Demineralization
Mostrando 25-36 de 187 artigos, teses e dissertações.
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25. Influence of biofilm formation on the mechanical properties of enamel after treatment with CPP-ACP crème
Abstract: The study aimed to investigate the effects of bacterial biofilms on changes in the surface microhardness of enamel treated with casein phosphopeptide—amorphous calcium phosphate (CPP-ACP) with and without fluoride. Human enamel blocks with incipient caries-like lesions were divided into four groups of 13: G1: Saliva (Control); G2: fluoride dentif
Braz. oral res.. Publicado em: 27/11/2017
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26. In situ effect of titanium tetrafluoride varnish on enamel demineralization
Abstract The effect of a 4% titanium tetrafluoride (TiF 4 ) varnish on enamel demineralization was evaluated. Twelve volunteers participated in this double-blind, randomized crossover study. Six enamel specimens were positioned in intraoral appliances throughout four treatment stages: 4% TiF 4 varnish (experimental varnish), 5% sodium fluoride (NaF) varnish
Braz. oral res.. Publicado em: 06/11/2017
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27. Trends in restorative composites research: what is in the future?
Abstract Clinical trials have identified secondary caries and bulk fracture as the main causes for composite restoration failure. As a measure to avoid frequent reinterventions for restoration replacement, composites with some sort of defense mechanism against biofilm formation and demineralization, as well as materials with lower susceptibility to crack pro
Braz. oral res.. Publicado em: 28/08/2017
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28. Effect of shrimp shells milling on the molar mass of chitosan
Abstract Shrimp shells are a raw material rich in chitin, a precursor of chitosan biopolymer. The variables of processing (demineralization, deproteination and deacetylation) can be manipulated to determine the main characteristics of chitosan, the degree of deacetylation (DD), and average molar mass. This study evaluated the influence of one of the unit ope
Polímeros. Publicado em: 2017-03
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29. Role of Candida species from HIV infected children in enamel caries lesions: an in vitro study
Abstract Objectives This study analyzed the capacity of Candida spp. from dental biofilm of HIV infected (HIV+) children to demineralize primary molar enamel in vitro by Transversal Microhardness (TMH), Polarized Light Microscopy (PLM) and the quantity of calcium ions (Ca2+) released from the enamel. Material and Methods Candida spp. samples were isolated
J. Appl. Oral Sci.. Publicado em: 2017-02
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30. Correlation between ultrasound velocity and densitometry in fresh and demineralized cortical bone
OBJECTIVE: To compare ultrasound propagation velocity with densitometry in the diaphyseal compact cortical bone of whole sheep metatarsals. METHODS: The transverse ultrasound velocity and bone mineral density of 5-cm-long diaphyseal bone segments were first measured. The bone segments were then divided into four groups of 15 segments each and demineralized
Clinics. Publicado em: 2016-11
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31. Effect of Fluoride Concentration on Reduction of Enamel Demineralization According to the Cariogenic Challenge
Resumo O fluoreto presente em dentifrícios de 1,100 µg/g é considerado efetivo no controle de cárie dental. No entanto, sob alto desafio cariogênico devido ao aumento da exposição ao açúcar, maior concentração de fluoreto (5.000 µg/g) poderia ser necessária para compensar o desequilíbrio no processo de cárie. Isso foi testado em um modelo de c
Braz. Dent. J.. Publicado em: 2016-08
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32. Evaluation of the remineralization capacity of CPP-ACP containing fluoride varnish by different quantitative methods
ABSTRACT Objective The aim of this study was to evaluate the efficacy of CPP-ACP containing fluoride varnish for remineralizing white spot lesions (WSLs) with four different quantitative methods. Material and Methods Four windows (3x3 mm) were created on the enamel surfaces of bovine incisor teeth. A control window was covered with nail varnish, and WSLs
J. Appl. Oral Sci.. Publicado em: 2016-06
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33. Enamel and dentine demineralization by a combination of starch and sucrose in a biofilm – caries model
Abstract Sucrose is the most cariogenic dietary carbohydrate and starch is considered non-cariogenic for enamel and moderately cariogenic for dentine. However, the cariogenicity of the combination of starch and sucrose remains unclear. The aim of this study was to evaluate the effect of this combination on Streptococcus mutans biofilm composition and enamel
Braz. oral res.. Publicado em: 20/05/2016
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34. Effect of green tea as a protective measure against dental erosion in coronary dentine
Abstract The aim of this study was to evaluate the effect of green tea as a protective measure on eroded dentin. Disks of human coronary dentin were selected based on surface hardness and randomly assigned to 3 groups (n = 10): DW - distilled water, CHX - 0.2% chlorhexidine digluconate, and GT - green tea. The disks were allowed to acquire pellicle for 2 hou
Braz. oral res.. Publicado em: 15/12/2015
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35. Effect of 10% fluoride on the remineralization of dentin in situ
ABSTRACT Objective The purpose of this randomized, cross-over, in situ study was to determine the remineralization of demineralized dentin specimens after the application of a 10% fluoride (F-) or a 1% chlorhexidine–1% thymol (CHX–thymol) varnish. Material and Methods Twelve individuals without current caries activity wore removable appliances in the
J. Appl. Oral Sci.. Publicado em: 2015-12
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36. Fluoride varnishes with calcium glycerophosphate: fluoride release and effect on in vitro enamel demineralization
The aims of this study were (1) to assess the amount of fluoride (F) released from varnishes containing calcium glycerophosphate (CaGP) and (2) to assess the effect of the experimental varnishes on in vitro demineralization. Six test groups using 5 varnishes: base varnish (no active ingredients); Duraphat® (2.26% NaF); Duofluorid® (5.63% NaF/CaF2); experim
Braz. oral res.. Publicado em: 10/07/2015