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https://www.readbyqxmd.com/read/28938149/the-genetic-influence-in-fluorosis
#1
REVIEW
Sreemanta Pramanik, Depanwita Saha
Fluorosis, caused by ingestion of excess fluoride, is endemic in at least 25 countries across the globe, China and India being the worst affected among them. Dental, skeletal and non-skeletal are the major types of fluorosis affecting millions of people in these countries. A number of genetic epidemiological studies carried out by investigators have shown the evidence for association between genetic polymorphisms in candidate genes and differences in the susceptibility pattern of different types of fluorosis among individuals living in the same community and having the same environmental exposure...
September 15, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28927624/investigation-of-lanthanum-impregnated-cellulose-derived-from-biomass-as-an-adsorbent-for-the-removal-of-fluoride-from-drinking-water
#2
Ammavasi Nagaraj, Kishor Kumar Sadasivuni, Mariappan Rajan
High concentrations of fluoride in drinking water can cause the disease fluorosis. Our scope goal is to develop an effective biopolymeric adsorbent for the removal of fluoride to below a specific safety limit set by the World Health Organization. In this study, the natural adsorbent material cellulose was impregnated with lanthanum chloride and effectiveness in adsorbing fluoride was confirmed by FT-IR, XRD, and SEM coupled with EDX techniques. The adsorption data were analyzed by Freundlich, Langmuir, and Redlich-Peterson isotherms...
November 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28914255/microabrasion-remineralization-mab-re-an-innovative-approach-for-dental-fluorosis
#3
Anshula Neeraj Deshpande, Neelam Hasmukhbhi Joshi, Neha Rajesh Pradhan, Rameshwari Yahpal Raol
Enamel microabrasion is a noninvasive method that removes intrinsic and superficial defects from teeth aimed to improve dental esthetic with minimal loss of dental tissue. This case presentation describes the attempt for teeth color correction utilizing that conservative technique in a young girl whose maxillary anterior teeth presented an opaque white/brown stain. Along with microabrasion, an innovative approach of application of casein phosphopeptide-amorphous calcium phosphate crème on the tooth, and remineralization was carried out thereby reducing postoperative sensitivity of the treated tooth...
October 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28910727/gene-environment-interaction-does-fluoride-influence-the-reproductive-hormones-in-male-farmers-modified-by-er%C3%AE-gene-polymorphisms
#4
Qiang Ma, Hui Huang, Long Sun, Tong Zhou, Jingyuan Zhu, Xuemin Cheng, Lijv Duan, Zhiyuan Li, Liuxin Cui, Yue Ba
The occurrence of endemic fluorosis is derived from high fluoride levels in drinking water and industrial fumes or dust. Reproductive disruption is also a major harm caused by fluoride exposure besides dental and skeletal lesions. However, few studies focus on the mechanism of fluoride exposure on male reproductive function, especially the possible interaction of fluoride exposure and gene polymorphism on male reproductive hormones. Therefore, we conducted a cross-sectional study in rural areas of Henan province in China to explore the interaction between the estrogen receptor alpha (ERα) gene and fluoride exposure on reproductive hormone levels in male farmers living in the endemic fluorosis villages...
September 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28902318/prevalence-of-dental-fluorosis-in-mexico-2005-2015-a-literature-review
#5
Fátima Del Carmen Aguilar-Díaz, Federico Morales-Corona, Aline Cristina Cintra-Viveiro, Javier de la Fuente-Hernández
Objective: To perform a literature review regarding current dental fluorosis prevalence in Mexico reported from 2005 to 2015. Materials and methods: A comprehensive scientific literature review, in both English and Spanish, was performed in four databases up to June 2015. Search terms: fluorosis or dental fluorosis (mesh), prevalence (mesh), distribution (mesh), cases (mesh), epidemiology (mesh), Mexico. Results: 17 publications were included...
May 2017: Salud Pública de México
https://www.readbyqxmd.com/read/28895192/prevalence-and-extent-of-enamel-defects-in-the-permanent-teeth-of-8-year-old-nigerian-children
#6
Olushola Ibiyemi, Fatemeh V Zohoori, Ruth A Valentine, Simon Kometa, Anne Maguire
OBJECTIVES: Enamel formation is a vulnerable developmental process, susceptible to environmental influences such as excessive systemic fluoride (F) exposure and infant/childhood disease. This study determined prevalence and extent of developmental enamel defects (DDE) and dental fluorosis in 8-year-old Nigerians and explored associations with key predictors. METHODS: A sample of 322 healthy 8-year-olds (155 males, 167 females) from primary schools in lower and higher water F areas of (i) rural and (ii) urban parts of Oyo State in south-west Nigeria (n = 4 areas) (in which the mean (SD) F concentration of community water supplies ranged from 0...
September 11, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/28893041/evaluation-of-oral-health-status-among-5-15-year-old-school-children-in-shimoga-city-karnataka-india-a-cross-sectional-study
#7
Shivananda Gudal Soumya, Kukkalli Kamalaksharappa Shashibhushan, Muttugadur Chandrappa Pradeep, Prashant Babaji, Vundela Rajashekar Reddy
INTRODUCTION: Oral health is an integral part of general health. Dental problems can be avoided if identified at an early stage. There is no data on oral health status of school going children in Karnataka state's Shimoga city. AIM: To evaluate oral health status of school going children among 5-15-year-old in Shimoga city. MATERIALS AND METHODS: A cross-sectional study was conducted among 1458 government and private school children aged 5-6, 9-10 and 14-15 years...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28869054/onsite-defluoridation-system-for-drinking-water-treatment-using-calcium-carbonate
#8
Elaine Y Wong, Michael K Stenstrom
Fluoride in drinking water has several effects on teeth and bones. At concentrations of 1-1.5 mg/L, fluoride can strengthen enamel, improving dental health, but at concentrations above 1.5 to 4 mg/L can cause dental fluorosis. At concentrations of 4-10 mg/L, skeletal fluorosis can occur. There are many areas of the world that have excessive fluoride in drinking water, such as China, India, Sri Lanka, and the Rift Valley countries in Africa. Treatment solutions are needed, especially in poor areas where drinking water treatment plants are not available...
August 28, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28866833/voriconazole-induced-periostitis-deformans-serial-imaging-in-a-patient-with-anca-vasculitis
#9
S Cormican, N Adams, P O'Connell, A McErlean, D de Freitas
OBJECTIVES: A 61-year-old with acute granulomatosis and polyangiitis developed Aspergillus fumigatus pneumonia after admission to the intensive care unit with a small bowel perforation. This occurred after immunosuppression (intravenous methylprednisolone, intravenous cyclophosphamide, and plasmapheresis) for his initial presentation with stage 3 acute kidney injury. MATERIALS AND METHODS: The mycologist recommended long-term treatment with voriconazole after initial recovery...
September 2, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28865833/teeth-with-mild-and-moderate-enamel-fluorosis-demonstrate-increased-caries-susceptibility-in%C3%A2-vitro
#10
E Angeles Martinez-Mier, Frank Lippert
ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Higher fluorosis severity makes enamel less resistant to demineralization. Marín LM, Cury JA, Tenuta LMA, Castellanos JE, Martignon S. Caries Res 2016; 50:407-13. SOURCE OF FUNDING: Government: COLCIENCIAS (grant No. 2012-442) and foundations: FUNCAMP (Conv 4252) TYPE OF STUDY/DESIGN: In vitro study.
September 2017: Journal of Evidence-based Dental Practice
https://www.readbyqxmd.com/read/28865383/fluoride-concentrations-in-traditional-and-herbal-teas-health-risk-assessment
#11
Suchismita Das, Letuzia M de Oliveira, Evandro da Silva, Yungen Liu, Lena Q Ma
Traditional tea (Camellia sinensis) and herbal tea are being consumed across the world. However, long term consumption of tea can increase the chances of fluorosis owing to the presence of fluoride (F) in teas. Therefore, it is imperative to assess the health risk associated with tea consumption. The main objectives of this study were to: 1) estimate total F in 47 popular teas, including traditional and herbal teas and F concentrations in 1% (w/v) infusion of 5 min, and 2) assess the exposure risks of F from tea consumption in children and adults...
August 30, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28853514/-effect-of-maternal-health-and-prenatal-environmental-exposure-factors-on-tooth-development
#12
Wan Mian, Zhou Xuedong, Zheng Liwei
Odontogenesis is a consequence of a complex series of reciprocal signal interactions between odontogenic epithelium and neural crest-derived odontotgenic mesenchyme. These interactions result from a complex interplay of genetic and environmental factors. Given that a fetus develops in the mother, maternal health and environmental exposures have a great influence on tooth development. In this review, we focused on the key issues in the developmental defects of teeth induced by various types of maternal environmental factors, including environmental endocrine disruptors, joint action of two or more chemical exposures, and maternal health status...
August 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28851890/effect-of-fluoride-treatment-on-gene-expression-in-tea-plant-camellia-sinensis
#13
Qing-Sheng Li, Xiao-Ming Lin, Ru-Ying Qiao, Xin-Qiang Zheng, Jian-Liang Lu, Jian-Hui Ye, Yue-Rong Liang
Tea plant is a typical fluorine (F) accumulator. F concentration in mature tea leaves is several hundred times higher than that in normal field crops. Long-term consumption of teas with high level F will increase the risks of dental and skeletal fluorosis. The mechanism of F accumulation in tea stands unclear. RNA-Seq and digital gene expression (DGE) techniques were used to investigate the effect of F on the differential expressions of transcriptome in tea plant. The results showed that F content in mature tea leaves was increased with increase in F concentration of cultural solution and duration of F treatment time...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28840484/pulmonary-fluorosis-a-review
#14
Jaishabanu Ameeramja, Ekambaram Perumal
The increased industrialization and improvised human lifestyle lead to a surge in environmental pollution nowadays. Even the chemicals which are known as prophylactic agents were currently liable to be toxic. One among them is inorganic fluoride whose wider application in numerous processes makes it as an inevitable environmental contaminant and industrial pollutant. Although the systemic toxicity of fluoride has been extensively studied, still there is lacuna in the field of pulmonary fluoride toxicity. Hence, we have focused on the molecular mechanism of action of fluoride compounds on pulmonary system...
August 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28806687/mineralization-defects-are-comparable-in-fluorotic-impacted-human-teeth-and-fluorotic-mouse-incisors
#15
Rozita Jalali, Franck Guy, Samaneh Ghazanfari, Don Lyaruu, Leo van Ruijven, Pamela DenBesten, Stefania Martignon, Gina Castiblanco, Antonius L J J Bronckers
OBJECTIVE: Fluoride excess of 0.05-0.07mgF/kgbw/day in water or food additives like salt is the principal cause of endemic dental fluorosis. How fluoride causes these defects is not clear yet. Recent studies in rodents suggest that development of enamel fluorosis is associated with insufficient neutralization of protons released during the formation of hypermineralized lines. DESIGN: Here we examined whether hypermineralization could also be assessed by MicroCT in developing molar enamel of humans exposed to fluoride...
July 29, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28791514/evaluation-of-exposure-to-fluoride-in-child-population-of-north-argentina
#16
René Antonio Rocha, Marta Calatayud, Vicenta Devesa, Dinoraz Vélez
Fluoride is an important element for humans. It inhibits initiation and progression of dental caries and stimulates bone formation. However, excessive intake may lead to the appearance of dental and/or skeletal fluorosis and a decrease in intellectual coefficient in child populations. This study evaluates exposure to fluoride in the child population of Chaco province (Argentina) by analysis of drinking water, food and its bioaccessible fraction (quantity of fluoride solubilised by gastrointestinal digestion and available for intestinal absorption) and urine as a biomarker of internal dose...
August 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28770429/impact-of-urbanization-coupled-with-drought-situations-on-groundwater-quality-in-shallow-basalt-and-deeper-granite-aquifers-with-special-reference-to-fluoride-in-nanded-waghala-municipal-corporation-nanded-district-maharashtra-india
#17
Madhnure Pandith, R D Kaplay, S S Potdar, H Sangnor, A D Rao
Rapid expansion in urbanization and industrialization coupled with recent drought conditions has triggered unplanned groundwater development leading to severe stress on groundwater resources in many urban cities of India, particularly cities like Nanded, Maharashtra. In the quest of tapping drinking water requirement, due to recent drought conditions, people from the city are piercing through entire thickness of shallow basalt aquifers to reach productive deeper granite aquifers. Earlier reports from Nanded and surrounding districts suggest that deeper granite aquifer is contaminated with fluoride (geogenic)...
September 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28762354/a-comparison-of-various-minimally-invasive-techniques-for-the-removal-of-dental-fluorosis-stains-in-children
#18
Aarushi Gupta, Renuka Dhingra, Payal Chaudhuri, Anil Gupta
CONTEXT: Dental fluorosis is caused by successive exposure to high concentrations of fluoride during tooth development leading to enamel with lower mineral content and increased porosity. AIMS: The aim of the study was to evaluate and compare the effectiveness of minimally invasive techniques for the removal of dental fluorosis stains in children in vivo. DESIGN: Ninety children in the age group of 10-17 years were selected. MATERIALS AND METHODS: The study sample was equally and randomly divided into three groups; Group 1: In-office bleaching with 35% hydrogen peroxide (HP) activated by light-emitting diode (LED) bleaching unit (35% HP), Group 2: Enamel microabrasion (EM) followed by in-office bleaching with 44% carbamide peroxide gel (EM), Group 3: In-office bleaching with 5% sodium hypochlorite (5% NaOCl)...
July 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28762344/assessment-of-fluoride-retention-in-jowar-consuming-population-a-cross-sectional-study
#19
G Dhanu, R Shiny, R Havale, S P Shrutha
INTRODUCTION: Dental fluorosis is considered as a serious public health problem in India. Water is usually the major source of fluoride exposure, but this is not the case always as exposure to local factors like diet can be important in some situations. Earlier studies have shown that jowar (a millet) consumption interacts with fluoride in the body and elevate fluorosis. AIM AND OBJECTIVE: To determine the association between jowar consumption and severity of dental fluorosis...
July 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28738594/optical-sensor-for-fluoride-determination-in-tea-sample-based-on-evanescent-wave-interaction-and-fiber-optic-integration
#20
Yan Xiong, Jiayi Wu, Qing Wang, Jing Xu, Shenwen Fang, Jie Chen, Ming Duan
In this work, a miniaturized optical sensor was developed for fluoride determination in tea samples to evaluate their specific risks of fluorosis for public health based on evanescent-wave interaction. The sensor design was integrated on the optical fiber by utilizing the evanescent wave produced on the fiber surface to react with sensing reagents. According to the absorption change at 575nm, fluoride could be determined by colorimetric method and evaluated by Beer's law. With improved performances of small detection volume (1...
November 1, 2017: Talanta
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