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Home bleaching

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https://www.readbyqxmd.com/read/28319134/genotype-and-local-environment-dynamically-influence-growth-disturbance-response-and-survivorship-in-the-threatened-coral-acropora-cervicornis
#1
Crawford Drury, Derek Manzello, Diego Lirman
The relationship between the coral genotype and the environment is an important area of research in degraded coral reef ecosystems. We used a reciprocal outplanting experiment with 930 corals representing ten genotypes on each of eight reefs to investigate the influence of genotype and the environment on growth and survivorship in the threatened Caribbean staghorn coral, Acropora cervicornis. Coral genotype and site were strong drivers of coral growth and individual genotypes exhibited flexible, non-conserved reaction norms, complemented by ten-fold differences in growth between specific G-E combinations...
2017: PloS One
https://www.readbyqxmd.com/read/28210444/effect-of-two-different-tooth-bleaching-techniques-on-microhardness-of-giomer
#2
Soodabeh Kimyai, Mahmoud Bahari, Fereshteh Naser-Alavi, Soodabeh Behboodi
BACKGROUND: Tooth bleaching is a safe and conservative treatment modality to improve the esthetic appearance of discolored teeth. One of the problems with the use of bleaching agents is their possible effect on surface microhardness of resin-based materials. The present study was carried out to evaluate the effect of in-office and at-home bleaching on surface microhardness of giomer. MATERIAL AND METHODS: Seventy-five disk-shaped giomer samples (Beautifil II) were prepared and cured with a light-curing unit...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28157418/whitening-efficacy-of-whitening-mouth-rinses-used-alone-or-in-conjunction-with-carbamide-peroxide-home-whitening
#3
Jbs Oliveira, R S Sarlo, E Bresciani, Tmf Caneppele
OBJECTIVES: The aim of this study was to compare the effectiveness of whitening mouth rinses on teeth previously whitened or not, exposed to food dyes. METHODS AND MATERIALS: One hundred twenty enamel-dentin specimens, 3 mm in diameter, were obtained from bovine incisors. The specimens were stained for 14 days in staining broth. After staining, the initial color reading was performed via a spectrophotometer CM-2600d (Konica Minolta). Half of specimens were submitted to whitening (10% carbamide peroxide [CP]) for 14 days...
February 3, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28149472/effect-of-tooth-bleaching-on-the-carbonate-concentration-in-dental-enamel-by-raman-spectroscopy
#4
Tatiana Vargas-Koudriavtsev, Óscar-Andrey Herrera-Sancho
BACKGROUND: There are not many studies evaluating the effects of surface treatments at the molecular level. The aim of this in vitro study was to analyze the concentration of carbonate molecules in dental enamel by Raman spectroscopy after the application of in-office and home whitening agents. MATERIAL AND METHODS: Sixty human teeth were randomly divided into six groups and exposed to three different home bleaching gels (Day White) and three in-office whitening agents (Zoom! Whitespeed and PolaOffice) according to the manufacturer´s instructions...
January 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28117858/tooth-bleaching-effects-%C3%A2-on-the-adhesive-interface-%C3%A2-of-composite-restorations
#5
Lorena Silva, Geraldo Thedei, Maria Angélica Menezes-Oliveira, Ruchele D Nogueira, Vinicius Geraldo-Martins
The objective of this study was to evaluate the effects of different bleaching techniques on the tooth-restoration interface of composite restorations. Cavities (3 x 3 x 2 mm) were prepared in 100 bovine incisor fragments, which were etched with a conventional adhesive system and restored with a nanocomposite. The fragments were randomly divided into five groups (n = 20): Control (no bleaching), At-home bleaching (HB) (10% hydrogen peroxide [HP]), In-office bleaching (OB) (35% HP), LED-activated bleaching (LB) (35% HP activated by LED), and Laser-activated bleaching (LaB) (35% HP activated by diode laser, λ = 880 nm)...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/27997982/influence-of-tooth-bleaching-on-dental-enamel-microhardness-a-systematic-review-and-meta-analysis
#6
REVIEW
Jaine Zanolla, Amanda Brites da Costa Marques, Deisi Carneiro da Costa, Albert Schiaveto de Souza, Margareth Coutinho
BACKGROUND: Several studies have investigated the effect of bleaching on dental tissues. The evaluation of the effect of home bleaching with 10% carbamide peroxide is important for assessing alterations in enamel microhardness that may affect dental health in terms of resistance to masticatory forces. This meta-analysis was performed in order to determine scientific evidence regarding the effects of home vital bleaching with 10% carbamide peroxide gel on the microhardness of human dental enamel...
December 20, 2016: Australian Dental Journal
https://www.readbyqxmd.com/read/27935196/an-in-vitro-evaluation-of-human-enamel-surfaces-subjected-to-erosive-challenge-after-bleaching
#7
Maria de Fátima Carvalho Vasconcelos, Andréa Fonseca-Gonçalves, Adílis Kalina Alexandria de França, Urubatan Vieira de Medeiros, Lucianne Cople Maia, Celso Silva Queiroz
OBJECTIVES: This study aimed to evaluate whether tooth enamel bleached with hydrogen peroxide (H2 O2 ) is more susceptible to erosion when compared with unbleached tooth enamel; and whether the presence of calcium (Ca) in the bleaching gel influenced this process. MATERIALS AND METHODS: Enamel blocks were prepared from human molars, and submitted to surface microhardness analysis (baseline). Blocks were prepared and randomly divided into four treatment groups (n = 20): G1 and G2-bleached with 7...
December 9, 2016: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/27890563/exposure-factors-for-cleaning-automotive-care-and-surface-protection-products-for-exposure-assessments
#8
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...
January 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27855892/cooked-garlic-and-antioxidant-activity-correlation-with-organosulfur-compound-composition
#9
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...
April 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27812622/inflammatory-response-of-human-dental-pulp-to-at-home-and-in-office-tooth-bleaching
#10
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
#11
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...
January 2017: Operative Dentistry
https://www.readbyqxmd.com/read/27708725/influence-of-enamel-thickness-on-bleaching-efficacy-an-in-depth-color-analysis
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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