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https://www.readbyqxmd.com/read/27890563/exposure-factors-for-cleaning-automotive-care-and-surface-protection-products-for-exposure-assessments
#1
Ji Young Park, Miyoung Lim, Wonho Yang, Kiyoung Lee
Accurately measuring the usage patterns of consumer products (CPs) is important to conduct realistic exposure assessments. We determined the exposure factors for 18 consumer products: household bleach, mold stain remover, all-purpose cleaner, washing machine cleaner, air conditioner cleaner, glass cleaner, drain cleaner, adhesive remover, liquid snow chain, tire shine spray, wheel cleaner, rain repellent, car wax spray, leather polish, furniture polish, anti-fog product, fabric waterproofing spray, and rust inhibitor...
November 24, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27855892/cooked-garlic-and-antioxidant-activity-correlation-with-organosulfur-compound-composition
#2
D A Locatelli, M A Nazareno, C M Fusari, A B Camargo
The antioxidant properties and the main beneficial organosulphur compounds of home-cooked garlic samples were studied in order to establish relationships between them. Antioxidant activity was tested by free radical scavenging against 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) and 2,2'-azino-bis-(3-ethylbenzo-thiazoline-6-sulfonic acid) diammonium salt (ABTS(+)), Fe(III) reducing ability (FRAP) and linoleic acid co-oxidation initiated by soybean lipoxygenase in a micelle system. DPPH, ABTS and FRAP assays showed the highest activity for raw garlic samples, while β-carotene bleaching assay yielded the highest activity for stir-fried garlic...
January 0: Food Chemistry
https://www.readbyqxmd.com/read/27812622/inflammatory-response-of-human-dental-pulp-to-at-home-and-in-office-tooth-bleaching
#3
Maysa Magalhães Vaz, Lawrence Gonzaga Lopes, Paula Carvalho Cardoso, João Batista de Souza, Aline Carvalho Batista, Nádia Lago Costa, Érica Miranda Torres, Carlos Estrela
Objective: This study evaluated the inflammatory responses of human dental pulp after the use of two bleaching techniques. Material and Methods: Pulp samples were collected from human third molars extracted for orthodontic reasons and divided into three groups: control - no tooth bleaching (CG) (n=7); at-home bleaching with 15% carbamide peroxide (AH) (n = 10), and in-office bleaching with 38% hydrogen peroxide (IO) (n=12). Pulps were removed and stained with hematoxylin-eosin for microscopic analysis of inflammation intensity, collagen degradation, and pulp tissue organization...
September 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/27723425/efficacy-of-home-use-bleaching-agents-delivered-in-customized-or-prefilled-disposable-trays-a-randomized-clinical-trial
#4
N R Carlos, E C Bridi, Flb Amaral, Fmg França, C P Turssi, R T Basting
The purpose of this study was to evaluate bleaching methods containing hydrogen peroxide (HP) or carbamide peroxide (CP), dispensed in customized or prefilled trays, in terms of color change, tooth sensitivity, gingival irritation, acceptance, and comfort. Seventy-five volunteers were randomly selected and distributed according to the whitening agent (n=25): 10% HP dispensed in prefilled trays (Opalescence Go 10%) and 9.5% HP (Pola Day) and 10% CP both delivered in customized trays (Opalescence PF 10%). HP was applied for 30 min/d for 14 days (d), and CP for 8 h/d for 14 days...
October 10, 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27708725/influence-of-enamel-thickness-on-bleaching-efficacy-an-in-depth-color-analysis
#5
Juliana do Carmo Públio, Maria Beatriz Freitas D'Arce, Anderson Catelan, Gláucia Maria Bovi Ambrosano, Flávio Henrique Baggio Aguiar, José Roberto Lovadino, Débora Alves Nunes Leite Lima
This study evaluated the influence of different enamel thicknesses and bleaching agents on treatment efficacy in-depth by spectrophotometry color analysis. Eighty bovine dental fragments were previously stained in black tea solution and randomly assigned into eight groups (n=10), 1.75mm dentin thickness and different enamel thicknesses as follows: 0.5mm, 1.0mm planned, 1.0mm unplanned (aprismatic enamel), and absence of enamel. The 10% carbamide peroxide (CP) and 35% hydrogen peroxide (HP) bleaching gels were applied on the enamel surface following the manufacturer's recommendations...
2016: Open Dentistry Journal
https://www.readbyqxmd.com/read/27672493/microbial-diversity-of-extreme-habitats-in-human-homes
#6
Amy M Savage, Justin Hills, Katherine Driscoll, Daniel J Fergus, Amy M Grunden, Robert R Dunn
High-throughput sequencing techniques have opened up the world of microbial diversity to scientists, and a flurry of studies in the most remote and extreme habitats on earth have begun to elucidate the key roles of microbes in ecosystems with extreme conditions. These same environmental extremes can also be found closer to humans, even in our homes. Here, we used high-throughput sequencing techniques to assess bacterial and archaeal diversity in the extreme environments inside human homes (e.g., dishwashers, hot water heaters, washing machine bleach reservoirs, etc...
2016: PeerJ
https://www.readbyqxmd.com/read/27649457/an-in-situ-study-of-the-influence-of-staining-beverages-on-color-alteration-of-bleached-teeth
#7
A L Briso, T C Fagundes, M O Gallinari, J Moreira, Lcag de Almeida, V Rahal, R S Gonçalves, Ph Dos Santos
The aim of this study was to evaluate overall color change in bovine tooth fragments submitted to dental bleaching treatment performed simultaneously with the ingestion of beverages containing dyes. For this purpose, tooth fragments assembled into intraoral devices were submitted to at-home dental bleaching using 10% carbamide peroxide (CP) for 14 days and to immersion in staining beverages for 10 minutes daily. The specimens were divided into the following study groups according to bleaching treatment and staining substance (n=12): G I (negative control): no bleaching + distilled water; G II (positive control): bleaching + distilled water; G III: bleaching + coffee; and G IV: bleaching + grape juice...
November 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27508165/application-of-quantitative-light-induced-fluorescence-to-determine-the-depth-of-demineralization-of-dental-fluorosis-in-enamel-microabrasion-a-case-report
#8
Tae-Young Park, Han-Sol Choi, Hee-Won Ku, Hyun-Su Kim, Yoo-Jin Lee, Jeong-Bum Min
Enamel microabrasion has become accepted as a conservative, nonrestorative method of removing intrinsic and superficial dysmineralization defects from dental fluorosis, restoring esthetics with minimal loss of enamel. However, it can be difficult to determine if restoration is necessary in dental fluorosis, because the lesion depth is often not easily recognized. This case report presents a method for analysis of enamel hypoplasia that uses quantitative light-induced fluorescence (QLF) followed by a combination of enamel microabrasion with carbamide peroxide home bleaching...
August 2016: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/27492540/women-using-bleach-for-home-cleaning-are-at-increased-risk-of-non-allergic-asthma
#9
Bobette Matulonga, Marta Rava, Valérie Siroux, Alfred Bernard, Orianne Dumas, Isabelle Pin, Jan-Paul Zock, Rachel Nadif, Bénédicte Leynaert, Nicole Le Moual
BACKGROUND: Bleach is widely used for household cleaning. Although it is recognized that occupational use of bleach may have adverse respiratory health effects, it is unknown whether common domestic use of bleach may be a risk factor for asthma. AIM: To assess whether the domestic use of bleach for home cleaning is associated with asthma and other respiratory outcomes. METHODS: Questionnaire-based information on respiratory symptoms and cleaning habits and data from skin prick-tests, bronchial responsiveness challenge and white blood cells were analyzed in 607 women participating in the follow-up of the Epidemiological Study on the Genetics and Environment of Asthma (EGEA)...
August 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27389593/impact-of-bleaching-agents-on-water-sorption-and-solubility-of-resin-luting-cements
#10
Mahshid Torabi Ardakani, Berivan Atashkar, Rafat Bagheri, Michael F Burrow
AIM: The aim of the present study was to evaluate the effect of distilled water and home and office bleaching agents on the sorption and solubility of resin luting cements. METHODS: A total of 18 disc-shaped specimens were prepared from each of four resin cements: G-CEM LinkAce, Panavia F, Rely X Unicem, and seT. Specimens were cured according to the manufacturers' instructions and randomly divided into three groups of six, where they were treated with either an office or home bleaching agent or immersed in distilled water (control)...
July 8, 2016: Journal of Investigative and Clinical Dentistry
https://www.readbyqxmd.com/read/27385998/effect-of-co2-nd-yag-and-er-yag-lasers-on-microtensile-bond-strength-of-composite-to-bleached-enamel
#11
Mahshid Mohammadi Basir, Mohammad Bagher Rezvani, Nasim Chiniforush, Zohreh Moradi
BACKGROUND: Tooth restoration immediately after bleaching is challenging due to the potential problems in achieving adequate bond strength. OBJECTIVE: The aim of this study was to evaluate the effect of surface treatment with ER:YAG, ND:YAG, CO2 lasers and 10% sodium ascorbate solution on immediate microtensile bond strength of composite resin to recently bleached enamel. MATERIALS & METHODS: Ninety sound molar teeth were randomly divided into three main groups (n:30) : NB (without bleaching), HB (bleached with 38% carbamide peroxide) and OB (bleached with Heydent bleaching gel assisted by diode laser)...
2016: Open Dentistry Journal
https://www.readbyqxmd.com/read/27290611/comparison-of-efficacy-of-tray-delivered-carbamide-and-hydrogen-peroxide-for-at-home-bleaching-a-systematic-review-and-meta-analysis
#12
REVIEW
Issis Luque-Martinez, Alessandra Reis, Marcos Schroeder, Miguel Angel Muñoz, Alessandro D Loguercio, Danielle Masterson, Lucianne C Maia
OBJECTIVES: The aim of the study was to compare the color change produced by tray-delivered carbamide peroxide [CP] versus hydrogen peroxide products [HP] for at-home bleaching through a systematic review and meta-analysis. MATERIALS AND METHODS: MEDLINE via PubMeb, Scopus, Web of Science, Latin American and Caribbean Health Sciences Literature database (LILACS), Brazilian Library in Dentistry (BBO), and Cochrane Library and Grey literature were searched without restrictions...
September 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27123021/in-vitro-effect-of-casein-phosphopeptide-amorphous-calcium-phosphate-on-enamel-susceptibility-to-staining-by-tea-during-bleaching-treatment
#13
Homayoom Alaghemand, Sedighe Sadat Hashemi Kamangar, Nafiseh Zarenegad, Negin Tabari, Hoorieh Abedi, Soraya Khafri
OBJECTIVES: Bleached enamel is more susceptible to staining, and application of remineralizing agents may decrease enamel susceptibility to staining. This study sought to assess the effect of casein phosphopeptide amorphous calcium phosphate (CPP-ACP) on enamel susceptibility to staining during bleaching treatment. MATERIALS AND METHODS: Forty central and lateral incisors and first premolar teeth were evaluated in four groups of 10. Group one specimens were subjected to in-office bleaching...
August 2015: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/27099423/effect-of-different-bleaching-regimens-on-the-flexural-strength-of-hybrid-composite-resin
#14
Atiyeh Feiz, Noushmehr Samanian, Amin Davoudi, Hamid Badrian
BACKGROUND: The entire effects of different bleaching regimens on the mechanical properties of composite resins have remained unknown. The purpose of this study was to evaluate the effects of different bleaching regimens on the flexural strength (FS) of hybrid composite resins. MATERIALS AND METHODS: In this in vitro study, 80 bar-shaped specimens of hybrid composite resins were fabricated and randomly divided into four groups, 20 specimens in each group. First group (C) was considered as control...
March 2016: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/27091347/does-at-home-bleaching-induce-systemic-oxidative-stress-in-healthy-patients
#15
Majid Akbari, AmirHossein Nejat, Nematollah Farkhondeh, Saeedeh Mehraban Moghadam, Seyed Isaac Hashemy, Hamideh Sadat Mohammadipour
BACKGROUND: At-home bleaching is a technique characterized by the use of carbamide peroxide or hydrogen peroxide as a tooth whitening agent. However, no data exists regarding systemic safety of this technique. The aim of this study was to investigate the effect of at-home bleaching on serum redox homostasis. METHODS: Twenty-nine healthy volunteers who requested for tooth whitening participated in this study. Specified bleaching trays were fabricated for the maxilla and mandible arches...
April 19, 2016: Australian Dental Journal
https://www.readbyqxmd.com/read/27045285/at-home-vs-in-office-bleaching-a-systematic-review-and-meta-analysis
#16
J L de Geus, L M Wambier, S Kossatz, A D Loguercio, A Reis
OBJECTIVE: A systematic review and meta-analysis were performed to evaluate the risk and intensity of tooth sensitivity during in-office and at-home bleaching in adult patients. The efficacy of dental bleaching was also evaluated. METHODS: A comprehensive search was performed in the MEDLINE via PubMed, Scopus, Web of Science, Latin American and Caribbean Health Sciences Literature database, Brazilian Library in Dentistry, Cochrane Library, and System for Information on Grey Literature in Europe without restrictions...
July 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27011745/effect-of-at-home-bleaching-with-different-thickeners-and-aging-on-physical-properties-of-a-nanocomposite
#17
Thayla Hellen Nunes Gouveia, Juliana do Carmo Públio, Glaucia Maria Bovi Ambrosano, Luís Alexandre Maffei Sartini Paulillo, Flávio Henrique Baggio Aguiar, Débora Alves Nunes Leite Lima
OBJECTIVE: To evaluate the influence of 16% carbamide peroxide (CP) containing different thickeners on the physical characteristics of a nanocomposite resin submitted or not to accelerated artificial aging (AAA). MATERIALS AND METHODS: One hundred samples were randomly distributed into two groups (n = 50) according to AAA. Each group was divided into 5 subgroups (n = 10) depending on the bleaching/thickener treatment: CP + carbopol, CP + natrosol, carbopol, natrosol, and no treatment (control)...
January 2016: European Journal of Dentistry
https://www.readbyqxmd.com/read/26981757/does-a-toothpaste-containing-blue-covarine-have-any-effect-on-bleached-teeth-an-in-vitro-randomized-and-blinded-study
#18
Janaina Freitas Bortolatto, Andrea Abi Rached Dantas, Ávery Roncolato, Hugo Merchan, Michael Christopher Floros, Milton Carlos Kuga, Osmir Batista de Oliveira Junior
The objective of this study was to analyze the effect of bleaching toothpastes, both conventional and those containing the new whitening agent Blue Covarine, on teeth previously bleached by conventional techniques (in-office and at-home). Squared bovine enamel/dentin blocks (6.0 x 6.0 x 2.0 mm) were randomly distributed in 6 groups (n = 15), according to the technique used to bleach them (in-office: HP35%; at-home: PC10%) and the type of bleaching toothpaste (none: control; Blue Covarine containing: BC; and without Blue Covarine: NBC)...
2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/26921197/antioxidant-activity-and-peroxidase-inhibition-of-amazonian-plants-extracts-traditionally-used-as-anti-inflammatory
#19
Fabiano S de Vargas, Patricia D O Almeida, Ana Paula A de Boleti, Maria M Pereira, Tatiane P de Souza, Marne C de Vasconcellos, Cecilia Veronica Nunez, Adrian M Pohlit, Emerson S Lima
BACKGROUND: The Amazon is the largest rainforest in the world and is home to a rich biodiversity of medicinal plants. Several of these plants are used by the local population for the treatment of diseases, many of those with probable anti-inflammatory effect. The aim of the present investigation was to evaluate the in vitro antioxidant and anti-peroxidases potential of the ethanol extracts of five plants from the Brazilian Amazon (Byrsonima japurensis, Calycophyllum spruceanum, Maytenus guyanensis, Passiflora nitida and Ptychopetalum olacoides)...
2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/26919081/combined-bleaching-technique-using-low-and-high-hydrogen-peroxide-in-office-bleaching-gel
#20
M Rezende, L Ferri, S Kossatz, A D Loguercio, A Reis
OBJECTIVES: The aim of this study was to evaluate the efficacy, color stability, risk, and intensity of tooth sensitivity (TS) of combined bleaching techniques performed with 20% or 35% hydrogen peroxide for an in-office protocol. METHODS: Thirty patients were randomly divided into two groups and submitted to a single 45-minute in-office bleaching session with 35% hydrogen peroxide or 20% hydrogen peroxide. At-home bleaching was performed with 10% carbamide peroxide for two hours daily over the course of two weeks...
July 2016: Operative Dentistry
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