نتایج جستجو برای: chronic mercury exposure

تعداد نتایج: 814295  

2005
Michael T. Morrissey

Mercury is a toxic heavy metal released into the environment from both natural and anthropogenic sources. It is of great interest to consumers as to whether it can cause neurological effects at low dose levels. The effects of organic mercury exposure at high levels have been demonstrated in several large-scale poisonings, particularly those in Japan and Iraq in the 1950s, ‘60s and ‘70s. These e...

Journal: :Micro 2023

The dental environment is being polluted with metals from materials in many ways, mainly due to aerosol-generating procedures; this could affect the long-term well-being of dentists, students, and personnel. current pollution incorporates metallic nanoparticles, which are highly reactive quickly become airborne, especially those particles that unbound bulk composition. In addition, liquid mercu...

E Sadripour M. S Mortazavi, N Mahdavi Shahri

This study investigated the effects of increasing mercury (Hg) concentration on early developmental stages of sea urchin, Echinomethra mathaei, as a bioindicator. The toxicity test was carried out after the gamete released induction and fertilization in six concentrations of mercury within the range of 4, 8, 16, 32, 64 and 128 µg/L. Embryos samples were incubated for 30 h in control and test so...

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: :Occupational and Environmental Medicine 1993

2008

Mercury is found in the environment as elemental mercury, inorganic mercury or organic mercury (ethyl-, methyl-, alkyl-, or phenylmercury). In our environment it is present in thermometers, thermostats, dental amalgams, paint, cosmetic products, laxatives, diuretics and antiseptics. Organic mercury is the most toxic and most frequent form of mercury exposure, found in fish, poultry, pesticides ...

2006
Sergio Navarro

The various methods of treatment to mercury toxicity in the human body have been studied and investigated with somewhat mixed conclusions. This paper discusses the various types of mercury, the cycle of mercury in the environment, human exposure to mercury and treatment, and methods of reducing mercury pollution and its effect in the human population in the U.S.

2013
SAWSAN F. HELAL Sawsan F. Helal

For more than a century and half, silver/mercury amalgam fillings have been used in dental practice as the preferred tooth filling material. Currently, occupational exposure of dental staff to mercury vapor released from the amalgam, has been an issue of concern because of its possible adverse outcomes. Aim: The aim of this work was to determine the mercury body burden in dental staff exposed t...

2014
Indu Miriam Varkey Rajmohan Shetty Amitha Hegde

OBJECTIVES Mercury combined with other metals to form solid amalgams has long been used in reconstructive dentistry but its use has been controversial since at least the middle of the 19th century. The exposure and body burden of mercury reviews have consistently stated that there is a deficiency of adequate epidemiological studies addressing this issue. Fish and dental amalgam are two major so...

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