نتایج جستجو برای: enamel microhardness
تعداد نتایج: 13194 فیلتر نتایج به سال:
Introduction Use of fluoridated toothpaste is the easiest and most common form of applying fluoride. Fluoride absorption can increase tooth microhardness. This study aimed to investigate the changes of primary tooth enamel microhardness following application of KAM, BATH, and CREST pediatric toothpaste. Materials and Methods Microhardness of 45 sound primary molar teeth was measured before t...
OBJECTIVES To review the available literature investigating the effects of peroxide-based products and solutions on enamel and dentine properties. SOURCES All original scientific full papers listed in ISI Web of Science and Medline were included in this review using the search terms peroxide AND (enamel OR dentin*) up to the end of 2006. CONCLUSIONS The majority of studies indicate that per...
There is evidence for a genetic component in caries susceptibility, and studies in humans have suggested that variation in enamel formation genes may contribute to caries. For the present study, we used DNA samples collected from 1,831 individuals from various population data sets. Single nucleotide polymorphism markers were genotyped in selected genes (ameloblastin, amelogenin, enamelin, tufte...
Purpose was to evaluate the effect of toothpastes pH on enamel remineralization. Six fluoride toothpaste and one without fluoride were applied to the enamel slabs. Twenty eight enamel slabs were divided into seven groups and subjected to a daily cycling regimen with brushing treatments, demineralization and remineralization in artificial saliva. The surface microhardness (SMH) was calculated fr...
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...
background: the purpose of this study was to determine the effect of three chewing gums and paraffi n on the remineralization and the hardness of demineralized enamel. materials and methods: a total of 12 subjects wore intraoral palatal appliances with two demineralized bovine enamel slabs. the study consisted of four experimental periods each lasting 21-days, during which subjects were assigne...
Abstract This study evaluated the chemical composition and microhardness of human enamel treated with an Enamel Matrix Derivative (EMD) solution, bond strength between composite resin this enamel. Thirty samples were randomly divided into three groups: Untouched (UE), Demineralized (DE) Treated EMD (ET). DE ET groups subjected to acid challenge (EMD was directly applied over conditioned left fo...
laser irradiation has been suggested as an adjunct to traditional caries prevention methods. but little is known about the cariostatic effect of diode laser and most studies available are on permanent teeth.the purpose of the present study was to investigate the effect of diode laser irradiation combined with topical fluoride on enamel surface microhardness.forty-five primary teeth were used in...
Dental bleaching occurs due to an oxidation reaction between the bleaching agents and the macromolecules of pigments in the teeth. This reaction is unspecific and the peroxides can also affect the dental matrix causing mineral loss. On the other hand, recent studies have suggested that the thickener agent carbopol can also cause mineral loss. Thus, the objective of this study was to evaluate in...
This study was undertaken on human and Rhesus monkey enamel using three methods of analysis to gain information concerning the pattern of enamel calcification: (1) microhardness pattern of enamel mineralization; (2) microradiography; and (3) plastic substitution studies. Halves of teeth were selected and tested on a Tukon Microhardness Tester with a Knoop Diamond Indentor. The other half of eac...
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