The use of DMPS as a diagnostic tool in patients with symptoms allegedly caused by mercury from dental amalgam fillings is disputed. We have previously shown that the mercury concentrations in urine cannot be used in such a way. In the present study, we wished to evaluate the effect on blood mercury levels (B-Hg) following intravenously injected DMPS in four groups of subjects: 19 controls with...

Using the information from remake request slips in a dental school's predoctoral clinic, we examined the short-term survival of Class II resin composite restorations versus Class II dental amalgam restorations. In the student clinic, resin composite is used in approximately 58 percent of Class II restorations placed, and dental amalgam is used in the remaining 42 percent. In the period examined...

A concentrated review on the toxicology of inorganic mercury together with an extensive review on the neurotoxicology of methylmercury is presented. The challenges of using inorganic mercury in dental amalgam are reviewed both regarding the occupational exposure and the possible health problems for the dental patients. The two remaining "mysteries" of methylmercury neurotoxicology are also bein...

Exposure to mercury from dental amalgams, with possible negative health effects, has generally been considered to occur via either erosion or evaporation directly from the surface of fillings, followed by ingestion. The aim of this study was to determine the relative importance of the direct migration of mercury through the tooth as an alternative exposure pathway. X-ray fluorescence imaging ha...

Use of mercury as a component of restorative material is continuing to generate controversy. There is no doubt that dental amalgam is a very good restorative material. However, at the same time, there are serious health issues with mercury. Whether the amount of mercury in the mouth can cause any serious effect is still very much controversial. Composite resin, the popular alternative material ...

Human biomonitoring is an important tool for the evaluation of environmental exposure to contaminants. The data that are obtained from these studies might be compared to appropriate reference values (RVs) in a specific population. The RVs were derived from the rounded values of the upper limit of the 95th confidence interval of the 95th percentile for lead (Pb), cadmium (Cd) and mercury (Hg) in...

Lakoff (1974) brought to the attention of the linguistic community a construction that seems to have triggered surprisingly little interest in the subsequent literature. The construction at issue exhibits constituents with the superficial appearance of root sentences in positions that are normally filled by DPs, APs or PPs (functioning as arguments, adjuncts, or predicates), and presumably for ...

Dental clinicians have an expanding range of biomaterial choices for restoring tooth structure. Scientific developments in cariology, advances in dental biomaterials, and patients' esthetic concerns have led to a reduction in amalgam restorations and an increase in composite restorations. The aim of this study was to compare teaching time with students' clinical procedures in amalgam and compos...

At present, many amalgam alloys are commercially available. These alloys can be classified as having low and high copper contents and, also in terms of being lathe-cut, spherical or admixed. The various claims of the manufacturers concerning the advantages of their products in terms of both composition and particle shape, often causes confusion to the practitioner. Therefore, it is important to...

As dental practitioners, we must recognize that some of the materials and procedures we use to provide dental health services may present challenges to the environment. Realizing this, we can begin to take measures to minimize the production of these wastes and their potential environmental effects. This paper identifies some common wastes produced by dental offices (dental amalgam, lead, silve...