نتایج جستجو برای: mercury amalgam

تعداد نتایج: 43944  

2014
Jennifer D Zwicker Daniel J Dutton John Charles Herbert Emery

BACKGROUND Mercury vapor poses a known health risk with no clearly established safe level of exposure. Consequently there is debate over whether the level of prolonged exposure to mercury vapor from dental amalgam fillings, combining approximately 50% mercury with other metals, is sufficiently high to represent a risk to health. The objective of our study is to determine if mercury exposure fro...

Journal: :Chemical research in toxicology 2009
Graham N George Satya P Singh Jay Hoover Ingrid J Pickering

Mercury-containing dental amalgam is known to be a source of human exposure to mercury. We have explored the use of electron yield Hg L(III) X-ray absorption spectroscopy to characterize the chemical nature of dental amalgam surfaces. We find that the method is practical and that it shows extensive mercury depletion in the surface of the aged amalgam with significant differences between old and...

Journal: :Australian dental journal 2000
G Chin J Chong A Kluczewska A Lau S Gorjy M Tennant

Dental amalgam is one of the most commonly used materials in restorative dentistry. However, one of its major components, mercury, is of particular concern due to its potential adverse effects on humans and the environment. In this review, the environmental impact of dental amalgam will be discussed, with particular reference to the effects attributed to its mercury component. Mercury commonly ...

Journal: :مجله دانشکده دندانپزشکی اصفهان 0
مجید اکبری فاطمه ولایتی مقدم امیر احمدی majid akbari fatemeh velayati moghadam amir ahmadi

introduction: dentists are exposed to mercury vapor from dental amalgam in their routine occupational practice; excess exposure to mercury is harmful. the aim of this study was to assess the influence of some possible related factors on the urine mercury levels of general dentists and restorative specialists in mashhad in 2010. materials and methods: this cross-sectional study was performed ran...

Journal: :journal of dentistry, tehran university of medical sciences 0
sh. kasraei associate professor, department of restorative dentistry, school of dentistry, hamadan university of h. mortazavi assistant professor, department of oral medicine, school of dentistry, hamadan university of medical m. vahedi assistant professor, department of oral medicine, school of dentistry, hamadan university of medical p. bakianian vaziri mj. assary assistant professor, department of occupational health, school of health, hamadan university of medi

objective: exposure to mercury can occur in occupational and environmental settings. during clinical work with dental amalgam, the dental personnel are exposed to both metallic mercury and mercury vapor. the aim of the present study was to investigate blood mercury level (bml) and its determinants among dentists practicing in hamadan city, iran. materials and methods: this cross sectional study...

2003

The Case Against Amalgam ............................................................................. 1 Amalgam releases significant quantities of mercury. ........................................... 2 Mercury distributes to tissues around the body................................................... 4 Maternal – fetal transfer of mercury.............................................................

Journal: :journal of dentistry, tehran university of medical sciences 0
m. azarsina dds, post graduate student, department of operative dentistry, faculty of dentistry, hamadan univers sh. kasraei dds, ms, associate professor, dental research center, department of operative dentistry, faculty of t. masoum dds, ms, assistant professor, department of pediatric dentistry, faculty of dentistry, hamadan unive z. khamverdi dds, ms, associate professor, dental research center, department of operative dentistry, faculty of

objectives: this study evaluated the effect of surface polishing on mercury release from dental amalgam after treatment with 16% carbamide peroxide gel. materials and methods: ninety-six samples from two different amalgam brands were prepared in truncated cone-shaped pvc polymer molds with an external surface area of 195 mm². half of the specimens were polished with green and red rubber, a brus...

2011
Yurdanur Uçar William A. Brantley

Objective. The purpose of this review paper is to review the literature regarding the toxicology of mercury from dental amalgam and evaluate current statements on dental amalgam. Materials and Methods. Two key-words "dental amalgam" and "toxicity" were used to search publications on dental amalgam biocompatibility published in peer-reviewed journals written in English. Manual search was also co...

2013
Rachel Pike

As very little information was available on mercury sensitivity testing, the first aim was to determine the most suitable agar and concentration of mercuric chloride to use in this project. The primary objective o f the study was to determine whether mercury released from amalgam fillings could increase the prevalence o f mercury-resistant bacteria in the oral flora of children. This was achiev...

سقراط فقیه زاده, , سید محمود قاسمپوری, , عباس اسماعیلی ساری, , قاسم ذوالفقاری, ,

Background: Dental amalgam, a mixture of approximately 50% mercury with silver, tin, zinc and copper in varying ratios, is a major source of mercury pollution in the general population not occupationally exposed. The toxicity of mercury is enhanced because it is so readily absorbed, with around 90-100% of mercury vapor being absorbed through the oral mucosa. The aim of the current study is to e...

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