OBJECTIVE To compare survival rates and cost differentials between the atraumatic restorative treatment (ART) technique and amalgams by type of dental personnel in Ecuador, Panama, and Uruguay. METHODS Children 7 to 9 years of age in rural and urban schools with at least one lesion with initial cavitated enamel caries or a dentinal lesion on a first permanent molar were selected and randomize...

Aim: To review the release of mercury from the amalgam restorations and its effects on health. Objective: The main objective of the review is to analyse the various causes for the release of mercury and the amount of mercury released from restorative procedures and its intensity of toxicity that causes various significant hazards to the health of an individual. Background: Amalgam is one of the...

Environmental Health Perspectives • volume 121 | number 1 | January 2013 A 11 Ursinyova M, Masanova V, Palkovicova L, Wsolova L. 2006. The influence of mother’s dental amalgam fillings on prenatal and postnatal exposure of children to mercury [Abstract]. Epidemiology 17:S494–S495. Wannag A, Skjaeråsen J. 1975. Mercury accumulation in placenta and foetal membranes. A study of dental workers and ...

BACKGROUND The aetiology of multiple sclerosis (MS) remains poorly understood. Dental amalgams containing mercury have recently been suggested as a possible risk factor for MS. METHODS In a case-control study conducted between 1991 and 1994, we interviewed a total of 143 MS patients and 128 controls, to obtain information on socio-demographic characteristics and the number of dental amalgams ...

OBJECTIVE We sought to systematically review the literature related to oral lichenoid lesions (OLLs) and amalgam restorations. STUDY DESIGN Cohort and case-controlled studies (no randomized controlled trials or controlled clinical trials available) were reviewed with respect to inclusion criteria and data on patients with OLLs, treatment interventions, and the measurement of outcomes. RESUL...

OBJECTIVE To report methodological difficulties with restoration survival data in controlled clinical trials on Class II amalgam restorations using a split-mouth design. The advantages and disadvantages of different ways of handling these data are described. METHODS Three statistical methods (Kaplan-Meier estimation, logistic regression with random component and Friedman's statistic) are comp...

The brittleness of dental amalgam limits its use to sites in which tensile stresses can be kept at a minimum. If the cause for the brittleness could be ascertained, then an approach to correct this problem could be devised. Physical properties of metals are ultimately manifested in, and can be explained by, their microstructure. Through the work of several researchers,1-3 means of identifying t...

Dental amalgam powder consisting of conventional, spherical-shaped alloy was prepared and added to the diet at the rate of 10% or 20% of the weight. An inorganic mercury compound, a solution of 10ppm or 20ppm of mercurous nitrate was also prepared for a comparative study. Five groups of rats were fed the test diet or test solution ad libitum for 8 weeks. Throughout the experiment, all rats were...

OBJECTIVES We present total mercury (THg) in blood of Canadians 6-79 years of age from the first to-date nationally-representative survey, the Canadian Health Measures Survey (CHMS). This analysis is particularly relevant in the context of recent changes to Health Canada's blood Hg guidance values. METHODS We used data from cycle 1 (2007-2009) of the CHMS, in particular focussing on 5,319 res...