scholarly journals Assessing the Potential Association Between Microbes and Corrosion of Intra-Oral Metallic Alloy-Based Dental Appliances Through a Systematic Review of the Literature

2021 ◽  
Vol 9 ◽  
Author(s):  
Umarevathi Gopalakrishnan ◽  
A. Sumathi Felicita ◽  
Lodd Mahendra ◽  
Masroor Ahmed Kanji ◽  
Saranya Varadarajan ◽  
...  
Keyword(s):  
Systematic Review ◽  
Lactobacillus Reuteri ◽  
Metallic Alloys ◽  
Metallic Alloy ◽  
Cobalt Chromium ◽  
Streptococcus Sobrinus ◽  
Potential Association ◽  
Copper Aluminum ◽  
Oral Microorganisms

Objective: Systematic review assessing the association between oral microorganisms and corrosion of intra-oral metallic alloy-based dental appliances.Design: PubMed, Scopus, and Web of Science were searched using keyword combinations such as microbes and oral and corrosion; microbes and dental and corrosion; microorganisms and oral and corrosion; microorganisms and dental and corrosion.Results: Out of 141 articles, only 25 satisfied the selection criteria. Lactobacillus reuteri, Streptococcus mutans, Streptococcus sanguis, Streptococcus mitis, Streptococcus sobrinus, Streptococcus salivarius, sulfate-reducing bacteria, sulfate oxidizing bacteria, Veilonella, Actinomyces, Candida albicans were found to have a potential association with corrosion of intraoral metallic alloys such as stainless steel, titanium, nickel, cobalt-chromium, neodymium-iron-boron magnets, zirconia, amalgam, copper aluminum, and precious metal alloys.Conclusion: The included studies inferred an association between oral microorganisms and intra-oral metallic alloys-based dental appliances, although, it is vital to acknowledge that most studies in the review employed an in-vitro simulation of the intra-oral condition.

scholarly journals In Vitro Antimicrobial Activities of Bakuchiol against Oral Microorganisms

2001 ◽  
Vol 45 (11) ◽  
pp. 3009-3013 ◽  
Author(s):  
Harumi Katsura ◽  
Ryo-Ichi Tsukiyama ◽  
Akiko Suzuki ◽  
Makio Kobayashi
Keyword(s):  
Food Additives ◽  
Bactericidal Effect ◽  
Antimicrobial Activities ◽  
Dependent Manner ◽  
Streptococcus Sobrinus ◽  
Concentration Dependent Manner ◽  
Bactericidal Effects ◽  
Insoluble Glucan ◽  
Oral Microorganisms

ABSTRACT Bakuchiol was isolated from the seeds of Psoralea corylifolia, a tree native to China with various uses in traditional medicine, followed by extraction with ether and column chromatography combined with silica gel and octyldecyl silane. In this study, the antimicrobial activities of bakuchiol against some oral microorganisms were evaluated in vitro. The cell growth ofStreptococcus mutans was inhibited in a bakuchiol concentration-dependent manner, and growth of S. mutanswas completely prevented by 20 μg of bakuchiol per ml. The bactericidal effect of bakuchiol on S. mutans was dependent on temperature and stable under the following conditions: sucrose, 0 to 10% (wt/vol); pH, 3.0 to 7.0; organic acids (3% [wt/vol] citric and malic acids). Bakuchiol showed bactericidal effects against all bacteria tested, includingS. mutans, Streptococcus sanguis,Streptococcus salivarius, Streptococcus sobrinus, Enterococcus faecalis,Enterococcus faecium, Lactobacillus acidophilus, Lactobacillus casei,Lactobacillus plantarum, Actinomyces viscosus, and Porphyromonas gingivalis, with MICs ranging from 1 to 4 μg/ml and the sterilizing concentration for 15 min ranging from 5 to 20 μg/ml. Furthermore, bakuchiol was also effective against adherent cells of S. mutans in water-insoluble glucan in the presence of sucrose and inhibited the reduction of pH in the broth. Thus, bakuchiol would be a useful compound for development of antibacterial agents against oral pathogens and has great potential for use in food additives and mouthwash for preventing and treating dental caries.

Corrosion of Metallic Endovascular Stents and Analyses of Wear Debris in Tissues

2009 ◽  
Author(s):  
Dina O. Halwani ◽  
Peter G. Anderson ◽  
Brigitta C. Brott ◽  
Andreas S. Anayiotos ◽  
Jack E. Lemons
Keyword(s):  
Wear Debris ◽  
Vascular Tissue ◽  
Metallic Alloys ◽  
Nickel Titanium ◽  
In Vitro Tests ◽  
Limited Information ◽  
Cobalt Chromium ◽  
Endovascular Stents ◽  
Complex Anatomy

Corrosion resistance of metallic alloys commonly used in the manufacture of endovascular stents has been determined through in-vitro tests; however, limited information is available regarding the biostability of stent surfaces and their interaction with vascular tissue following implantation. As technology improves, stents are increasingly deployed in complex anatomy and higher risk locations. They are frequently implanted overlapping other stents, either deployed during the same procedure or to treat a recurrent lesion. In addition, with several alloys available for stents such as stainless steel (SS), nickel-titanium (NiTi), cobalt-chromium (CoCr), cobalt-chromium with a tantalum core (CoCr-Ta) and tantalum (Ta); there is an increasing likelihood of overlapping stents of different materials.

Association between Vitamins and Minerals with Antioxidant Effects and Coronary Artery Calcification in Adults and Older Adults: A Systematic Review

2019 ◽  
Vol 25 (22) ◽  
pp. 2474-2479 ◽  
Author(s):  
Alisson Diego Machado ◽  
Gustavo Rosa Gentil Andrade ◽  
Jéssica Levy ◽  
Sara Silva Ferreira ◽  
Dirce Maria Marchioni
Keyword(s):  
Systematic Review ◽  
Older Adults ◽  
Coronary Artery ◽  
Coronary Artery Calcification ◽  
Serum Levels ◽  
Antioxidant Compounds ◽  
Increased Risk ◽  
Coronary Events ◽  
Antioxidant Effects

Background: Coronary Artery Calcification (CAC) is considered an important cardiovascular risk factor. There is evidence that CAC is associated with an increased risk of atherosclerosis, coronary events and cardiovascular mortality. Inflammation is one of the factors associated with CAC and despite the interest in antioxidant compounds that can prevent CAC, its association with antioxidants remains unclear. Objective: This study aimed to systematically review the association between vitamins and minerals with antioxidant effects and CAC in adults and older adults. Methods: We conducted a systematic review using PubMed for articles published until October 2018. We included studies conducted in subjects aged 18 years and older with no previous cardiovascular disease. Studies involving animal or in vitro experiments and the ones that did not use reference methods to assess the CAC, dietary intake or serum levels of vitamin or mineral were excluded. Results: The search yielded 390 articles. After removal of duplicates, articles not related to the review, review articles, editorials, hypothesis articles and application of the inclusion and exclusion criteria, 9 articles remained. The results of the studies included in this systematic review suggest that magnesium is inversely associated with CAC and results on the association between CAC and vitamin E have been conflicting. Conclusion: Additional prospective studies are needed to elucidate the role of these micronutrients on CAC.

Transplantation of Adipose-derived Cells for Periodontal Regeneration: A Systematic Review

2019 ◽  
Vol 14 (6) ◽  
pp. 504-518 ◽  
Author(s):  
Dilcele Silva Moreira Dziedzic ◽  
Bassam Felipe Mogharbel ◽  
Priscila Elias Ferreira ◽  
Ana Carolina Irioda ◽  
Katherine Athayde Teixeira de Carvalho
Keyword(s):  
Systematic Review ◽  
Animal Models ◽  
Platelet Rich Plasma ◽  
Periodontal Regeneration ◽  
In Vitro Studies ◽  
In Vivo Studies ◽  
Cell Sources ◽  
Study Designs

This systematic review evaluated the transplantation of cells derived from adipose tissue for applications in dentistry. SCOPUS, PUBMED and LILACS databases were searched for in vitro studies and pre-clinical animal model studies using the keywords “ADIPOSE”, “CELLS”, and “PERIODONTAL”, with the Boolean operator “AND”. A total of 160 titles and abstracts were identified, and 29 publications met the inclusion criteria, 14 in vitro and 15 in vivo studies. In vitro studies demonstrated that adipose- derived cells stimulate neovascularization, have osteogenic and odontogenic potential; besides adhesion, proliferation and differentiation on probable cell carriers. Preclinical studies described improvement of bone and periodontal healing with the association of adipose-derived cells and the carrier materials tested: Platelet Rich Plasma, Fibrin, Collagen and Synthetic polymer. There is evidence from the current in vitro and in vivo data indicating that adipose-derived cells may contribute to bone and periodontal regeneration. The small quantity of studies and the large variation on study designs, from animal models, cell sources and defect morphology, did not favor a meta-analysis. Additional studies need to be conducted to investigate the regeneration variability and the mechanisms of cell participation in the processes. An overview of animal models, cell sources, and scaffolds, as well as new perspectives are provided for future bone and periodontal regeneration study designs.

A Review on Melatonin’s Effects in Cancer: Potential Mechanisms

2018 ◽  
Vol 18 (7) ◽  
pp. 985-992 ◽  
Author(s):  
Aysegul Hanikoglu ◽  
Ertan Kucuksayan ◽  
Rana Cagla Akduman ◽  
Tomris Ozben
Keyword(s):  
Systematic Review ◽  
Antioxidant Activity ◽  
Membrane Receptors ◽  
Cancer Development ◽  
Secretory Product ◽  
Prevention And Treatment ◽  
G Protein Coupled

This systematic review aims to elucidate the role of melatonin (N-acetyl-5-metoxy-tryptamine) (MLT) in the prevention and treatment of cancer. MLT is a pineal gland secretory product, an evolutionarily highly conserved molecule; it is also an antioxidant and an impressive protector of mitochondrial bioenergetic activity. MLT is characterized by an ample range of activities, modulating the physiology and molecular biology of the cell. Its physiological functions relate principally to the interaction of G Protein-Coupled MT1 and MT2 trans-membrane receptors (GPCRs), a family of guanidine triphosphate binding proteins. MLT has been demonstrated to suppress the growth of various tumours both, in vivo and in vitro. In this review, we analyze in depth, the antioxidant activity of melatonin, aiming to illustrate the cancer treatment potential of the molecule, by limiting or reversing the changes occurring during cancer development and growth.

Adverse Effects of Natural Products: A Brief Pre-Systematic Review

2020 ◽  
Vol 01 ◽  
Author(s):  
Carla Pires ◽  
Ana Fernandes
Keyword(s):  
Systematic Review ◽  
Adverse Event ◽  
Natural Products ◽  
Adverse Events ◽  
In Vitro Study ◽  
Google Scholar ◽  
Inclusion Criteria ◽  
Exclusion Criteria ◽  
Meta Analyses

Background: Natural products are commonly used for treating health problems. These products may be associated with adverse events, which are defined as "noxious and unintended response to a medicinal product" by the European Medicine Agency. Objectives: To identify studies describing at least one adverse event (or with potential to promote an adverse event) related to the use of natural products, as well as to describe the involved product(s) and adverse event(s). Methods: A pre-systematic review following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses criteria. Keywords: "natural product(s)" and ["adverse drug reaction(s)" or "adverse effect(s)"]. Screened databases: PubMed, SciELO, DOAJ and Google Scholar. Inclusion criteria: papers describing at least one adverse event associated with the use of natural products and published between 2017 and 2019. Exclusion criteria: Repeated studies, reviews and papers written in other languages than English, Portuguese, French or Spanish. Results: 104 studies were identified (20 PubMed; 0 SciELO; 2 DOAJ; 82 Google Scholar), but only 10 were selected (4 PubMed and 6 Google Scholar): 1 in-vitro study; 2 non-clinical studies, 1 study reporting in-vitro and clinical data and 5 studies were cases reports. Globally, 997 reports of adverse drug reactions with natural products were identified, mainly non-severe cases. Conclusion: Since a limited number of studies was found, we conclude that adverse events due to natural products may be underreported, or natural products may have a good safety profile. This review contributes for assuring the safety of natural products consumers, by evaluating the knowledge/information on the potential adverse events and interactions of these products.

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