scholarly journals Endocrine disruptors and dental materials: health implications associated with their use in Brazil

2002 ◽  
Vol 18 (2) ◽  
pp. 505-509 ◽  
Author(s):  
Antonio Jorge Molinário Coelho
Keyword(s):  
Occupational Exposure ◽  
Bisphenol A ◽  
Dental Materials ◽  
Chemical Properties ◽  
Work Force ◽  
Dental Practice ◽  
Resin Cements ◽  
Historical Trends ◽  
Contemporary Work ◽  
Force Characteristics

This study analyzes international historical trends in the use of different types of materials in dental practice. The author describes the chemical properties of their ingredients and the potential and observed adverse effects in patients and dental technicians resulting from clinical or occupational exposure to various metals like beryllium, used to produce metal alloys. The growing use of various products (resin cements, ionomer cements, aesthetic restorative materials, resins, endodontal cements, and others) based on the compound bisphenol-A, whose chemical structure is similar to that of estrogen. Considering the demographic and contemporary work force characteristics of those involved in dental practice in the Brazil, the study highlights the possible effect of the use of these materials in both male and female patients and all age strata, as well as in health professionals with occupational exposure to products containing bisphenol-A.

Bisphenol A as degradation product of monomers used in resin-based dental materials

2021 ◽  
Author(s):  
Siemon De Nys ◽  
Radu Corneliu Duca ◽  
Philippe Vervliet ◽  
Adrian Covaci ◽  
Imke Boonen ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Degradation Product ◽  
Dental Materials

The contemporary British workplace: a safer and healthier place?

2006 ◽  
Vol 20 (1) ◽  
pp. 87-107 ◽  
Author(s):  
Andrew M. Robinson ◽  
Clive Smallman
Keyword(s):  
Health And Safety ◽  
Work Force ◽  
British Government ◽  
Employment Practices ◽  
Workplace Accidents ◽  
Management Techniques ◽  
Nationally Representative ◽  
The Impact ◽  
Work And Employment ◽  
Force Characteristics

Using a nationally representative survey of British workplaces, this article seeks to extend current perspectives on OHS (occupational health and safety) by examining the impact of a range of current work and employment practices, and work-force characteristics on the incidence of workplace accidents and, uniquely, ill health. Our findings indicate that the British Government faces major challenges in terms of its plans for OHS. Ill health, in particular, is poorly served by existing OHS management techniques, while injury and illness seem to be associated with many more ‘determinants’ in the world of work than has previously been proven.

scholarly journals Detection of Bisphenol-A in Dental Materials by Gas Chromatography-Mass Spectrometry.

2000 ◽  
Vol 19 (1) ◽  
pp. 75-86 ◽  
Author(s):  
Atsufumi MANABE ◽  
Shoko KANEKO ◽  
Satoshi NUMAZAWA ◽  
Kazuo ITOH ◽  
Mitsuko INOUE ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Bisphenol A ◽  
Dental Materials ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry

scholarly journals Effect of therapeutic dose X rays on mechanical and chemical properties of esthetic dental materials

2008 ◽  
Vol 11 (3) ◽  
pp. 313-318 ◽  
Author(s):  
Adriana Dibo da Cruz ◽  
Mário Alexandre Coelho Sinhoreti ◽  
Gláucia Maria Ambrosano ◽  
Alessandra Nara de Souza Rastelli ◽  
Vanderlei Salvador Bagnato ◽  
...  
Keyword(s):  
Therapeutic Dose ◽  
Dental Materials ◽  
Chemical Properties ◽  
X Rays ◽  
And Chemical Properties

scholarly journals Adsorption Characteristics and Mechanism of Bisphenol A by Magnetic Biochar

2020 ◽  
Vol 17 (3) ◽  
pp. 1075 ◽  
Author(s):  
Jinpeng Wang ◽  
Ming Zhang
Keyword(s):  
Bisphenol A ◽  
Exothermic Reaction ◽  
Chemical Properties ◽  
Solution Ph ◽  
Acceptor Interaction ◽  
Endocrine Disrupting Chemical ◽  
Magnetic Biochar ◽  
Grapefruit Peel ◽  
Initial Adsorption ◽  
Physical And Chemical

In this paper, biochar (BC) was prepared from discarded grapefruit peel and modified to prepare magnetic biochar (MBC). Physical and chemical properties of BC and MBC were characterized, and the results showed that the type of iron oxide loaded by MBC was γ-Fe2O3. Compared with BC, MBC has a larger specific surface area and pore volume, with more oxygen-containing functional groups on the surface. BC and MBC were used to adsorb and remove endocrine-disrupting chemical (EDC) bisphenol A (BPA) from simulated wastewater. The results showed that the adsorption kinetics and adsorption isotherm of BPA adsorption by BC and MBC were mainly in accordance with the pseudo-second-order kinetics model and the Langmuir model. This indicates that the adsorption of BPA on BC and MBC is mainly a chemically controlled monolayer adsorption. Adsorption thermodynamics show that BC and MBC adsorption of BPA is a spontaneous exothermic reaction, and lowering the temperature is conducive to the adsorption reaction. The effect of solution pH on the adsorption of BPA by both was significant. The optimum pH for BC and MBC to absorb BPA was 6 and 3, respectively. The concentration of Na+ in the range of 0–0.10 mol·L−1 can promote the adsorption of BPA to MBC. MBC loaded with γ-Fe2O3 not only has excellent magnetic separation ability, but can also reach about 80% of the initial adsorption capacity after four cycles of adsorption. By analyzing the adsorption mechanism, it was found that the H-bond and the π–π electron donor–acceptor interaction (EDA) were the main forces for BC and MBC to adsorb BPA.

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