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Seifi S, Mirzakouchaki B, Rafighi A, Aghanejad A, Hamidi AA, Shahrbaf S. Evaluation of the bisphenol released in the saliva after residual adhesive removal in orthodontic patients by using ultrasonic scaling and rotary system: A single-center randomized clinical trial. Am J Orthod Dentofacial Orthop 2023; 163:148-153. [PMID: 36396531 DOI: 10.1016/j.ajodo.2022.06.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 06/01/2022] [Accepted: 06/01/2022] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Bisphenol A (BPA) is a substance commonly used in dental materials with noxious properties. Monomers of this substance may be dissolved in the saliva and cause adverse effects. This study aimed to evaluate the amount of BPA released in the saliva after residual adhesive removal in orthodontic patients using an ultrasonic scaler (US) and tungsten carbide bur (TCB). METHODS This single-center randomized clinical trial was conducted on 40 subjects whose stainless-steel brackets were bonded directly with light-cured bonding and composite. The subjects were randomly divided into 2 equal groups (n = 20) of TCB or US according to the adhesive removal method. The salivary BPA level was determined using high-performance liquid chromatography-mass spectrometry. And adhesive cleaning time was measured by a stopwatch. Data were analyzed by SPSS using an independent t test and paired-samples t test (P <0.05). RESULTS The mean salivary BPA level was significantly lower in the TCB method than in the US method. (1.008 ± 0.061 μg/mL and 2.83 ± 0.24 μg/mL, respectively) (P <0.001). The mean adhesive cleanup time was significantly shorter in the TCB method than in the US method (8.86 ± 0.83 minutes and 13.20±1.02 minutes, respectively) (P <0.001). CONCLUSIONS According to the results, residual adhesive removal with TCB released less BPA in saliva and shortened the adhesive cleaning time than the US method. TRIAL REGISTRATION The trial was registered at the Iranian Registry of Clinical Trials (IRCT20200702047988N1). PROTOCOL The protocol was not published before trial commencement.
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Affiliation(s)
- Sara Seifi
- Department of Orthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behnam Mirzakouchaki
- Department of Orthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Ali Rafighi
- Department of Orthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ayuob Aghanejad
- Research Centre for Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Asghar Hamidi
- Research Centre for Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shirin Shahrbaf
- Academic Unit of Restorative Dentistry, the University of Sheffield, Sheffield, United Kingdom
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Worthington HV, Khangura S, Seal K, Mierzwinski-Urban M, Veitz-Keenan A, Sahrmann P, Schmidlin PR, Davis D, Iheozor-Ejiofor Z, Rasines Alcaraz MG. Direct composite resin fillings versus amalgam fillings for permanent posterior teeth. Cochrane Database Syst Rev 2021; 8:CD005620. [PMID: 34387873 PMCID: PMC8407050 DOI: 10.1002/14651858.cd005620.pub3] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Traditionally, amalgam has been used for filling cavities in posterior teeth, and it continues to be the restorative material of choice in some low- and middle-income countries due to its effectiveness and relatively low cost. However, there are concerns over the use of amalgam restorations (fillings) with regard to mercury release in the body and the environmental impact of mercury disposal. Dental composite resin materials are an aesthetic alternative to amalgam, and their mechanical properties have developed sufficiently to make them suitable for restoring posterior teeth. Nevertheless, composite resin materials may have potential for toxicity to human health and the environment. The United Nations Environment Programme has established the Minamata Convention on Mercury, which is an international treaty that aims "to protect the [sic] human health and the environment from anthropogenic emissions and releases of mercury and mercury compounds". It entered into force in August 2017, and as of February 2021 had been ratified by 127 governments. Ratification involves committing to the adoption of at least two of nine proposed measures to phase down the use of mercury, including amalgam in dentistry. In light of this, we have updated a review originally published in 2014, expanding the scope of the review by undertaking an additional search for harms outcomes. Our review synthesises the results of studies that evaluate the long-term effectiveness and safety of amalgam versus composite resin restorations, and evaluates the level of certainty we can have in that evidence. OBJECTIVES To examine the effects (i.e. efficacy and safety) of direct composite resin fillings versus amalgam fillings. SEARCH METHODS An information specialist searched five bibliographic databases up to 16 February 2021 and used additional search methods to identify published, unpublished and ongoing studies SELECTION CRITERIA: To assess efficacy, we included randomised controlled trials (RCTs) comparing dental composite resin with amalgam restorations in permanent posterior teeth that assessed restoration failure or survival at follow-up of at least three years. To assess safety, we sought non-randomised studies in addition to RCTs that directly compared composite resin and amalgam restorative materials and measured toxicity, sensitivity, allergy, or injury. DATA COLLECTION AND ANALYSIS We used standard methodological procedures expected by Cochrane. MAIN RESULTS We included a total of eight studies in this updated review, all of which were RCTs. Two studies used a parallel-group design, and six used a split-mouth design. We judged all of the included studies to be at high risk of bias due to lack of blinding and issues related to unit of analysis. We identified one new trial since the previous version of this review (2014), as well as eight additional papers that assessed safety, all of which related to the two parallel-group studies that were already included in the review. For our primary meta-analyses, we combined data from the two parallel-group trials, which involved 1645 composite restorations and 1365 amalgam restorations in 921 children. We found low-certainty evidence that composite resin restorations had almost double the risk of failure compared to amalgam restorations (risk ratio (RR) 1.89, 95% confidence interval (CI) 1.52 to 2.35; P < 0.001), and were at much higher risk of secondary caries (RR 2.14, 95% CI 1.67 to 2.74; P < 0.001). We found low-certainty evidence that composite resin restorations were not more likely to result in restoration fracture (RR 0.87, 95% CI 0.46 to 1.64; P = 0.66). Six trials used a split-mouth design. We considered these studies separately, as their reliability was compromised due to poor reporting, unit of analysis errors, and variability in methods and findings. Subgroup analysis showed that the findings were consistent with the results of the parallel-group studies. Three trials investigated possible harms of dental restorations. Higher urinary mercury levels were reported amongst children with amalgam restorations in two trials, but the levels were lower than what is known to be toxic. Some differences between amalgam and composite resin groups were observed on certain measures of renal, neuropsychological, and psychosocial function, physical development, and postoperative sensitivity; however, no consistent or clinically important harms were found. We considered that the vast number of comparisons made false-positive results likely. There was no evidence of differences between the amalgam and composite resin groups in neurological symptoms, immune function, and urinary porphyrin excretion. The evidence is of very low certainty, with most harms outcomes reported in only one trial. AUTHORS' CONCLUSIONS Low-certainty evidence suggests that composite resin restorations may have almost double the failure rate of amalgam restorations. The risk of restoration fracture does not seem to be higher with composite resin restorations, but there is a much higher risk of developing secondary caries. Very low-certainty evidence suggests that there may be no clinically important differences in the safety profile of amalgam compared with composite resin dental restorations. This review supports the utility of amalgam restorations, and the results may be particularly useful in parts of the world where amalgam is still the material of choice to restore posterior teeth with proximal caries. Of note, however, is that composite resin materials have undergone important improvements in the years since the trials informing the primary analyses for this review were conducted. The global phase-down of dental amalgam via the Minamata Convention on Mercury is an important consideration when deciding between amalgam and composite resin dental materials. The choice of which dental material to use will depend on shared decision-making between dental providers and patients in the clinic setting, and local directives and protocols.
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Affiliation(s)
- Helen V Worthington
- Cochrane Oral Health, Division of Dentistry, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Sara Khangura
- Canadian Agency for Drugs and Technologies in Health (CADTH), Ottawa, Canada
| | - Kelsey Seal
- Canadian Agency for Drugs and Technologies in Health (CADTH), Ottawa, Canada
| | | | - Analia Veitz-Keenan
- Department of Oral Maxillofacial Pathology, Radiology and Medicine, New York University College of Dentistry, New York, USA
| | - Philipp Sahrmann
- Clinic of Conservative and Preventive Dentistry, Center for Dental and Oral Medicine and Maxillo-Facial Surgery, University of Zurich, Zurich, Switzerland
| | - Patrick Roger Schmidlin
- Clinic of Conservative and Preventive Dentistry, Center for Dental and Oral Medicine and Maxillo-Facial Surgery, University of Zurich, Zurich, Switzerland
| | - Dell Davis
- Texas Medical Center Library, Houston Academy of Medicine, Houston, USA
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Gallusi G, Libonati A, Piro M, Di Taranto V, Montemurro E, Campanella V. Is Dental Amalgam a Higher Risk Factor rather than Resin-Based Restorations for Systemic Conditions? A Systematic Review. MATERIALS 2021; 14:ma14081980. [PMID: 33920968 PMCID: PMC8071234 DOI: 10.3390/ma14081980] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/12/2021] [Accepted: 04/12/2021] [Indexed: 11/16/2022]
Abstract
Objective: The aim of this study was to confirm the hypothesis that patients with one or more amalgam restorations have an increased risk for systemic diseases rather than patients with resin-based restorations. Data: The data search produced an initial 3568 total number of records. All titles and abstract were reviewed by five independent examiners, and only 36 records were selected for full text in depth examination. Out of these, only nine publications matched the inclusion criteria and were included in this systematic review. Sources: Electronic databases (MEDLINE, Scopus, Embase, and Web of Knowledge) were searched up to June 2019. In addition, a manual search was carried out on journals related to this topic. Study selection: All selected human clinical studies compared patients with dental amalgam restorations to patients with non-amalgam restorations on restorative material related diseases/health conditions with at least 50 patients and a reasonable follow up. The systemic effects of dental restorations were analyzed. As for any systemic effects, there was no difference between amalgam and composite restoration. Conclusions: With the limitations of the few available randomized controlled trials (RCTs) on the matter, amalgam restorations, similarly to other modern resin-based materials, were not related to an increased risk of systemic diseases or conditions. Clinical significance: On the basis of the available RCTs, amalgam restorations, if compared with resin-based fillings, do not show an increased risk for systemic diseases. There is still insufficient evidence to exclude or demonstrate any direct influence on general health. The removal of old amalgam restorations and their substitution with more modern adhesive restorations should be performed only when clinically necessary and not just for material concerns. In order to better evaluate the safety of dental amalgam compared to other more modern restorative materials, further RCTs that consider important parameters such as long and uniform follow up periods, number of restorations per patient, and sample populations representative of chronic or degenerative diseases are needed.
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Kahn LG, Philippat C, Nakayama SF, Slama R, Trasande L. Endocrine-disrupting chemicals: implications for human health. Lancet Diabetes Endocrinol 2020; 8:703-718. [PMID: 32707118 PMCID: PMC7437820 DOI: 10.1016/s2213-8587(20)30129-7] [Citation(s) in RCA: 306] [Impact Index Per Article: 76.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 03/03/2020] [Accepted: 04/02/2020] [Indexed: 12/27/2022]
Abstract
Since reports published in 2015 and 2016 identified 15 probable exposure-outcome associations, there has been an increase in studies in humans of exposure to endocrine-disrupting chemicals (EDCs) and a deepened understanding of their effects on human health. In this Series paper, we have reviewed subsequent additions to the literature and identified new exposure-outcome associations with substantial human evidence. Evidence is particularly strong for relations between perfluoroalkyl substances and child and adult obesity, impaired glucose tolerance, gestational diabetes, reduced birthweight, reduced semen quality, polycystic ovarian syndrome, endometriosis, and breast cancer. Evidence also exists for relations between bisphenols and adult diabetes, reduced semen quality, and polycystic ovarian syndrome; phthalates and prematurity, reduced anogenital distance in boys, childhood obesity, and impaired glucose tolerance; organophosphate pesticides and reduced semen quality; and occupational exposure to pesticides and prostate cancer. Greater evidence has accumulated than was previously identified for cognitive deficits and attention-deficit disorder in children following prenatal exposure to bisphenol A, organophosphate pesticides, and polybrominated flame retardants. Although systematic evaluation is needed of the probability and strength of these exposure-outcome relations, the growing evidence supports urgent action to reduce exposure to EDCs.
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Affiliation(s)
- Linda G Kahn
- Department of Pediatrics, New York University, New York, NY, USA
| | - Claire Philippat
- University Grenoble Alpes, Inserm, CNRS, Team of Environmental Epidemiology applied to Reproduction and Respiratory Health, Institute for Advanced Biosciences, Grenoble, France
| | - Shoji F Nakayama
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - Rémy Slama
- University Grenoble Alpes, Inserm, CNRS, Team of Environmental Epidemiology applied to Reproduction and Respiratory Health, Institute for Advanced Biosciences, Grenoble, France
| | - Leonardo Trasande
- Department of Pediatrics, New York University, New York, NY, USA; Department of Environmental Medicine, and Department of Population Health, New York University Grossman School of Medicine and New York University School of Global Public Health, New York University, New York, NY, USA.
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5
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Berge TLL, Lygre GB, Lie SA, Lindh CH, Björkman L. Bisphenol A in human saliva and urine before and after treatment with dental polymer-based restorative materials. Eur J Oral Sci 2019; 127:435-444. [PMID: 31392814 PMCID: PMC6790658 DOI: 10.1111/eos.12647] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/01/2019] [Indexed: 12/24/2022]
Abstract
The aim of this study was to quantify bisphenol A (BPA) concentrations in saliva and urine before and after treatment with dental polymer-based restorative materials to assess if placement of this material is associated with increased BPA levels in saliva and urine. Twenty individuals in need of at least one dental restoration with polymer-based restorative material were included in this study. The participants were instructed to abstain from eating, drinking, and brushing their teeth for at least 10 h prior to sampling. Saliva and urine were collected before and 10 min (saliva only), 1 h, 24 h, and 1 wk after treatment. Samples were stored at -80°C before analyses. BPA in saliva and urine was determined with liquid chromatography/mass spectrometry. Linear mixed effects regression models were used for statistical analyses. There was a statistically significant increase of salivary BPA concentration directly after placement of the dental polymer-based restorations. Following placement, the concentration of BPA decreased exponentially with time. One week after treatment the BPA level in saliva was only marginally higher than before treatment. In urine, no statistically significant change of the BPA concentration was detected after treatment.
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Affiliation(s)
- Trine L. L. Berge
- Dental Biomaterials Adverse Reaction UnitNORCE Norwegian Research Centre ASBergenNorway
- Oral Health Centre of Expertise in Western Norway, HordalandBergenNorway
| | - Gunvor B. Lygre
- Dental Biomaterials Adverse Reaction UnitNORCE Norwegian Research Centre ASBergenNorway
| | - Stein A. Lie
- Department of Clinical DentistryFaculty of MedicineUniversity of BergenBergenNorway
| | - Christian H. Lindh
- Division of Occupational and Environmental MedicineLund UniversityLundSweden
| | - Lars Björkman
- Dental Biomaterials Adverse Reaction UnitNORCE Norwegian Research Centre ASBergenNorway
- Department of Clinical DentistryFaculty of MedicineUniversity of BergenBergenNorway
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Aberkane F, Barakat A, Elaissari A, Zine N, Bendaikha T, Errachid A. Electrochemical Sensor Based on Thioether Oligomer Poly(N‐vinylpyrrolidone)‐modified Gold Electrode for Bisphenol A Detection. ELECTROANAL 2019. [DOI: 10.1002/elan.201900060] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Fairouz Aberkane
- University of Batna 1, Laboratory LCCE, Faculty of matter sciencesDepartment of chemistry 05000 Batna Algeria
- Univ LyonUniversity Claude Bernard Lyon 1, CNRS, LAGEP-UMR 5007 F-69622 Lyon France
- Univ LyonUniversity Claude Bernard Lyon 1, CNRS, ISA-UMR 5280 F-69622 Lyon France
| | - Abdoullatif Barakat
- Univ LyonUniversity Claude Bernard Lyon 1, CNRS, ISA-UMR 5280 F-69622 Lyon France
| | - Abdelhamid Elaissari
- Univ LyonUniversity Claude Bernard Lyon 1, CNRS, LAGEP-UMR 5007 F-69622 Lyon France
| | - Nadia Zine
- Univ LyonUniversity Claude Bernard Lyon 1, CNRS, ISA-UMR 5280 F-69622 Lyon France
| | - Tahar Bendaikha
- University of Batna 1, Laboratory LCCE, Faculty of matter sciencesDepartment of chemistry 05000 Batna Algeria
| | - Abdelhamid Errachid
- Univ LyonUniversity Claude Bernard Lyon 1, CNRS, ISA-UMR 5280 F-69622 Lyon France
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7
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Löfroth M, Ghasemimehr M, Falk A, Vult von Steyern P. Bisphenol A in dental materials - existence, leakage and biological effects. Heliyon 2019; 5:e01711. [PMID: 31193754 PMCID: PMC6538958 DOI: 10.1016/j.heliyon.2019.e01711] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 09/18/2018] [Accepted: 05/08/2019] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE Recently, questions have been raised concerning the potential endocrine disrupting effects of bisphenol A (BPA). This substance is a constituent in many different products which we frequently come into contact with, such as food containers and receipts. Resin-based dental filling materials are another source of exposure, although according to previous studies the amount and potential risks are not clear. Thus, the aims of the present study were (1) to identify if direct dental filling materials are liable to leak BPA and (2) to investigate if this leakage could lead to any adverse effects on health. MATERIALS AND METHODS A literature search was made with PubMed as the primary source, subsequently complemented with reference tracking. RESULTS A total of 26 articles were included, 24 of which were used for the first aim (leakage) and 2 for the second aim (health risks). The majority of studies, including all in vivo studies, showed leakage of BPA from dental materials in various amounts and during different time intervals. The findings showed a contradiction in results regarding the connection between dental materials and adverse health effects. CONCLUSIONS There is leakage of BPA from some dental materials, but critical levels are not evident. Bis-DMA contents might convert to BPA in the oral cavity. There is a contradiction between in vitro and in vivo studies concerning BPA leakage and finally, there is a lack of studies investigating the association between BPA exposure and its adverse effects on human health.
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Affiliation(s)
- M. Löfroth
- Department of Materials Science and Technology, Faculty of Odontology, Malmö University, Malmö, Sweden
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Bakhurji E, Scott T, Sohn W. Factors Associated with Pediatric Dentists’ Choice of Amalgam: Choice-Based Conjoint Analysis Approach. JDR Clin Trans Res 2019; 4:246-254. [DOI: 10.1177/2380084418822977] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- E. Bakhurji
- Preventive Dental Sciences Department, Imam Abdulrahman Bin Faisal University, College of Dentistry, Dammam, Saudi Arabia
| | - T. Scott
- Department of Health Policy and Health Services Research, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA
| | - W. Sohn
- University of Sydney School of Dentistry, Faculty of Medicine and Health, Sydney, Australia
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Laimer J, Henn R, Helten T, Sprung S, Zelger B, Zelger B, Steiner R, Schnabl D, Offermanns V, Bruckmoser E, Huck CW. Amalgam tattoo versus melanocytic neoplasm - Differential diagnosis of dark pigmented oral mucosa lesions using infrared spectroscopy. PLoS One 2018; 13:e0207026. [PMID: 30399191 PMCID: PMC6219804 DOI: 10.1371/journal.pone.0207026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 10/22/2018] [Indexed: 12/14/2022] Open
Abstract
Background Dark pigmented lesions of the oral mucosa can represent a major diagnostic challenge. A biopsy is usually required to determine the nature of such intraoral discolorations. This study investigates the potential use of infrared spectroscopy for differential diagnosis of amalgam tattoos versus benign or malignant melanocytic neoplasms. Materials and methods For this retrospective study, formalin-fixed paraffin-embedded tissue (FFPE) specimens of dark pigmented lesions concerning the oral mucosa or the lip were investigated using mid infrared spectroscopy. The samples were chosen from patients who had undergone a mucosal biopsy at the University Hospital Innsbruck (Austria) between the years 2000 and 2017. Principal component analysis was used for data exploration. Evaluation was based on the superimposition of the recorded spectra and the corresponding histologic slides. Results In total, 22 FFPE specimens were analyzed. Clear differences were found between amalgam and non-amalgam samples. A general weakening of the penetrating infrared radiation allowed for unspecific discrimination between these two classes. An overall accuracy in predicting the correct class of 95.24% was achieved. Conclusion Infrared spectroscopy appears to be a suitable technique to differentiate between amalgam tattoos and melanocytic lesions in FFPE samples. It could potentially be applied in vivo, too, serving as a non-invasive diagnostic tool for intraoral dark pigmented lesions.
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Affiliation(s)
- Johannes Laimer
- University Hospital for Craniomaxillofacial and Oral Surgery, Innsbruck, Austria
| | - Raphael Henn
- Institute of Analytical Chemistry and Radiochemistry, Innsbruck, Austria
| | - Tom Helten
- University Hospital for Craniomaxillofacial and Oral Surgery, Innsbruck, Austria
| | - Susanne Sprung
- Institute of Pathology, Medical University, Innsbruck, Austria
| | - Bettina Zelger
- Institute of Pathology, Medical University, Innsbruck, Austria
| | - Bernhard Zelger
- University Hospital for Dermatology, Venereology and Allergology, Innsbruck, Austria
| | - René Steiner
- University Hospital for Dental Prosthetics and Restorative Dentistry, Innsbruck, Austria
| | - Dagmar Schnabl
- University Hospital for Dental Prosthetics and Restorative Dentistry, Innsbruck, Austria
| | - Vincent Offermanns
- University Hospital for Craniomaxillofacial and Oral Surgery, Innsbruck, Austria
| | | | - Christian W. Huck
- Institute of Analytical Chemistry and Radiochemistry, Innsbruck, Austria
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Chalapud M, Mutis G, Muñoz A, Tobar J, Sepúlveda W, Martínez C, Moreno F. Cambios microscópicos in vitro de cuerpos de prueba de amalgama de plata sometidos a altas temperaturas observados mediante microscopía electrónica de barrido. ACTA ODONTOLÓGICA COLOMBIANA 2018. [DOI: 10.15446/aoc.v8n2.73709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Objetivo: describir los cambios microscópicos in vitro de 27 cuerpos de prueba elaborados en amalgama de plata de tres marcas comerciales (Contour® Kerr®, Admix® SDI® y Nu Alloy® Newstethic®) sometidos a altas temperaturas (200ºC, 400ºC y 600ºC) observados mediante microscopia electrónica de barrido. Materiales y métodos: estudio observacional descriptivo, de corte transversal y de naturaleza pseudo-experimental que analizó el comportamiento in vitro de 27 cuerpos de prueba elaborados en tres marcas comerciales de amalgama de plata (Contour® Kerr®, Admix® SDI® y Nu Alloy® Newstethic®) sometidos a altas temperaturas (200ºC, 400ºC, 600ºC). Resultados: las tres marcas comerciales de amalgama de plata empleadas en este estudio tuvieron un comportamiento similar, excepto en el comportamiento de los nódulos de plata. Estos aparecieron a los 200ºC en Admix® SDI® y a los 400ºC en Contour® Kerr® y Nu Alloy® Newstethic®. El análisis en microscopía electrónica de barrido y espectrofotometría de la superficie de los cuerpos de prueba evidenció el aumento estadísticamente significativo (p<0,05) del porcentaje de peso atómico de Hg, Cu y Sn. Conclusiones: los cuerpos de prueba de las tres marcas comerciales de amalgama de plata sufren cambios en su microestructura en la medida que aumenta la temperatura. La formación de los nódulos de Ag fue explicada como una consecuencia del comportamiento de la fase gamma 1 de Ag-Hg al aumentar la temperatura, la cual empieza a disociarse a los 200ºC en Admix® SDI® y a los 400ºC en Contour® Kerr® y Nu Alloy® Newstethic®.
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Becher R, Wellendorf H, Sakhi AK, Samuelsen JT, Thomsen C, Bølling AK, Kopperud HM. Presence and leaching of bisphenol a (BPA) from dental materials. ACTA BIOMATERIALIA ODONTOLOGICA SCANDINAVICA 2018; 4:56-62. [PMID: 29868625 PMCID: PMC5974758 DOI: 10.1080/23337931.2018.1476869] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 05/09/2018] [Indexed: 12/16/2022]
Abstract
BPA has been reported to leach from some resin based dental restorative materials and materials used for orthodontic treatment. To confirm and update previous findings, especially in light of the new temporary lower threshold value for tolerable daily BPA intake, we have investigated the leaching of BPA from 4 composite filling materials, 3 sealants and 2 orthodontic bonding materials. The materials were either uncured and dissolved in methanol or cured. The cured materials were kept in deionized water for 24 hours or 2 weeks. Samples were subsequently analyzed by ultra-performance liquid chromatography coupled to mass spectrometry (UPLC-MS-MS). The composite filling material Tetric EvoFlow® and the fissure sealant DELTON® showed significantly higher levels of BPA leaching compared to control samples for all test conditions (uncured, 24 h leaching and 2 weeks leaching). There were no significant differences in amount of leached BPA for any of the tested materials after 24 hours compared to 2 weeks. These results show that BPA is still released from some dental materials despite the general concern about potential adverse effects of BPA. However, the amounts of BPA were relatively low and most likely represent a very small contribution to the total BPA exposure.
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Affiliation(s)
- Rune Becher
- Nordic Institute of Dental Materials (NIOM), Oslo, Norway.,Norwegian Institute of Public Health, Oslo, Norway
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Association of Endocrine Disrupting Chemicals, Bisphenol A and Phthalates, with Childhood Obesity: A Systematic Review. JOURNAL OF PEDIATRICS REVIEW 2017. [DOI: 10.5812/jpr.11894] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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13
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Bakhurji E, Scott T, Mangione T, Sohn W. Dentists' perspective about dental amalgam: current use and future direction. J Public Health Dent 2017; 77:207-215. [DOI: 10.1111/jphd.12198] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 11/14/2016] [Indexed: 12/01/2022]
Affiliation(s)
- Eman Bakhurji
- Preventive Dental Sciences Department; University of Dammam, College of Dentistry; Saudi Arabia
| | - Thayer Scott
- Department of Health Policy and Health Services Research; Boston University Henry M. Goldman School of Dental Medicine; Boston, MA, USA
| | - Thomas Mangione
- Department of Epidemiology; Boston University School of Public Health; Boston, MA, USA
| | - Woosung Sohn
- Department of Health Policy and Health Services Research; Boston University Henry M. Goldman School of Dental Medicine; Boston, MA, USA
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Maserejian NN, Trachtenberg FL, Wheaton OB, Calafat AM, Ranganathan G, Kim HY, Hauser R. Changes in urinary bisphenol A concentrations associated with placement of dental composite restorations in children and adolescents. J Am Dent Assoc 2016; 147:620-30. [PMID: 27083778 PMCID: PMC4967008 DOI: 10.1016/j.adaj.2016.02.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 02/08/2016] [Accepted: 02/13/2016] [Indexed: 11/24/2022]
Abstract
BACKGROUND Bisphenol A-glycidyl methacrylate (bis-GMA)-based dental composite restorations may release bisphenol A (BPA). The authors assessed changes in urinary BPA concentrations over a 6-month follow-up period in children and adolescents who received bis-GMA-based restorations. METHODS The authors collected data from 91 study participants aged 3 to 17 years who needed composite restorations. Participants provided urine samples and information on BPA-related exposures before and at approximately 1 day, 14 days, and 6 months after treatment. The authors used multivariable linear regression models to test associations between the number of surface restorations placed and the changes in urinary BPA concentrations. RESULTS Participants had a mean (standard deviation [SD]) of 1.4 (1.0) for surfaces restored with composite at the first treatment visit and 2.3 (1.6) for surfaces restored during the entire study period. Mean (SD) change in urinary BPA concentrations between pretreatment and day 1 was 1.71 (9.94) nanograms per milliliter overall and 0.87 (5.98) after excluding 1 participant who had 8 surfaces restored at the visit. Overall, the authors observed an association between a greater number of composite surface restorations placed and higher urinary BPA concentrations in the 1-day sample (posterior-occlusal exponentiated coefficients [e(β)] = 1.47; 95% confidence interval [CI], 1.18-1.83; P < .001), but the association was attenuated after the authors restricted the sample to the 88 participants who had up to 4 restorations (e(β) = 1.19; 95% CI, 0.86-1.64), and they did not observe any association using 14-day (e(β) = 0.94; 95% CI, 0.75-1.18) or 6-month (e(β) = 0.88; 95% CI, 0.74-1.04) samples. CONCLUSIONS Placement of bis-GMA-based restorations in children and adolescents may produce transient increases in urinary BPA concentrations that are no longer detectable in urine samples taken approximately 14 days or 6 months after treatment. After placement of a few restorations, increases in urinary BPA concentrations may not be detectable, owing to a high level of variation in background BPA exposure. PRACTICAL IMPLICATIONS These results suggest that leaching of BPA from newly placed composite restorations ceases to be detectable in urine within 2 weeks after restoration placement. The potential human health impact of such short-term exposure remains uncertain.
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Milosevic M. Polymerization Mechanics of Dental Composites – Advantages and Disadvantages. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.proeng.2016.06.672] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Arcos C, Díaz JD, Canencio K, Rodríguez D, Viveros C, Vega J, Lores J, Sinisterra G, Sepúlveda W, Moreno F. In Vitro Description of Macroscopic Changes of Dental Amalgam Discs Subject to High Temperatures to Forensic Purposes. THE JOURNAL OF FORENSIC ODONTO-STOMATOLOGY 2015; 33:8-18. [PMID: 26851445 PMCID: PMC5734811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To describe the behavior of 45 discs of dental amalgam of known dimension prepared from three commercially available brands of dental amalgam (Contour® Kerr®-USA, Admix® SDI®-Australia and Nu Alloy® Newstethic®-Colombia) when subjected to the action of high temperatures (200 °C, 400 °C, 600 °C, 800 °C, 1000 °C). It was hoped to establish parameters that could be used for human dental identification in cases of charred, burned or incinerated human remains. MATERIALS AND METHODS A pseudo-experimental descriptive in-vitro study was designed to describe the macroscopic physical changes to the surface of 45 discs of pre-prepared amalgam of three commercially available brands exposed to a range of high temperatures. RESULTS Characteristic and repetitive physical changes were a noticeable feature of the discs of amalgam of each brand of amalgam subjected to the different temperature ranges. These physical changes included changes in dimensional stability, changes in texture, changes in colour, changes in the appearance of fissures and cracks and changes in the fracture and fragmentation of the sample. CONCLUSIONS The characteristics of dental amalgam may be of assistance in cases of human identification where charred, burned or incinerated human remains are a feature and where fingerprints or other soft tissue features are unavailable.
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Affiliation(s)
- Carlos Arcos
- School of Dentistry at Universidad del Valle, Cali, Colombia
| | - Juan-David Díaz
- School of Dentistry at Universidad del Valle, Cali, Colombia
| | - Kenny Canencio
- School of Dentistry at Universidad del Valle, Cali, Colombia
| | - Diana Rodríguez
- School of Dentistry at Universidad del Valle, Cali, Colombia
| | - Carlos Viveros
- School of Dentistry at Universidad del Valle, Cali, Colombia
| | - Jonathan Vega
- School of Dentistry at Universidad del Valle, Cali, Colombia
| | | | | | | | - Freddy Moreno
- Department of Basic Sciences of Health, Faculty of Health Sciences, Pontificia Universidad del Valle, Cali, Colombia
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Possible Association Between Dental Sealants and Urinary Bisphenol A Levels in Children Warrants Additional Biomonitoring and Safety Research. J Evid Based Dent Pract 2014; 14:200-2. [DOI: 10.1016/j.jebdp.2014.10.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Braun JM, Lanphear BP, Calafat AM, Deria S, Khoury J, Howe CJ, Venners SA. Early-life bisphenol a exposure and child body mass index: a prospective cohort study. ENVIRONMENTAL HEALTH PERSPECTIVES 2014; 122:1239-45. [PMID: 25073184 PMCID: PMC4216170 DOI: 10.1289/ehp.1408258] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 07/25/2014] [Indexed: 05/17/2023]
Abstract
BACKGROUND Early-life exposure to bisphenol A (BPA) may increase childhood obesity risk, but few prospective epidemiological studies have investigated this relationship. OBJECTIVE We sought to determine whether early-life exposure to BPA was associated with increased body mass index (BMI) at 2-5 years of age in 297 mother-child pairs from Cincinnati, Ohio (HOME Study). METHODS Urinary BPA concentrations were measured in samples collected from pregnant women during the second and third trimesters and their children at 1 and 2 years of age. BMI z-scores were calculated from weight/height measures conducted annually from 2 through 5 years of age. We used linear mixed models to estimate BMI differences or trajectories with increasing creatinine-normalized BPA concentrations. RESULTS After confounder adjustment, each 10-fold increase in prenatal (β = -0.1; 95% CI: -0.5, 0.3) or early-childhood (β = -0.2; 95% CI: -0.6, 0.1) BPA concentrations was associated with a modest and nonsignificant reduction in child BMI. These inverse associations were suggestively stronger in girls than in boys [prenatal effect measure modification (EMM) p-value = 0.30, early-childhood EMM p-value = 0.05], but sex-specific associations were imprecise. Children in the highest early-childhood BPA tercile had lower BMI at 2 years (difference = -0.3; 95% CI: -0.6, 0.0) and larger increases in their BMI slope from 2 through 5 years (BMI increase per year = 0.12; 95% CI: 0.07, 0.18) than children in the lowest tercile (BMI increase per year = 0.07; 95% CI: 0.01, 0.13). All associations were attenuated without creatinine normalization. CONCLUSIONS Prenatal and early-childhood BPA exposures were not associated with increased BMI at 2-5 years of age, but higher early-childhood BPA exposures were associated with accelerated growth during this period.
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Affiliation(s)
- Joseph M Braun
- Department of Epidemiology, Brown University School of Public Health, Brown University, Providence, Rhode Island, USA
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McKinney C, Rue T, Sathyanarayana S, Martin M, Seminario AL, DeRouen T. Dental sealants and restorations and urinary bisphenol A concentrations in children in the 2003-2004 National Health and Nutrition Examination Survey. J Am Dent Assoc 2014; 145:745-50. [PMID: 24982281 PMCID: PMC4667745 DOI: 10.14219/jada.2014.34] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Resin-based dental sealants and composites contain bisphenol A-glycidyl methacrylate, a bisphenol A (BPA) derivative. The authors hypothesized that a greater number of sealants or restorations would be associated with higher urinary BPA concentrations. METHODS The authors examined urinary BPA measurements (in nanograms per milliliter) and oral examination data for 1,001 children aged 6 to 19 years from data sets of the 2003-2004 National Health and Nutrition Examination Survey (NHANES). They categorized children according to number of occlusal sealants and number of restorations, with four categories in each of the two groups. They estimated associations by using unadjusted and adjusted tobit regression models. RESULTS The lowest quartile of BPA concentrations ranged from 0.3 ng/mL to 1.9 ng/mL, whereas the highest quartile ranged from 7.3 ng/mL to 149 ng/mL. In adjusted analysis, children with seven to 16 sealants had geometric mean BPA concentrations 25 percent higher than those of children with no sealants (95 percent confidence interval [CI], -14 percent to 82 percent; P = .23). In adjusted analysis, children with seven to 42 restorations had geometric mean BPA concentrations 20 percent higher than those of children with no restorations (95 percent CI, -6 percent to 53 percent; P = .13). Neither of these adjusted estimates was statistically significant. CONCLUSIONS Though the findings were in the direction hypothesized, the authors did not observe a statistically significant association between a greater number of sealants or restorations and higher urinary BPA concentrations. Additional studies are needed to determine the extent of oral and systemic exposure to BPA from resin-based dental restorative materials over time. PRACTICAL IMPLICATIONS Dentists should follow this issue carefully as it develops and as the body of evidence grows. There is insufficient evidence to change practice at this time.
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Affiliation(s)
- Christy McKinney
- Dr. McKinney is an acting assistant professor, Department of Oral Health Sciences, University of Washington, Box 357475, Seattle, Wash. 98195, e-mail . Address correspondence to Dr. McKinney
| | - Tessa Rue
- Ms. Rue is a biostatistician, Department of Biostatistics, University of Washington, Seattle
| | - Sheela Sathyanarayana
- Dr. Sathyanarayana is an assistant professor, Department of Pediatrics, University of Washington, Seattle
| | - Michael Martin
- Dr. Martin is a professor, Department of Oral Medicine, University of Washington, Seattle
| | - Ana Lucia Seminario
- Dr. Seminario is an assistant professor, Department of Pediatric Dentistry, University of Washington, Seattle
| | - Timothy DeRouen
- Dr. DeRouen is a professor emeritus, Department of Oral Health Sciences and the Center for Global Oral Health, School of Dentistry, and the Department of Biostatistics, School of Public Health, University of Washington, Seattle
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Maserejian NN, Shrader P, Brown OA, Trachtenberg FL, Soncini J, Hauser R, Shenker BJ. Dental sealants and composite restorations and longitudinal changes in immune function markers in children. Int J Paediatr Dent 2014; 24:215-25. [PMID: 24033362 PMCID: PMC4593059 DOI: 10.1111/ipd.12064] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Resins used in dental composites, derived from bisphenol-A (BPA), have been shown to alter immune cells. The objective of this study was to explore children's immune function changes in relation to resin composite treatment. DESIGN We conducted secondary data analysis of the New England Children's Amalgam Trial immune function substudy (N = 59). Immune function was measured pre-treatment and up to five times post-treatment through 5-year follow-up. Multivariable generalized linear regression models were used to estimate the association between three classes of resin composites (bisphenol-A-diglycidyl-dimethacrylate [BisGMA]-based flowables used for preventive sealants; urethane dimethacrylate [UDMA]-based compomer restorations; bisGMA-based restorations) and changes in immune function markers measured annually. RESULTS Total white blood cell counts and responsiveness of T cells or neutrophils were not appreciably altered by composite treatment levels. Changes in B cell responsiveness were greater throughout follow-up among children with more bisGMA-based composite restorations, which opposed findings for amalgam treatment levels. Monocyte responsiveness changes were decreased at 6 months with greater treatment, but not over longer follow-up. CONCLUSIONS Results of this analysis showed no overt immune function alterations associated with resin composites. Additional research regarding lymphocyte activation may be warranted given the consistency of results within these analyses and with a prior study showing increased B cell activation.
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Affiliation(s)
- NN Maserejian
- Department of Epidemiology, New England Research Institutes, Watertown, MA, USA
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Rasines Alcaraz MG, Veitz-Keenan A, Sahrmann P, Schmidlin PR, Davis D, Iheozor-Ejiofor Z. Direct composite resin fillings versus amalgam fillings for permanent or adult posterior teeth. Cochrane Database Syst Rev 2014:CD005620. [PMID: 24683067 DOI: 10.1002/14651858.cd005620.pub2] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
BACKGROUND Amalgam has been the traditional material for filling cavities in posterior teeth for the last 150 years and, due to its effectiveness and cost, amalgam is still the restorative material of choice in certain parts of the world. In recent times, however, there have been concerns over the use of amalgam restorations (fillings), relating to the mercury release in the body and the environmental impact following its disposal. Resin composites have become an esthetic alternative to amalgam restorations and there has been a remarkable improvement of its mechanical properties to restore posterior teeth.There is need to review new evidence comparing the effectiveness of both restorations. OBJECTIVES To examine the effects of direct composite resin fillings versus amalgam fillings for permanent posterior teeth, primarily on restoration failure. SEARCH METHODS We searched the Cochrane Oral Health Group's Trials Register (to 22 October 2013), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2013, Issue 9), MEDLINE via OVID (1946 to 22 October 2013), EMBASE via OVID (1980 to 22 October 2013), and LILACs via BIREME Virtual Health Library (1980 to 22 October 2013). We applied no restrictions on language or date of publication when searching the electronic databases. We contacted manufacturers of dental materials to obtain any unpublished studies. SELECTION CRITERIA Randomized controlled trials comparing dental resin composites with dental amalgams in permanent posterior teeth. We excluded studies having a follow-up period of less than three years. DATA COLLECTION AND ANALYSIS We used standard methodological procedures expected by The Cochrane Collaboration. MAIN RESULTS Of the 2205 retrieved references, we included seven trials (10 articles) in the systematic review. Two trials were parallel group studies involving 1645 composite restorations and 1365 amalgam restorations (921 children) in the analysis. The other five trials were split-mouth studies involving 1620 composite restorations and 570 amalgam restorations in an unclear number of children. Due to major problems with the reporting of the data for the five split-mouth trials, the primary analysis is based on the two parallel group trials. We judged all seven trials to be at high risk of bias and we analyzed 3265 composite restorations and 1935 amalgam restorations.The parallel group trials indicated that resin restorations had a significantly higher risk of failure than amalgam restorations (risk ratio (RR) 1.89, 95% confidence interval (CI) 1.52 to 2.35, P value < 0.001 (fixed-effect model) (low-quality evidence)) and increased risk of secondary caries (RR 2.14, 95% CI 1.67 to 2.74, P value < 0.001 (low-quality evidence)) but no evidence of an increased risk of restoration fracture (RR 0.87, 95% CI 0.46 to 1.64, P value = 0.66 (moderate-quality evidence)). The results from the split-mouth trials were consistent with those of the parallel group trials.Adverse effects of dental restorations were reported in two trials. The outcomes considered were neurobehavioral function, renal function, psychosocial function, and physical development. The investigators found no difference in adverse effects between composite and amalgam restorations. However, the results should be interpreted with caution as none of the outcomes were reported in more than one trial. AUTHORS' CONCLUSIONS There is low-quality evidence to suggest that resin composites lead to higher failure rates and risk of secondary caries than amalgam restorations. This review reinforces the benefit of amalgam restorations and the results are particularly useful in parts of the world where amalgam is still the material of choice to restore posterior teeth with proximal caries. Though the review found insufficient evidence to support or refute any adverse effects amalgam may have on patients, new research is unlikely to change opinion on its safety and due to the decision for a global phase-down of amalgam (Minamata Convention on Mercury) general opinion on its safety is unlikely to change.
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Maserejian NN, Shrader P, Trachtenberg FL, Hauser R, Bellinger DC, Tavares M. Dental sealants and flowable composite restorations and psychosocial, neuropsychological, and physical development in children. Pediatr Dent 2014; 36:68-75. [PMID: 24717713 PMCID: PMC4854637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE Dental sealant materials may intraorally release their components, including bisphenol-A (BPA), but long-term health effects are uncertain. The New England Children's Amalgam Trial (NECAT) found that composite restorations were associated with psychosocial, but not neuropsychological or physical, outcomes. The previous analysis did not consider sealants and preventive resin restorations (PRRs), which were routinely placed. The purpose of this analysis was to examine sealant/PRR exposure in association with psychosocial and other health outcomes. METHODS NECAT recruited 534 six- to 10-year-olds and provided dental care during a five-year follow-up. Annually, examiners conducted psychosocial and neuropsychological tests and measured body mass index (BMI) and fat percentage (BF%). Associations between surface years (SY) of sealants/PRRs and outcomes were tested using multivariable models. RESULTS Cumulative exposure level to sealants and/or PRRs was not associated with psychosocial assessments (eg, total problems: Child Behavior Checklist, 10-SY β=-0.2 ± 0.3, P=.60) or neuropsychological tests (eg, full-scale IQ, 10-SY β=0.1 ± 0.2, P=.60). There were no associations for changes in BMI-for-age z-score (P=.40), BF% (girls 10-SY β=-0.2 ± 0.3; boys 10-SY β=-0.1 ± 0.3), or menarche (10-SY hazard ratio=0.91, 95% confidence interval=0.83-1.01, P=.08). CONCLUSIONS This study showed no associations between exposure level of dental sealants or PRRs and behavioral, neuropsychological, or physical development in children over 5-years.
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Affiliation(s)
- Nancy N. Maserejian
- Dept. of Epidemiology, New England Research Institutes, Watertown, MA
- Dept. of Oral Health Policy and Epidemiology, Harvard School of Dental Medicine, Boston, MA
| | - Peter Shrader
- Dept. of Epidemiology, New England Research Institutes, Watertown, MA
| | | | - Russ Hauser
- Harvard School of Public Health, Boston, MA
- Vincent Obstetrics and Gynecology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - David C. Bellinger
- Harvard School of Public Health, Boston, MA
- Department of Neurology, Boston Children’s Hospital, Boston MA
- Harvard Medical School, 25 Shattuck St., Boston, MA
| | - Mary Tavares
- Dept. of Oral Health Policy and Epidemiology, Harvard School of Dental Medicine, Boston, MA
- The Forsyth Institute, Cambridge, MA
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Donovan TE, Anderson M, Becker W, Cagna DR, Carr GB, Albouy JP, Metz J, Eichmiller F, McKee JR. Annual Review of selected dental literature: Report of the Committee on Scientific Investigation of the American Academy of Restorative Dentistry. J Prosthet Dent 2013; 110:161-210. [DOI: 10.1016/s0022-3913(13)60358-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Rochester JR. Bisphenol A and human health: a review of the literature. Reprod Toxicol 2013; 42:132-55. [PMID: 23994667 DOI: 10.1016/j.reprotox.2013.08.008] [Citation(s) in RCA: 1166] [Impact Index Per Article: 106.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 06/13/2013] [Accepted: 08/21/2013] [Indexed: 01/16/2023]
Abstract
There is growing evidence that bisphenol A (BPA) may adversely affect humans. BPA is an endocrine disruptor that has been shown to be harmful in laboratory animal studies. Until recently, there were relatively few epidemiological studies examining the relationship between BPA and health effects in humans. However, in the last year, the number of these studies has more than doubled. A comprehensive literature search found 91 studies linking BPA to human health; 53 published within the last year. This review outlines this body of literature, showing associations between BPA exposure and adverse perinatal, childhood, and adult health outcomes, including reproductive and developmental effects, metabolic disease, and other health effects. These studies encompass both prenatal and postnatal exposures, and include several study designs and population types. While it is difficult to make causal links with epidemiological studies, the growing human literature correlating environmental BPA exposure to adverse effects in humans, along with laboratory studies in many species including primates, provides increasing support that environmental BPA exposure can be harmful to humans, especially in regards to behavioral and other effects in children.
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Key Words
- 17-beta estradiol
- 8-OHdG
- 8-hydoxydeoxyguanosine
- A European population representative sample (Chianti, Italy)
- AGD
- ANA
- BADGE
- BASC-2
- BMI
- BPA
- BRIEF-P
- Behavior Rating Inventory of Executive Function-Preschool
- Behavioral Assessment System for Children
- Bisphenol A
- C-reactive protein
- CAD
- CBCL
- CHAMACOS
- CHD
- CMV
- CRP
- CVD
- Child Behavior Checklist
- DBP
- DHEAS
- Development
- E2
- ECN
- EFS
- EH
- EPIC-Norfolk Study
- ER
- Endocrine-disrupting chemicals
- Epidemiology
- FAI
- FDA
- FSH
- FT
- Food and Drug Administration
- HDL
- HOMES
- HRV
- HbA1c
- Human
- IL-6
- ISCI
- IVF
- InCHIANTI
- LDL
- LH
- MDA
- MGH
- MaGiCAD
- Massachusetts General Hospital (United States)
- Metabolic disease
- NECAT
- NHANES
- NICU Network Neurobehavioral Scale
- NNNS
- National Health and Nutrition Examination Survey (United States)
- OHAT
- Office of Health Assessment and Translation
- PCOS
- PFOA
- PFOS
- PIVUS
- Reproduction
- SBP
- SCE
- SFF
- SHBG
- SRS
- Social Responsiveness Scale
- T
- T3
- T4
- TDI
- TSH
- The Center for the Health Assessment of Mothers and Children of Salinas, Salina, CA
- The European Prospective Investigation into Cancer and Nutrition Cohort Study, consisting of over 500,000 people (Denmark, France, Germany, Greece, Italy, the Netherlands, Norway, Spain, Sweden and the United Kingdom)
- The Health Outcomes and Measures of the Environment Study (United States)
- The Metabolomics and Genomics in Coronary Artery Disease Study (Denmark, France, Germany, Greece, Italy, the Netherlands, Norway, Spain, Sweden and the United Kingdom)
- The New England Children's Amalgam Trial (United States)
- The Study for Future Families, USA
- The Vasculature in Uppsala Seniors Study (Uppsala, Sweden)
- Thyroid
- UCSF
- USEPA
- United Sates Environmental Protection Agency
- University of California, San Francisco
- VCL
- anogenital distance
- antinuclear antibodies
- bisGMA
- bisphenol A
- bisphenol A diglycidyl ether
- bisphenol A-glycidyl methacrylate
- body mass index
- cardiovascular disease
- coronary artery disease
- coronary heart disease
- curvilinear velocity (μm/s)
- cytomegalovirus
- dehydroepiandrosterone sulfate
- diastolic blood pressure
- embryo cell number
- embryo fragmentation score
- endometrial hyperplasia
- estrogen receptor
- follicle-stimulating hormone
- free androgen index (total T divided by SHBG)
- free testosterone
- hCG
- heart rate variability
- hemoglobin A1c
- high-density lipoprotein
- human chorionic gonadotropin
- in vitro fertilization
- interleukin-6
- intracytoplasmic sperm injection
- low-density lipoprotein
- luteinizing hormone
- malondialdehyde
- perfluorooctane sulfonate
- perfluorooctanoic acid
- polycystic ovary syndrome
- reverse transcription polymerase chain reaction
- rtPCR
- sex hormone binding globulin
- sister chromatid exchange
- systolic blood pressure
- thyroid stimulating hormone
- thyroxine
- tolerable daily intake
- total testosterone
- triidothyronine
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Affiliation(s)
- Johanna R Rochester
- The Endocrine Disruption Exchange (TEDX), P.O. Box 1407, Paonia, CO 81428, United States.
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Composite Restorations May Lead to Increased Concentrations of Salivary and Urinary BPA. J Evid Based Dent Pract 2013; 13:64-6. [DOI: 10.1016/j.jebdp.2013.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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