Dental clinics: A point pollution source, not only of mercury but also of other amalgam constituents

Shraim, Amjad; AlSuhaimi, Awadh O.; Althakafy, Jalal T.

doi:10.1016/j.chemosphere.2011.04.034

Cited by 27 publications

(28 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The values obtained agree with other studies that have reported 2–12 times higher Hg values in the body tissues of patients with dental amalgam fillings [14,15] . Ba levels were also seen to increase in women with dental fillings; this feature reflects the findings of another study in which increased Barium (Ba) levels exceeding the local permissible limits were found among dentists [16] . In the present study, Hg and Al levels were correlated between subject with fillings (r = 0.65; p<0.05), although Hg, Ag, Al, or Ba levels did not differ significantly between women with or more than four dental fillings in their mouths.…”

Section: Discussionsupporting

confidence: 76%

“…Interestingly, lower SOD-1 activity has been detected in elderly pre-diabetic patients compared with healthy control subjects [33]. Thus, the enhanced SOD-1 activity could help maintain a healthy oxidative balance, which would otherwise have been disrupted by mercury [24] and other heavy metals released by the dental fillings [ 16] . In addition, (Zn) also rose in people with dental amalgams and SOD-1 is a Cu/Zn dependent enzyme [34].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Increased Zn/Glutathione Levels and Higher Superoxide Dismutase-1 Activity as Biomarkers of Oxidative Stress in Women with Long-Term Dental Amalgam Fillings: Correlation between Mercury/Aluminium Levels (in Hair) and Antioxidant Systems in Plasma

Cabaña-Muñoz

Parmigiani-Izquierdo²,

González

et al. 2015

PLoS ONE

View full text Add to dashboard Cite

BackgroundThe induction of oxidative stress by Hg can affect antioxidant enzymes. However, epidemiological studies have failed to establish clear association between dental fillings presence and health problems.ObjectivesTo determine whether heavy metals (in hair), antioxidant enzymes (SOD-1) and glutathione levels could be affected by the chronic presence of heavy metals in women who had dental amalgam fillings.Materials and Methods55 hair samples (42 females with amalgam fillings and 13 female control subjects) were obtained. All subjects (mean age 44 years) who had dental amalgam filling for more than 10 years (average 15 years). Certain metals were quantified by ICP-MS (Mass Spectrophotometry) in hair (μg/g: Al, Hg, Ba, Ag, Sb, As, Be, Bi, Cd, Pb, Pt, Tl, Th, U, Ni, Sn, Ti) and SOD-1 and Glutathione (reduced form) levels in plasma. Data were compared with controls without amalgams, and analyzed to identify any significant relation between metals and the total number of amalgam fillings, comparing those with four or less (n = 27) with those with more than four (n = 15). As no significant differences were detected, the two groups were pooled (Amlgam; n = 42).FindingsHg, Ag, Al and Ba were higher in the amalgam group but without significant differences for most of the heavy metals analyzed. Increased SOD-1 activity and glutathione levels (reduced form) were observed in the amalgam group. Aluminum (Al) correlated with glutathione levels while Hg levels correlated with SOD-1. The observed Al/glutathione and Hg/SOD-1 correlation could be adaptive responses against the chronic presence of mercury.ConclusionsHg, Ag, Al and Ba levels increased in women who had dental amalgam fillings for long periods. Al correlated with glutathione, and Hg with SOD-1. SOD-1 may be a possible biomarker for assessing chronic Hg toxicity.

show abstract

Section: Discussionsupporting

confidence: 76%

Section: Discussionmentioning

confidence: 99%

Increased Zn/Glutathione Levels and Higher Superoxide Dismutase-1 Activity as Biomarkers of Oxidative Stress in Women with Long-Term Dental Amalgam Fillings: Correlation between Mercury/Aluminium Levels (in Hair) and Antioxidant Systems in Plasma

Cabaña-Muñoz

Parmigiani-Izquierdo²,

González

et al. 2015

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…Medical services, especially dentistry (Shraim et al 2011), are still widely using mercury. Accordingly, mercury is detected in medical waste.…”

Section: Mercury In Wastementioning

confidence: 99%

Analysis of Mercury Pollution in Air in Urban Area of Riga Using Atomic Absorption Spectrometry

Bogans

Skudra

Svagere

et al. 2015

Sustainable Development, Knowledge Society and Smart Future Manufacturing Technologies

View full text Add to dashboard Cite

Toxicity of mercury and its compounds is well known, and they are considered as substances of heightened concern. Though mercury is to some extent released into the environment by natural processes such as volcanic eruptions, additional releases from anthropogenic sources have increased the environmental exposure and deposition significantly. There are many commonly used items containing mercury, for instance, mercury light bulbs, switches, and mercury thermometers, the disposal of which into trashcans can cause an increase of mercury concentration in the air of the local area. The paper reports mercury pollution surveys performed in several districts of Riga (the capital of Latvia). Using an RA 915+ Zeeman atomic absorption spectrometer, the concentration of mercury was measured in the air above objects of interest. The measurements mainly made from driving a car equipped with a GPS receiver have allowed the assignment of Hg concentration to a particular place to provide a digitised pollution database in geographic coordinates at different times. Results of the surveys show the background concentration of atmospheric mercury in Riga generally did not exceed 5 ng/m 3 while some places of increased mercury pollution need particular attention and clean-up. Examples of such surveys are shown.

show abstract

“…The number of water wells in the study area (inside the 3 rd Ring Road) is about 800 wells. However, treated domestic wastewater is also used for irrigation in Al-Khlail wadi at the northern part of the city (Shraim et al, 2011). During the last 20 years, the city starts to rely on seawater desalinations to face the increased demand on fresh water.…”

Section: Study Areamentioning

confidence: 99%

“…The operational parameters applied were listed elsewhere (Shraim et al, 2011). A Flame Photometer (PFP7, Jenway LTD, Felsted, England) was employed for sodium measurements.…”

Section: Equipmentmentioning

confidence: 99%

Quality Assessment of Groundwater of Almadinah Almunawarah City

Al-Muzaini¹

2013

Global NEST Journal

View full text Add to dashboard Cite

Renewable water resources in Saudi Arabia are limited with groundwater as the major source for water supply. This study was conducted to assess the quality of groundwater in Almadinah Almunawarah, Saudi Arabia. Water samples were collected from 60 wells in 2010. Physical and chemical parameters were examined. The results of colour, turbidity, odour, pH, and nitrite in all samples were below the local drinking water guideline values. The fluoride concentrations in 8% of the samples were higher than the guideline value. The taste in 87% of the samples was unacceptable. Intolerable levels of both total hardness and TDS were found in most of the samples (~ 83%). Nitrate levels were above the guideline value in 65% of sample. Most of the samples (80-87%) have failed the guidelines for sodium, chloride, and sulfate. On the other hand, none of the samples was found to contain Cr, Ni, Cu, Zn, Cd, Ba, and Pb exceeding the guideline values. However, 5% of the samples have ) was greater than the guideline value and 10% of the samples have Mg (range 159000-210000 µg L -1 ) above the limit. Although the water of the investigated wells does not satisfy many of the general drinking water guidelines due to the local environment and climate, most of the samples are in compliance with the guideline values for metals in drinking and irrigation water.

show abstract

Dental clinics: A point pollution source, not only of mercury but also of other amalgam constituents

Cited by 27 publications

References 32 publications

Increased Zn/Glutathione Levels and Higher Superoxide Dismutase-1 Activity as Biomarkers of Oxidative Stress in Women with Long-Term Dental Amalgam Fillings: Correlation between Mercury/Aluminium Levels (in Hair) and Antioxidant Systems in Plasma

Increased Zn/Glutathione Levels and Higher Superoxide Dismutase-1 Activity as Biomarkers of Oxidative Stress in Women with Long-Term Dental Amalgam Fillings: Correlation between Mercury/Aluminium Levels (in Hair) and Antioxidant Systems in Plasma

Analysis of Mercury Pollution in Air in Urban Area of Riga Using Atomic Absorption Spectrometry

Quality Assessment of Groundwater of Almadinah Almunawarah City

Contact Info

Product

Resources

About