylic resin (PMMA Ivoclar Vivadent, Lichenstein SR Triplex Hot) was mixed homogeneously in the ultrasonic apparatus with Ag (purity: 99.99%, size: 20nm, spherical) and ZnO (purity: 99%, size: 10-30 nm, nearly spherical) particles with mass fraction 0.5, 1 ,2 and 5. The microorganisms of this study were Candida albicans and Streptococcus mutans. The growth rate of microorganisms was measured by spectrophotometer based on turbidity and readings at 600 nm. Data were analyzed by ANOVA and Tukey post hoc tests. The significance level was set at 0.05. Results: Increasing Ag and ZnO nanoparticles to acrylic resin reduced the growth of Candida Albicans and Streptococcus Mutans. Even the concentration of 0.5% significantly reduced the growth of microorganisms. Complete growth inhibition was in the concentration of 5% after 24 and 48 hours. Conclusion: Increasing the Ag and ZnO nanoparticles to acrylic resin reduced the growth of microorganisms.

scholarly journals Antibacterial activity of zinc oxide nanoparticles obtained by pulsed laser ablation in water and air

2018 ◽  
Vol 243 ◽  
pp. 00017 ◽  
Author(s):  
Daria Goncharova ◽  
Ekaterina Gavrilenko ◽  
Anna Nemoykina ◽  
Valery Svetlichnyi
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Antibacterial Activity ◽  
Laser Ablation ◽  
Zno Nanoparticles ◽  
Antibacterial Properties ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Composition And Structure ◽  
Scanning Electron

The paper studies physicochemical and antibacterial properties of ZnO nanoparticles obtained by pulsed laser ablation in water and air. Their composition and structure were studied by X-ray diffraction, transmission and scanning electron microscopy. Antibacterial activity of the nanoparticles was examined by its affection on Gram-positive Staphylococcus aureus (S.aureus). The dependence of nanoparticles’ physical and chemical antibacterial properties on the conditions of the ablation was shown. The model materials for the antibacterial bandage were made of cotton, filter paper and biodegradable polymer scaffolds (poly-l-lactide acid), and then they were coated with the obtained ZnO nanoparticles. The model bandage materials were examined by the scanning electron microscopy method and their antibacterial activity (ISO 20743:2013) was determined. High activity of all the samples against S.aureus was proved.

scholarly journals Casein phosphopeptide acts synergistically with fluoride to inhibit initial adhesion of Streptococcus mutans to the saliva-coated hydroxyapatite disc

2020 ◽  
Author(s):  
Xiaodie Wang ◽  
Limin Liu ◽  
Xiaoyan Zhou ◽  
Yongbiao Huo ◽  
Jinlong Gao ◽  
...  
Keyword(s):  
Contact Angle ◽  
Zeta Potential ◽  
Streptococcus Mutans ◽  
Water Contact Angle ◽  
Bacterial Adhesion ◽  
Laser Scanning Microscopy ◽  
Water Contact ◽  
Initial Adhesion ◽  
Salivary Pellicle ◽  
Casein Phosphopeptide

Abstract Background Recent preventive strategies for dental caries focus on targeting the mechanisms underlying biofilm formation, including inhibiting bacterial adhesion. A promising approach to prevent bacterial adhesion is to modify the composition of acquired salivary pellicle. This in vitro study investigated the effect and possible underlying mechanism of pellicle modification by casein phosphopeptide (CPP) on Streptococcus mutans (S. mutans) initial adhesion, and the impact of fluoride on the efficacy of CPP.Methods The salivary pellicle-coated hydroxyapatite (s-HA) disc was modified by 2.5% CPP or 2.5% CPP supplemented with 900 ppm fluoride solutions. After cultivation of S. mutans, the adherent bacteria were visualized by scanning electron microscopy (SEM) and quantitatively evaluated using the plate count method. Confocal laser scanning microscopy (CLSM) was used to evaluate the proportions of total and dead S. mutans. The concentrations of total, free, and bound calcium and fluoride in CPP and fluoride-doped CPP solutions were determined. The water contact angle and zeta potential of s-HA with and without modification were measured. The data were statistically analyzed using one-way ANOVA followed by a Turkey post hoc multiple comparison test.Results Initial adhesion of S. mutans to s-HA was inhibited in response to pellicle modification by CPP and fluoride-doped CPP, and the latter was more efficient. CLSM analysis showed that the proportion of dead S. mutans did not differ between the groups. Water contact angle and zeta potential decreased after pellicle modification, and both were lowest in the fluoride-doped CPP group.Conclusions Pellicle modification by CPP inhibited S. mutans initial adhesion to s-HA, possibly by reducing hydrophobicity and negative charge on the s-HA surface, and incorporating fluoride into CPP enhanced its anti-adhesion effect.

scholarly journals Synthesis of Chitosan/Zinc Oxide Nanoparticles Stabilized by Chitosan via Microwave Heating

2019 ◽  
Vol 14 (2) ◽  
pp. 450 ◽  
Author(s):  
Nurul Amira Ahmad Yusof ◽  
Norashikin Mat Zain ◽  
Norlin Pauzi
Keyword(s):  
Zinc Oxide ◽  
Microwave Heating ◽  
Zno Nanoparticles ◽  
Bacterial Infections ◽  
Pathogenic Bacteria ◽  
Antibacterial Properties ◽  
Inhibition Zone ◽  
Mean Value ◽  
Average Crystalline Size ◽  
Xrd Patterns

Nowadays, zinc oxide (ZnO) has attracted attention in research and development because of its remarkable antibacterial properties. Chitosan/ZnO nanoparticles were successfully synthesized via microwave heating. The objectives of this work were to investigate the effect of stabilizer, power heating and time heating on size of chitosan/ZnO nanoparticles and to determine antibacterial activity against pathogenic bacteria, where chitosan was used as a stabilizing agent. Chitosan/ZnO nanoparticles were analyzed  by Fourier Transform Infra Red (FTIR), X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), and Zetasizer instrument. The power heating and time heating were varied from 400 to 800 Watt and 4 to 8 minutes, respectively. The presence of chitosan has role on preventing the nanoparticles from agglomeration by producing a milky solution of chitosan/ZnO nanoparticles without any suspensions. The increase of power  and time heating improved the size of nanoparticles. The peak in FTIR spectrum at around 427 cm-1 was confirmed the existence of the ZnO phase. XRD patterns showed that the chitosan/ZnO nanoparticles materials were pure phase with average crystalline size is 130 nm. FESEM revealed that chitosan/ZnO nanoparticles were uniformly distributed with the mean value of size is 70 nm and spherical shaped. Further impact of power and time heating on the size of the chitosan/ZnO nanoparticles can be shown by a nanoparticles size distribution with the average of 30 to 90 nm. The results showed that chitosan/ZnO nanoparticles have displayed an antibacterial inhibition zone against Gram-positive S. aureus and Gram-negative E. coli which 16.0 and 13.3 mm, respectively. Chitosan/ZnO nanoparticles were synthesized in this work presented have potential application to prevent bacterial infections. Copyright © 2019 BCREC Group. All rights reserved 

scholarly journals Minireview: Formulasi Obat Kumur Ekstrak Daun Ketul (Bidens pilosa)

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Zidane Irwansyah ◽  
Hadinata Santoso ◽  
Mariana Wahjudi
Keyword(s):  
Antibacterial Activity ◽  
Streptococcus Mutans ◽  
Cardiac Glycosides ◽  
Antibacterial Properties ◽  
Tween 80 ◽  
Peppermint Oil ◽  
Literature Study ◽  
Bidens Pilosa ◽  
Extraction Solvent ◽  
Water Viscosity

Abstract— Ketul (Bidens pilosa L) is weed plant that has antibacterial properties. The potential of this plant has not been developed yet in Indonesia. We conducted a literature study about this plant use for herbal mouthwash. The purposes of this study were to determine components of Ketul leaf with antibacterial activity, to know the extraction solvent, to determine the method for antibacterial activity, and to predict the characteristics and components of herbal mouthwash formula. The results showed that Ketul leaf contains tannins, cardiac glycosides, saponins, alkaloids, flavonoids, and terpenoids which could inhibit the growth of various bacteria, including Streptococcus mutans. Hence the mouthwash is predicted to have antibacterial activity. The safe extraction solvent widely used was 70-80% ethanol. The Ketul leaf extract has the potential to be applied in herbal mouthwash formula. Other characteristic can be adjusted to meet the requirements as herbal mouthwash, which are pH between 5-7, the viscosity value near water viscosity value (1cP), stable during storage, and color is brownish yellow. Some common additives were added in mouthwash to improve the flavors and taste, such as sorbitol, tween-80, peppermint oil, and sodium benzoate. Keywords: antibacterial activity, solvent, Streptococcus mutans, weed Abstrak— Ketul (Bidens pilosa L) merupakan tumbuhan gulma yang memiliki aktivitas antibakteri. Potensi tumbuhan ini belum banyak dikembangkan di Indonesia. Pada tulisan ini telah dilakukan kajian pustaka pemanfaatan Ketul untuk obat kumur herbal. Tujuan kajian ini adalah untuk mengetahui komponen ekstrak daun Ketul yang berkhasiat antibakteri, mengetahui pelarut ekstraksi, metode penentuan aktivitas antibakteri obat kumur, dan prediksi karakteristik dan komponen obat kumur herbal daun Ketul. Hasil penelusuran pustaka menunjukkan bahwa daun Ketul mengandung tannin, glikosida jantung, saponin, alkaloid, flavonoid, dan terpenoid, yang dapat menghambat pertumbuhan berbagai bakteri, termasuk Streptococcus mutans sehingga obat kumur kemungkinan memiliki aktivitas antibakteri. Pelarut aman yang banyak digunakan untuk ekstraksi komponen fitokimia tersebut adalah etanol 70-80%. Penentuan daya antibakteri dapat dilakukan menggunakan metode difusi agar atau pengenceran. Ekstrak daun Ketul berpotensi digunakan dalam formula obat kumur herbal. Selain potensi antibakterinya, karakteristik lainnya dapat diatur untuk memenuhi syarat formula obat kumur herbal yaitu pH berkisar 5-7, nilai viskositas mendekati nilai viskositas air (1cP), stabilitas dapat tetap terjaga selama penyimpanan dan kemungkinan obat kumur berwarna kuning kecoklatan. Beberapa bahan tambahan, seperti sorbitol, tween-80, peppermint oil, dan natrium benzoate, merupakan bahan tambahan yang aman dan umum digunakan untuk menambah cita rasa dan stabilitas formula obat kumur herbal ekstrak daun Ketul. Kata kunci: aktivitas antibakteri, gulma, pelarut, Streptococcus mutans

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