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Dental mercury

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https://www.readbyqxmd.com/read/29146212/the-current-environmental-levels-of-endocrine-disruptors-mercury-cadmium-organochlorine-pesticides-and-pcbs-in-a-belgian-adult-population-and-their-predictors-of-exposure
#1
Catherine Pirard, Stephanie Compere, Katty Firquet, Corinne Charlier
A human biomonitoring study was carried out measuring the levels of endocrine disruptors in 252 participants (18-76 years old) recruited between February and May 2015 from the general population of Liege Province (Belgium). In this study, we reported the recent levels of cadmium and mercury in urine, some organochlorine pesticides and polychlorinated biphenyls (PCBs) in serum, and their relations to demographic characteristics, lifestyle behaviors and dietary habits. The median urinary levels of mercury and cadmium were 0...
October 31, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/29113700/high-performance-dental-resin-composites-with-hydrolytically-stable-monomers
#2
Xiaohong Wang, George Huyang, Sri Vikram Palagummi, Xiaohui Liu, Drago Skrtic, Carlos Beauchamp, Rafael Bowen, Jirun Sun
OBJECTIVE: The objectives of this project were to: 1) develop strong and durable dental resin composites by employing new monomers that are hydrolytically stable, and 2) demonstrate that resin composites based on these monomers perform superiorly to the traditional bisphenol A glycidyl dimethacrylate/triethylene glycol dimethacrylate (Bis-GMA/TEGDMA) composites under testing conditions relevant to clinical applications. METHODS: New resins comprising hydrolytically stable, ether-based monomer, i...
November 4, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29102860/presence-of-dental-signs-of-congenital-syphilis-in-pre-modern-specimens
#3
REVIEW
Stella Ioannou, Renata J Henneberg, Maciej Henneberg
OBJECTIVE: Tooth morphology can vary due to genetic factors, infectious diseases and other environmental stresses. Congenital syphilis is known to interrupt tooth formation i.e. odontogenesis and amelogenesis, producing specific dental characteristics. Variation of those characteristics can occur, resulting in dental signs "not typical" of the disease, however, they are described in the 19th century literature. Past treatments of congenital syphilis with mercury also interrupted dental processes resulting in significantly different dental signs...
October 20, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29057586/mercury-levels-in-hair-samples-of-dentists-a-comparative-study-in-sri-lanka
#4
Lumbini A Wijesekara, Rinzee Usoof, Sachindra S T Gamage, Ruwan Jayasinghe, Nandasena Gamage, Dileep De Silva, Sagarika Ekanayake
AIM: Elemental mercury is widely used in dentistry as dental amalgam. Hair samples constitute preferred biomarkers to determine the index of mercury exposure. In the absence of any published studies, the aim of the present study was to ascertain the level of mercury in a selected sample of dentists and controls in Sri Lanka. METHODS: Hair samples (.7 g) from dentists working in and around the Colombo district in Sri Lanka (n = 50) and controls (n = 50) were digested with sulfuric acid-potassium permanganate solution, and reduced to metallic mercury with stannous chloride...
October 22, 2017: Journal of Investigative and Clinical Dentistry
https://www.readbyqxmd.com/read/29052151/hair-mercury-and-risk-assessment-for-consumption-of-contaminated-seafood-in-residents-from-the-coast-of-the-persian-gulf-iran
#5
Narjes Okati, Abbas Esmaili-Sari
The health risks of mercury exposure due to the high consumption of aquatic were assessed for fishermen and non-fishermen families living on the Bandar Abbas, Bushehr, and Mahshahr cities located in the coast of Persian Gulf (Iran). The mean hair mercury concentration of people in Bandar Abbas, Bushehr, and Mahshahr cities was obtained 1.56 ± 0.17, 1.97 ± 0.22, and 5.12 ± 0.3 μg g(-1), respectively. Hair mercury concentration in 8.8% of people exceeded the no observed adverse effects level (NOAEL) of 10 μg g(-1) declared by the World Health Organization (WHO)...
October 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29043874/the-risk-of-occupational-exposure-to-mercury-vapor-in-some-public-dental-clinics-of-baghdad-city-iraq
#6
Enas Sultan Al-Zubaidi, Adel Mashaan Rabee
BACKGROUND: Dental workers are exposed to elevated levels of elemental mercury vapor substantially above the occupational exposure standards when placing or removing mercury/silver tooth restorations and disposing of mercury waste. This results in a significant increase in occupational exposure and risk of mercury intoxication. METHODS: To evaluate the occupational exposure of dental workers to amalgam in four dental clinics in Baghdad city, the concentrations of mercury vapor were measured seasonally from February to November 2016...
August 2017: Inhalation Toxicology
https://www.readbyqxmd.com/read/28924267/burnout-among-gynaecological-residents-in-lahore-pakistan-a-cross-sectional-survey
#7
Khadija Waheed, Naeem Liaqat, Amna Khanum, Sara Ejaz, Shamila Ijaz, Ambreen Butt, Fawad Ahmed Randhawa, Iffat Naheed, Salman Javed
OBJECTIVE: To determine the prevalence of burnout among gynaecological residents and factors associated with it. METHODS: This cross-sectional study was performed at the University Medical and Dental College, Faisalabad, Pakistan, from March to April 2016, and comprised female medical students. Participants were divided into groups on the basis of their ABO blood groups and on body mass index criteria. Blood groups were determined by simple conventional slide method...
September 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28889024/the-toxicology-of-mercury-current-research-and-emerging-trends
#8
REVIEW
Geir Bjørklund, Maryam Dadar, Joachim Mutter, Jan Aaseth
Mercury (Hg) is a persistent bio-accumulative toxic metal with unique physicochemical properties of public health concern since their natural and anthropogenic diffusions still induce high risk to human and environmental health. The goal of this review was to analyze scientific literature evaluating the role of global concerns over Hg exposure due to human exposure to ingestion of contaminated seafood (methyl-Hg) as well as elemental Hg levels of dental amalgam fillings (metallic Hg), vaccines (ethyl-Hg) and contaminated water and air (Hg chloride)...
November 2017: Environmental Research
https://www.readbyqxmd.com/read/28839293/frequency-of-different-blood-groups-and-its-association-with-bmi-and-blood-pressure-among-the-female-medical-students-of-faisalabad
#9
Shireen Jawed, Sadaf Zia, Sundus Tariq
OBJECTIVE: To determine the frequency of different blood groups among female medical students and to find the association of blood groups and body mass index with blood pressure. METHODS: This cross-sectional study was performed at the University Medical and Dental College, Faisalabad, Pakistan, from March to April 2016, and comprised female medical students. Participants were divided into groups on the basis of their ABO blood groups and on body mass index criteria...
August 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28782290/risk-of-subsequent-attention-deficit-hyperactivity-disorder-among-children-and-adolescents-with-amalgam-restorations-a-nationwide-longitudinal-study
#10
Po-Yen Lin, Jui Wang, Yu-Chih Chiang, Chen-Yin Lai, Hong-Ji Chang, Lin-Yang Chi
OBJECTIVES: Dental amalgam has been used as a common restorative material since the 1800s, but concerns have been raised regarding its purported neuropsychological effects due to the neurotoxicity of mercury. In this study, a nationwide population-based database was employed to investigate the association of dental amalgam restoration with the risk of attention-deficit/hyperactivity disorder (ADHD). METHODS: After matching, 88 068 young people with at least one tooth restoration during 2002-2010 and no ADHD history before 2001 were selected and then collected the further information until the end of 2011...
August 7, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/28734995/senior-oral-and-maxillofacial-surgery-resident-confidence-in-performing-invasive-temporomandibular-joint-procedures
#11
Mohmedvasim Momin, Michael Miloro, Louis G Mercuri, Alexander Munaretto, Michael R Markiewicz
PURPOSE: The purpose of this study was to evaluate the level of confidence that senior-level oral and maxillofacial surgery (OMS) residents have in the management of temporomandibular joint (TMJ) disorders, determine their exposure to various invasive TMJ procedures during training, and assess their confidence in performing those procedures on completion of residency. MATERIALS AND METHODS: A questionnaire was designed, and a link to a University of Illinois at Chicago Qualtrics Survey platform (Qualtrics, Provo, UT) was e-mailed to all program directors at Commission on Dental Accreditation-accredited OMS training programs in the United States...
October 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28727988/environmental-exposures-and-pediatric-kidney-function-and-disease-a-systematic-review
#12
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...
October 2017: Environmental Research
https://www.readbyqxmd.com/read/28718354/mercury-induced-motor-and-sensory-neurotoxicity-systematic-review-of-workers-currently-exposed-to-mercury-vapor
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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