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Dental mercury

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https://www.readbyqxmd.com/read/28727988/environmental-exposures-and-pediatric-kidney-function-and-disease-a-systematic-review
#1
REVIEW
Laura Y Zheng, Alison P Sanders, Jeffrey M Saland, Robert O Wright, Manish Arora
BACKGROUND: Environmental chemical exposures have been implicated in pediatric kidney disease. No appraisal of the available evidence has been conducted on this topic. METHODS: We performed a systematic review of the epidemiologic studies that assessed association of environmental exposures with measures of kidney function and disease in pediatric populations. The search period went through July 2016. RESULTS: We found 50 studies that met the search criteria and were included in this systematic review...
July 17, 2017: Environmental Research
https://www.readbyqxmd.com/read/28718354/mercury-induced-motor-and-sensory-neurotoxicity-systematic-review-of-workers-currently-exposed-to-mercury-vapor
#2
Cheryl A Fields, Jonathan Borak, Elan D Louis
The neurotoxicity of elemental mercury (Hg(0)) is well-recognized, but it is uncertain whether and for how long neurotoxicity persists; among studies that evaluated previously exposed workers, only one examined workers during and also years after exposure ceased. The aim of this review is to document the type, frequency, and dose-relatedness of objective neurological effects in currently exposed mercury workers and thereby provide first approximations of the effects one would have expected in previously exposed workers evaluated during exposure...
July 18, 2017: Critical Reviews in Toxicology
https://www.readbyqxmd.com/read/28711310/acquired-heterotopic-ossification-of-the-temporomandibular-joint
#3
REVIEW
L G Mercuri, B M Saltzman
Although the risk factors and diagnosis of heterotopic ossification (HO) are discussed in the orthopedics literature, the etiology of HO, as well as its prevention and management, remain theoretical. Furthermore, there is a lack of information in the literature regarding HO in temporomandibular joint replacement (TMJR). This article provides a qualitative review of information relative to the etiology, diagnosis, and management of HO to inform and encourage further investigation in TMJR. The orthopedic HO literature considered for this qualitative review was drawn from a comprehensive examination of the subject published previously by one of the authors...
July 12, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28695565/dental-patch-testing-in-patients-with-undifferentiated-oral-lichen-planus
#4
Shevya M Tiwari, Kurt Gebauer, Agnieszka M Frydrych, Sally Burrows
BACKGROUND/OBJECTIVES: Distinguishing between oral lichen planus (LP) and lichenoid reactions to dental restorations can be impossible on clinical and histopathological grounds. Epicutaneous patch testing is an investigation that may guide patients and physicians in making timely and costly decisions to replace or cover existing dental restorations. This study aimed to assess the role of epicutaneous patch testing with a battery of dental allergens in patients with undifferentiated oral LP...
July 11, 2017: Australasian Journal of Dermatology
https://www.readbyqxmd.com/read/28681046/long-term-in-vivo-effect-of-various-restorative-materials-on-enamel-and-dentin-of-primary-molars
#5
Elyiahu Mass, Alla Hassan, Ornit Cohen, Uri Zilberman
OBJECTIVE: To explore the long-term in-vivo effect of different dental restorative materials on the surrounding enamel and dentin, in primary molars. METHOD AND MATERIALS: Sixteen naturally exfoliated primary molars restored with amalgam, compomer, and glass-ionomer cement were collected after 2 to 5 years of function in the mouth. Four intact molars served as control. The teeth were sliced buccolingually and the ion content in the restorative material, the enamel, and the dentin surrounding the restoration was determined using a scanning electron microscopy-energy dispersive x-ray spectroscopy (SEM-EDS) program...
July 4, 2017: Quintessence International
https://www.readbyqxmd.com/read/28642517/green-dentistry-the-art-and-science-of-sustainable-practice
#6
P Mulimani
Dentistry is highly energy and resource intensive with significant environmental impact. Factors inherent in the profession such as enormous electricity demands of electronic dental equipment, voluminous water requirements, environmental effects of biomaterials (before, during and after clinical use), the use of radiation and the generation of hazardous waste involving mercury, lead etc have contributed towards this. With rising temperatures across the world due to global warming, efforts are being made worldwide to mitigate the effects of environmental damage by resorting to sustainability concepts and green solutions in a myriad of ways...
June 23, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28641283/-healing-of-amyotrophic-lateral-sclerosis-a-case-report
#7
Inge Mangelsdorf, Harald Walach, Joachim Mutter
BACKGROUND: Amyotrophic lateral sclerosis (ALS) is a devastating disease leading to death within 3-5 years in most cases. New approaches to treating this disease are needed. Here, we report a successful therapy. CASE REPORT: In a 49-year-old male patient suffering from muscle weakness and fasciculations, progressive muscular atrophy, a variant of ALS, was diagnosed after extensive examinations ruling out other diseases. Due to supposed mercury exposure from residual amalgam, the patient's teeth were restored...
2017: Complementary Medicine Research
https://www.readbyqxmd.com/read/28588813/severe-dermatitis-might-be-caused-by-a-cross-reaction-between-nickel-and-palladium-and-dental-amalgam-resolved-following-removal-of-dental-restorations
#8
Yoshiro Fujii
This report demonstrates a case of atopic dermatitis that was unresponsive to topical steroid therapy. This clinical report highlights the fact that metals used in dental treatment, such as mercury, as well as cross-reactions between nickel and palladium, may cause systemic hypersensitivity or toxicity.
June 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28501064/four-or-more-amalgam-fillings-correlate-with-higher-blood-mercury-levels-in-pregnant-women-but-not-high-enough-to-be-of-health-concern
#9
Stefanie L Russell
ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Dental associations with blood mercury in pregnant women. Golding J, Steer CD, Gregory S, Lowery T, Hibbeln JR, Taylor CM. Community Dent Oral Epidemiol 2016; 44: 216-22. SOURCE OF FUNDING: This study was funded by a combination of government (UK Medical Research Council), foundation/nonprofit (the Welcome Trust) and university (University of Bristol, UK) grants. TYPE OF STUDY/DESIGN: Cross-sectional...
June 2017: Journal of Evidence-based Dental Practice
https://www.readbyqxmd.com/read/28437002/dentists-restorative-decision-making-and-implications-for-an-amalgamless-profession-part-4-clinical-factors
#10
G Alexander, Hopcraft, M J Tyas, R H K Wong
BACKGROUND: The Minamata Convention embodies a world-wide reduction in the production and use of mercury and mercury-containing products and processes, including a phase-down of dental amalgam. This will change the approach to the use of direct restorative materials in the near future. There is little research as to the influence of clinical factors on dentists' decision-making which may be of use when determining the impact of any change. METHODS: An online survey relating to aspects of and attitudes to the use of direct restorative materials was distributed to all dentists who were members of the Australian Dental Association and/or Members or Fellows of the Royal Australasian College of Dental Surgeons...
April 24, 2017: Australian Dental Journal
https://www.readbyqxmd.com/read/28379072/biomarkers-of-mercury-toxicity-past-present-and-future-trends
#11
REVIEW
Vasco Branco, Sam Caito, Marcelo Farina, João Teixeira da Rocha, Michael Aschner, Cristina Carvalho
Mercury (Hg) toxicity continues to represent a global health concern. Given that human populations are mostly exposed to low chronic levels of mercurial compounds (methylmercury through fish, mercury vapor from dental amalgams, and ethylmercury from vaccines), the need for more sensitive and refined tools to assess the effects and/or susceptibility to adverse metal-mediated health risks remains. Traditional biomarkers, such as hair or blood Hg levels, are practical and provide a reliable measure of exposure, but given intra-population variability, it is difficult to establish accurate cause-effect relationships...
2017: Journal of Toxicology and Environmental Health. Part B, Critical Reviews
https://www.readbyqxmd.com/read/28344835/a-review-of-mercury-exposure-and-health-of-dental-personnel
#12
REVIEW
Natasha Nagpal, Silvana S Bettiol, Amy Isham, Ha Hoang, Leonard A Crocombe
Considerable effort has been made to address the issue of occupational health and environmental exposure to mercury. This review reports on the current literature of mercury exposure and health impacts on dental personnel. Citations were searched using four comprehensive electronic databases for articles published between 2002 and 2015. All original articles that evaluated an association between the use of dental amalgam and occupational mercury exposure in dental personnel were included. Fifteen publications from nine different countries met the selection criteria...
March 2017: Safety and Health At Work
https://www.readbyqxmd.com/read/28281590/bulk-fill-resin-based-composite-restorative-materials-a-review
#13
J Chesterman, A Jowett, A Gallacher, P Nixon
Resin-based composite (RBC) materials are increasingly being used for the restoration of posterior teeth. The increasing demand for aesthetic, tooth-coloured restorations coupled with the patient's concerns regarding the use of mercury containing restorations, has driven a surge in the use of RBC materials. With the Minamata Convention in 2013 calling for the phase-out of dental amalgam and dental schools increasingly teaching techniques for RBC restorations in posterior teeth, it is likely that the dental profession's reliance upon RBC for the restoration of posterior teeth will only increase...
March 10, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28236437/biocompatibility-of-biomaterials-lessons-learned-and-considerations-for-the-design-of-novel-materials
#14
REVIEW
Gottfried Schmalz, Kerstin M Galler
OBJECTIVES: Biocompatibility of dental materials has gained increasing interest during recent decades. Meanwhile, legal regulations and standard test procedures are available to evaluate biocompatibility. Herein, these developments will be exemplarily outlined and some considerations for the development of novel materials will be provided. METHODS: Different aspects including test selection, release of substances, barriers, tissue healing, antibacterial substances, nanoparticles and environmental aspects will be covered...
April 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28220332/increased-mercury-emissions-from-modern-dental-amalgams
#15
Ulf G Bengtsson, Lars D Hylander
All types of dental amalgams contain mercury, which partly is emitted as mercury vapor. All types of dental amalgams corrode after being placed in the oral cavity. Modern high copper amalgams exhibit two new traits of increased instability. Firstly, when subjected to wear/polishing, droplets rich in mercury are formed on the surface, showing that mercury is not being strongly bonded to the base or alloy metals. Secondly, high copper amalgams emit substantially larger amounts of mercury vapor than the low copper amalgams used before the 1970s...
April 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28209268/inorganic-mercury-prevents-the-differentiation-of-sh-sy5y-cells-amyloid-precursor-protein-microtubule-associated-proteins-and-ros-as-potential-targets
#16
Miguel Chin Chan, Elizabeth Bautista, Isabel Alvarado-Cruz, Betzabet Quintanilla-Vega, José Segovia
Exposure to mercury (Hg) occurs through different pathways and forms including methylmecury (MeHg) from seafood and rice, ethylmercury (EtHg), and elemental Hg (Hg(0)) from dental amalgams and artisanal gold mining. Once in the brain all these forms are transformed to inorganic Hg (I-Hg), where it bioaccumulates and remains for long periods. Hg is a well-known neurotoxicant, with its most damaging effects reported during brain development, when cellular key events, such as cell differentiation take place. A considerable number of studies report an impairment of neuronal differentiation due to MeHg exposure, however the effects of I-Hg, an important form of Hg found in brain, have received less attention...
May 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28103053/mercury-amalgam-diffusion-in-human-teeth-probed-using-femtosecond-libs
#17
Liciane Toledo Bello, Patricia Aparecida da Ana, Dário Santos, Francisco José Krug, Denise Maria Zezell, Nilson Dias Vieira, Ricardo Elgul Samad
In this work the diffusion of mercury and other elements from amalgam tooth restorations through the surrounding dental tissue (dentin) was evaluated using femtosecond laser-induced breakdown spectroscopy (fs-LIBS). To achieve this, seven deciduous and eight permanent extracted human molar teeth with occlusal amalgam restorations were half-sectioned and analyzed using pulses from a femtosecond laser. The measurements were performed from the amalgam restoration along the amalgam/dentin interface to the apical direction...
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28093013/long-term-changes-in-health-complaints-after-removal-of-amalgam-restorations
#18
Lars Björkman, Therese T Sjursen, Knut Dalen, Gunvor B Lygre, Trine Lise L Berge, Johanna Svahn, Birgitte F Lundekvam
OBJECTIVE: Concerns over adverse effects of mercury released from dental amalgam sometimes lead patients to request removal of their amalgam restorations. Several studies report improvement of subjective health after removal of amalgam restorations, but the mechanisms are unclear. The aim of this paper is to present data on long term changes in intensity of health complaints after amalgam removal in a group of patients with health complaints self-attributed to dental amalgam. Data from the five years follow-up in a clinical trial are presented and related to potential determinants of change...
April 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28055311/immunotoxicity-of-mercury-pathological-and-toxicological-effects
#19
REVIEW
Faheem Maqbool, Kamal Niaz, Fatima Ismail Hassan, Fazlullah Khan, Mohammad Abdollahi
Mercury (Hg) is toxic and hazardous metal that causes natural disasters in the earth's crust. Exposure to Hg occurs via various routes; like oral (fish), inhalation, dental amalgams, and skin from cosmetics. In this review, we have discussed the sources of Hg and its potential for causing toxicity in humans. In addition, we also review its bio-chemical cycling in the environment; its systemic, immunotoxic, genotoxic/carcinogenic, and teratogenic health effects; and the dietary influences; as well as the important considerations in risk assessment and management of Hg poisoning have been discussed in detail...
January 2, 2017: Journal of Environmental Science and Health. Part C, Environmental Carcinogenesis & Ecotoxicology Reviews
https://www.readbyqxmd.com/read/28054040/systematic-review-on-highly-viscous-glass-ionomer-cement-resin-coating-restorations-part-ii-%C3%A2-do-they-merge-minamata-convention-and-minimum-intervention-dentistry
#20
Andrej M Kielbassa, Georg Glockner, Michael Wolgin, Karl Glockner
BACKGROUND: With the Minamata Convention the use of mercury will be phased down, and this undoubtedly will have an effect on dental treatment regimens and economic resources. Composite resin restorations are considered viable alternatives to amalgam fillings; however, these will not be covered completely by health insurance systems in many countries. Recently, a high-viscosity glass-ionomer cement (hvGIC) processed with a resinous coating (RC) has been introduced, and has been marketed as a restorative material in load-bearing Class I cavities (and in Class II cavities with limited size), thus serving as a possible alternative to amalgam fillings...
2017: Quintessence International
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