نتایج جستجو برای: mercury amalgam

تعداد نتایج: 43944  

2017
Stephen M. Koral

Dentists all over the world remove millions of amalgam fillings every day, with no regard for the possible mercury exposure that can result from grinding them out. Much of the time, a new amalgam filling goes back in place of the old one. The dental establishment claims that amalgam is a stable material, that emits little or no mercury, but then turns around and blames the mercury–free dentists...

2017

Dentists all over the world remove millions of amalgam fillings every day, with no regard for the possible mercury exposure that can result from grinding them out. Much of the time, a new amalgam filling goes back in place of the old one. The dental establishment claims that amalgam is a stable material, that emits little or no mercury, but then turns around and blames the mercury–free dentists...

2017

Dentists all over the world remove millions of amalgam fillings every day, with no regard for the possible mercury exposure that can result from grinding them out. Much of the time, a new amalgam filling goes back in place of the old one. The dental establishment claims that amalgam is a stable material, that emits little or no mercury, but then turns around and blames the mercury–free dentists...

2013
Daniel J Dutton Ken Fyie Peter Faris Ludovic Brunel JC Herbert Emery

OBJECTIVE The objective of this study was to quantify the relationship between number of dental amalgam surfaces and urinary mercury levels. METHODS This study uses participant data from a large philanthropic chronic disease prevention program in Calgary, Alberta, Canada. Urine samples were analysed for mercury levels (measured in μg/g-creatinine). T-tests were used to determine if difference...

2017

The largest source of mercury located in dental amalgam fillings people. In this study, mercury level in saliva of amalgam and non-amalgam human were compared as well as the level of α amylase has been detected. Materialsand methods: The concentration of mercury, silver, and activity of amylase in saliva were measured in 55 adult study subjects. The mercury contents were determined by cold–vapo...

Journal: :journal of dentistry, tehran university of medical sciences 0
f. agha hosseini p. begianian vaziri

statement of problem: amalgam is the most widely used dental restorative material. however, because of continuous low-level release of mercury from amalgam fillings, its safety has been questionable. purpose: the aim of this study was the evaluation of concentration of mercury in saliva before and after amalgam fillings and its relation with numbers and surfaces of amalgam fillings. materials a...

Journal: :Dental materials journal 2000
K Ohmoto H Nakajima J L Ferracane H Shintani T Okabe

This study examined the relationship between mercury content and mercury evaporation from amalgams during setting. Two different types of commercial high-copper amalgams (single composition and admixed types) were used. Cylindrical specimens of each amalgam were prepared with five different mercury contents according to ADA Specification No.1. Specimens were also prepared by hand condensation. ...

Journal: :Archives of dermatology 2004
Ronald Laeijendecker Sybren K Dekker Piet M Burger Paul G H Mulder Theodoor Van Joost Martino H A Neumann

OBJECTIVES To determine contact allergies in patients with oral lichen planus and to monitor the effect of partial or complete replacement of amalgam fillings following a positive patch test reaction to ammoniated mercury, metallic mercury, or amalgam. DESIGN In group A (20 patients), the oral lesions were confined to areas in close contact with amalgam fillings. In group B (20 patients), the...

2007
James S. Woods Michael D. Martin Brian G. Leroux Timothy A. DeRouen Jorge G. Leitão Mario F. Bernardo Henrique S. Luis P. Lynne Simmonds John V. Kushleika Ying Huang

BACKGROUND Urinary mercury concentrations are widely used as a measure of mercury exposure from dental amalgam fillings. No studies have evaluated the relationship of these measures in a longitudinal context in children. OBJECTIVE We evaluated urinary mercury in children 8-18 years of age in relation to number of amalgam surfaces and time since placement over a 7-year course of amalgam treatm...

Journal: :Journal 2004
Albert O Adegbembo Philip A Watson

AIM To estimate the quantity of dental amalgam that Ontario dentists release into waste water. METHODS Information from a self-administered postal survey of Ontario dentists was combined with the results of other experiments on the weight of amalgam restorations and the quantity of amalgam waste that bypasses solids separators in dental offices. Algorithms were developed to compute the quanti...

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