Sodium Perborate
Mostrando 1-12 de 14 artigos, teses e dissertações.
-
1. Soft denture liners and sodium perborate: sorption, solubility and color change
Abstract Aim: To evaluate the sorption, solubility and color change in two lining materials after 120 days of immersion in either sodium perborate or artificial saliva. Methods: Thirty disk-shaped specimens (15×3 mm) of each material, Mucopren(r) soft (MS) and Elite(r) soft (ES) were manufactured and divided into two groups. The specimens in the control g
Braz. J. Oral Sci.. Publicado em: 2015-09
-
2. Effect of cleanser solutions on the color of acrylic resins associated with titanium and nickel-chromium alloys
This study evaluated the effect of cleanser solutions on the color of heat-polymerized acrylic resin (HPAR) and on the brightness of dental alloys with 180 immersion trials. Disk-shaped specimens were made with I) commercially pure titanium, II) nickel-chromium-molybdenum-titanium, III) nickel-chromium molybdenum, and IV) nickel-chromium-molybdenum beryllium
Braz. oral res.. Publicado em: 11/06/2014
-
3. Screening and characterization of a novel alkaline lipase from Acinetobacter calcoaceticus 1-7 isolated from Bohai Bay in China for detergent formulation
A novel alkaline lipase-producing strain 1-7 identified as Acinetobacter calcoaceticus was isolated from soil samples collected from Bohai Bay, China, using an olive oil alkaline plate, which contained olive oil as the sole carbon source. The lipase from strain 1-7 showed the maximum activity at pH 9.0 under 40ºC. One interesting feature of this enzyme is t
Brazilian Journal of Microbiology. Publicado em: 2012-03
-
4. Changes in roughness of denture base and reline materials by chemical disinfection or microwave irradiation: Surface roughness of denture base and reline materials
OBJECTIVE: The effect of disinfection by immersion in sodium perborate solution and microwave irradiation on surface roughness of one denture base resin (Lucitone 550 -L), 3 hard chairside reline resins (Tokuyama Rebase II-TR, New Truliner-NT, Ufi Gel hard-UH) and 3 resilient reline materials (Trusoft-T; Sofreliner-S, Dentusil-D) was evaluated. MATERIAL AND
Journal of Applied Oral Science. Publicado em: 2011-10
-
5. Evaluation of alternative methods for the disinfection of toothbrushes
The aim of this study was to evaluate alternative methods for the disinfection of toothbrushes considering that most of the previously proposed methods are expensive and cannot be easily implemented. Two-hundred toothbrushes with standardized dimensions and bristles were included in the study. The toothbrushes were divided into 20 experimental groups (n = 10
Brazilian Oral Research. Publicado em: 2010-03
-
6. Effectiveness of carbamide peroxide and sodium perborate in non-vital discolored teeth
OBJECTIVE: To evaluate the efficacy of 16% carbamide peroxide gel (CP16%), tetrahydrate sodium perborate (SP) and mixture (CP16% + SP), in walking bleaching of non-vital discolored teeth. MATERIALS AND METHODS: Sixty single-rooted human premolars with intact crowns were used and initial color was assessed using Vita shade guide and standardized photos. The t
Journal of Applied Oral Science. Publicado em: 2009-06
-
7. Determination of internal bovine dental bleaching with different bleaching agents / Determinação do grau de clareamento interno de dentes bovinos submetidos a diferentes agentes clareadores.
The purpose of this study was to evaluate the bleaching effect of 37% carbamide peroxide, sodium perborate mixed with distilled water and sodium perborate mixed with 35 hydrogen peroxide on artificially stained pulpless teeth. Eighteen bovine teeth were sectioned 3mm apical of the cement-enamel junction and were divided into eight groups. Four groups was dir
Publicado em: 2008
-
8. In vitro assessment of intracoronal bleaching using 2% chlorhexidine gel associated to different bleaching agents / Estudo "in vitro" da associação da clorexidina gel 2% a agentes clareadores utilizados durante o clareamento dental interno
Non-vital tooth bleaching is a conservative esthetic treatment for endodontically treated discolored teeth. It is effective and relatively inexpensive. The purpose of this study was to evaluate ?in vitro? the association of sodium perborate + 2% chlorhexidine gel comparing with sodium perborate + distilled water; sodium perborate + 30%hydrogen peroxide (H2O2
Publicado em: 2007
-
9. Influence of different formulations of bleaching agents on enamel and dentin physical and chemical properties / Influencia de diferentes formulações de agentes clareadores nas propriedades fisicas e quimicas do esmalte e dentina
Section A: Effects of bleaching agents on dental enamel Since the introduction of the nightguard vital bleaching technique using 10% carbamide peroxide (10% CP), reports have evaluated the effects of bleaching agents on human enamel. Evidences show that CP is able to alter the composition and morphology of enamel substrate. In order to reduce the adverse eff
Publicado em: 2007
-
10. Solid state oxidation of phenols to quinones with sodium perborate on wet montmorillonite K10
Fenóis foram oxidados a quinonas usando perborato de sódio (SPB) em montmorilonita úmida, como oxidante. A reação foi conduzida em fase sólida, a temperatura ambiente e sem a utilização de solventes.
Journal of the Brazilian Chemical Society. Publicado em: 2005-10
-
11. Efeito de agentes clareadores internos nos procedimentos restauradores adesivos em diferentes intervalos de tempo apos o clareamento
Discoloration of a pulpless tooth is an esthetic problem which requires treatment. The nonvital bleaching is considered a conservative, safe and low cost alternative to reestablish the original tooth color compared to invasive treatments. The use of bleaching agents could influence the restorative bonding procedures. However, the role of the elapsed time fol
Publicado em: 2002
-
12. Oxidative Activation of Bacillus cereus Spores
A study was made of the activation of Bacillus cereus strain T spores by using the oxidizing agent sodium perborate. The degree of activation was measured with constant germination conditions by using L-alanine, inosine, adenosine, and L-alanine plus adenosine as germination stimulants. The germinal response following the various treatments was compared with