نتایج جستجو برای: decalcification
تعداد نتایج: 681 فیلتر نتایج به سال:
INTRODUCTION A new, highly filled primer is currently marketed as a fluoride delivery system effective in reducing white spot lesions in orthodontic patients. However, no studies in the literature support this claim. The purpose of this in-vivo study was to investigate the retention and the efficacy of this primer in reducing the formation of white spot lesions. METHODS In each patient for wh...
Demineralized enamel grooves were exposed to an acid gel at pH=5 for 3weeks after irradiation with a KrF excimer laser with a wavelength of 248nm (total energy dose= 172 J/cm2) er with the second harmonic wave of a Q-switched Nd:YAG laser with a wavelength of 532nm (totai energy dose=100JIcm2), The mineral distributions were assessed quantitatively by transversal microradiography. Compared with...
This study explored the reactive processes of atmospheric carbonation and consequences with respect to cementitious materials. Two model pastes were used: hydrated C3S (including C-S-H portlandite) a paste prepared by hydrating blend nanosilica only). The two carbonated under accelerated conditions in laboratory. resulting mineralogical assemblage was examined using X-ray diffraction, thermogra...
The aim of this study was to assess applicative properties of the produced acc. to own prescription dental anti-inflammatory hydrogel with Carbopol 974P. Ketoprofen pharmaceutical availability was tested from hydrogel with Carbopol 974P and to compare - from hydrogels of similar prescription produced on the base of xanthan gum carboxymethylcellulose sodium salt. Very high pharmaceutical availab...
Background and aims. Remineralization of incipient caries is one of the goals in dental health care. The present study aimed at comparing the effects of casein phosphopeptide-amorphous calcium phosphate complex (CPP-ACP), Remin Pro(®), and 5% sodium fluoride varnish on remineralization of enamel lesions. Materials and methods. In this in vitro study, 60 enamel samples were randomly allocated to...
This article summarizes long-term degradation mechanisms of cementitious materials in contact with fresh and saline solutions based on a review experimental observations field laboratory studies. In addition, simplified thermodynamic modelling approach was used to calculate the effect solution composition, ranging from river water sea water, intensity leaching kind quantity phases formed at int...
AIM Casein phosphopeptide stabilised amorphous calcium phosphate (CPP-ACP) has been shown to remineralise enamel subsurface lesions. The aim of this study was to determine the effect of a paste containing 10% CPP-ACP (Toothmousse; GC) on enamel surface microhardness in vitro. MATERIALS AND METHODS Thirty enamel blocks (3x2 mm) were prepared for the study group from the buccal surface of ex...
This study aimed to evaluate the effectiveness of fluorescence-based methods (DIAGNOdent, LF; DIAGNOdent pen, LFpen, and VistaProof fluorescence camera, FC) in detecting demineralization and remineralization on smooth surfaces in situ. Ten volunteers wore acrylic palatal appliances, each containing 6 enamel blocks that were demineralized for 14 days by exposure to a 20% sucrose solution and 3 o...
An increasing interest in dental erosion as a clinical and scientific phenomenon has led to concerted efforts to identify agents which might protect against erosion. In this study, nanoindentation was used to investigate inhibition of erosive enamel demineralisation over time scales with direct clinical relevance. Nanohardness of polished human enamel specimens (n = 8 per group) was measured at...
The mobile health market is rapidly expanding and portable diagnostics tools offer an opportunity to decrease costs and increase the availability of healthcare. Here we present a smartphone based accessory and method for the rapid colorimetric detection of pH in sweat and saliva. Sweat pH can be correlated to sodium concentration and sweat rate in order to indicate to users the proper time to h...
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