نتایج جستجو برای: calcium fluoride
تعداد نتایج: 186116 فیلتر نتایج به سال:
AIM To assess the influence of low frequency magnetic fields on the contents of calcium, magnesium and fluoride in saliva. SUBJECTS AND METHODS Sixty two patients were subjected to magnetic stimulation with low frequency magnetic fields of mean induction 3 microT at the first intervention and 4 microT at the following fourteen ones. Saliva was sampled before magnetic stimulation and after the...
This study employed an in-air micro-proton-induced X-ray/gamma-ray emission system to assess the effectiveness of fluoride-containing materials (FCMs) incorporating calcium in preventing root caries. Dentin surfaces human third molars were coated with one three FCMs: fluoride-releasing glass-ionomer cement (F7) and experimental which half (P1) or all (P2) strontium F7 was replaced calcium. with...
Dental caries remains a major public health problem, especially for certain high-risk population groups. The goal of this study was to assess the evidence regarding strategies meant to be used as alternatives or booster/supplements to fluoride for caries prevention and management. Articles were selected for inclusion if they had a prospective longitudinal design, with a fluoride control arm, an...
Aims: The first aim of this in vitro study was the comparative assessment of enamel surface morphology and analytical assessment of calcium and fluoride ions after topical application of three sodium fluoride solutions: solutions A and B having the same concentration (0.05% sodium fluoride) and solution C having a higher concentration (0.1% sodium fluoride). The second aim was to assess the rem...
OBJECTIVE To investigate the effect of cerium chloride, cerium chloride/fluoride and fluoride application on calcium release during erosion of treated dentine. METHODS Forty dentine samples were prepared from human premolars and randomly assigned to four groups (1-4). Samples were treated twice a day for 5 days, 30s each, with the following solutions: group 1 placebo, group 2 fluoride (Elmex ...
The present study analyzed the action of sodium trimetaphosphate (TMP) and/or fluoride on hydroxyapatite. Hydroxyapatite powder was suspended in different solutions: deionized water, 500 µg F/mL, 1,100 µg F/mL, 1%TMP, 3%TMP, 500 µg F/mL plus 1%TMP and 500 µg F/mL plus 3%TMP. The pH value of the solutions was reduced to 4.0 and after 30 min, raised to 7.0 (three times). After pH-cycling, the sam...
The well being of human depends on quality of drinking water. Consumption of water containing excess fluoride over a long period of time results in fluorosis. Ramaraju et al., (2000). Investigations of Wood, (1974) showed that, the intake of fluoride is permissible upto 0.5-1.0 mg/L which is beneficial to human health. The maximum allowable concentration for fluoride in drinking water in Indian...
This study evaluated the effect of different types of filler in a resin-based pit and fissure sealant on fluoride release, recharge, and lactic acid neutralization. Resin-based sealant was incorporated with 5% w/w of the following fillers: calcium aluminate cement (CAC), synthesized mesoporous silica (SI), a CAC and SI mixture (CAC+SI), glass-ionomer powder (GIC), and acetic acid-treated GIC (G...
objectives: this study aimed to assess the effect of applying casein phosphopeptide–amorphous calcium phosphate (cpp-acp) paste, casein phosphopeptide–amorphous calcium phosphate fluoride (cpp-acpf) paste and sodium fluoride gel on surface microhardness of enamel after microabrasion. materials and methods: thirty freshly extracted human premolars were selected. all samples were subjected to har...
The amount of fluoride adsorbed onto hydroxyapatite increased as the aqueous fluoride concentration increased. When the aqueous fluoride concentration exceeded 100 ppm, the total amount of fluoride adsorbed onto hydroxyapatite decreased after being washed off with water three times. It is postulated that when the aqueous fluoride concentration exceeds 100 ppm, a multilayer structure of calcium ...
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