BACKGROUND: Various treatment modalities are available to improve esthetics of fluorosed teeth based on its severity. AIM: The aim the study was evaluate clinical performance different minimal invasive protocols mild moderate teeth. METHODS AND MATERIALS: Before interventions, tooth color coordinates L, a and b were recorded for 160 by Vita Easyshade V. Participants randomly allocated in eight ...

Physiological maturity of bananas is vital importance in determination their quality and marketability. This study assessed, with the use a Vis/NIR hyperspectral imaging (400–1000 nm), feasibility differentiating six levels (maturity level 2, 4, 6 to 9) green dwarf banana characterizing changes during maturation. Spectra were extracted from three zones (pedicel, middle apex zone) each finger, r...

Color stabilities of experimental composite resins based on Bis-EFMA (a novel bisphenol A [BPA]-free monomer system) with 3M ESPE FiltekTM Z250 (FZ) and A-glycidyl methacrylate (Bis-GMA) urethane dimethacrylate (UDMA) were compared. was synthesized via the reaction between 9,9-bis[4-(2-hydroxyethoxy)phenyl]fluorene 2-(methacryloyloxy)ethyl isocyanate. Experimental Bis-EFMA-, Bis-GMA-, UMDA-base...

This study developed experimental gels containing titanium tetrafluoride (TiF4) combined with commercial 35% hydrogen peroxide (HP), and evaluated bleaching efficacy pH of the gels, mineral content morphology enamel submitted to these treatments. In phase-1, different stock mixed TiF4 were HP. phase-2, selected tested on enamel/dentin specimens (n=8): HP; HP Natrosol+TiF4 (HPnT); Natrosol+Chemy...

conclusions coffee caused the most color changes in the examined resin denture teeth. tea and cola left less staining on the teeth, and distilled water caused the least discoloration. generally, investing by heat- and cold-cured acrylic resins can significantly affect the color stability of resin denture teeth; however, heat-cured acrylic resins had fewer color changes. results there were signi...

AIM There is limited and inconsistent information on some factors affecting visual shade selection. The aim of this study was to evaluate the influence of shade guide type and professional experience on shade-matching results. MATERIALS AND METHODS Thirty Dental students (DS), 30 General dentists (GDs) and 30 Dental specialists (S) participated in this study. The participants were asked to ma...

The F(δ-)···F(δ-) intermolecular synthon was recently observed to be useful for generating a two-dimensional layered supramolecular architecture on the Ag(111) surface (Kawai, et al., ACS Nano, 2015). This was formed when the entirely negative covalently bonded fluorine atoms in phenyleneethynylene(bis(2,3,5,6-tetrafluoro-4-(2,3,4,5,6-pentafluorophenylethynyl)phenyl)-ethyne (BPEPE-F18)) were in...

AIM To spectrophotometrically and visually test whether the peri-implant mucosal color differs from the color of the natural gingiva. MATERIAL AND METHODS Forty single implants in the incisor and premolar region of 40 patients were assessed 3-7 years after implant placement. The differences of the color components lightness, chroma along red-green axis, chroma along yellow-blue axis, and the ...

The isotopic composition of surface water vapor flux (δE) is a quantity frequently used to investigate the local and regional cycle. This study reports results comparative evaluation δE determined with Keeling plot flux-gradient methods using high-frequency data collected at cropland site lake site. Three regression models, ordinary least squares (OLS), York's solution (YS), geometric mean regr...