Results 121 to 130 of about 3,976 (163)
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Effect of waterborne fluoride on fluoride concentration and solubility of dental enamel
Australian Dental Journal, 1977Abstract— Enamel F level and depth of acid etch were measured in 166 teeth from 8 communities with water F ranging from .07‐5.0 ppm. Enamel F decreased progressively from the surface inward and was positively correlated with water F. Depth of acid etch was inversely related to enamel F and water F.
I L, Shannon, J N, Trodahl
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Solubility, unit cell dimensions and crystallinity of fluoridated human dental enamel
Archives of Oral Biology, 1989The aim was to describe the dimensions of the fluorhydroxyapatite unit cell and the solubility of fluorhydroxyapatite as a function of the fluoride concentration in the apatitic lattice. Various amounts of powdered human dental enamel were suspended in a pH 4.5 acetate buffer containing fluoride.
M J, Larsen, S J, Jensen
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Archives of Oral Biology, 1994
As calcium fluoride formation following topical application of fluoride may be responsible for at least some of the caries-reducing effect of fluoride, the concentration of fluoride necessary to induce its formation were examined. The aim was to determine the degree of supersaturation with respect to calcium fluoride necessary for inducing its ...
M J, Larsen, S J, Jensen
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As calcium fluoride formation following topical application of fluoride may be responsible for at least some of the caries-reducing effect of fluoride, the concentration of fluoride necessary to induce its formation were examined. The aim was to determine the degree of supersaturation with respect to calcium fluoride necessary for inducing its ...
M J, Larsen, S J, Jensen
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Calcium solubility of dental enamel following Er, Cr:YSGG laser irradiation
SPIE Proceedings, 2000Ever since the laser was introduced in dental medicine, there has been a constant discussion about its use in caries prevention. Various studies have already illustrated the possible uses of CO2 and argon lasers in this field of dentistry. The aim of the present study was to examine the Er,Cr:YSGG laser with regard to potential in reducing the acid ...
Christian Apel +2 more
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Lasers in Surgery and Medicine, 2002
AbstractBackground and ObjectiveThe objective of the present study was to investigate the effect of sub‐ablative Er:YAG (λ = 2.94 μm) and Er:YSGG (λ = 2.79 μm) laser radiation on the acid solubility of dental enamel. The influence of fluoride application prior to laser irradiation was additionally evaluated.Study Design/Materials and MethodsTo this end,
C, Apel +4 more
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AbstractBackground and ObjectiveThe objective of the present study was to investigate the effect of sub‐ablative Er:YAG (λ = 2.94 μm) and Er:YSGG (λ = 2.79 μm) laser radiation on the acid solubility of dental enamel. The influence of fluoride application prior to laser irradiation was additionally evaluated.Study Design/Materials and MethodsTo this end,
C, Apel +4 more
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Effects of 960-nm Diode Laser Irradiation on Calcium Solubility of Dental Enamel: An in Vitro Study
Photomedicine and Laser Surgery, 2006Objective: The aim of this study was to investigate the effects of 960 nm diode laser and acidulated phosphate fluoride on calcium solubility of human dental enamel. Background Data: Interest in diode lasers has grown steadily since its invention due to its inherent ...
Ilka T, Kato +3 more
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The inorganic composition and solubility of dental enamel from several specified population groups
Archives of Oral Biology, 1972Abstract The solubility in lactate buffer (pH 4.5) and the inorganic composition of intact enamel surfaces of 234 teeth obtained from eleven specified and diverse sources including trisomic 21 subjects, were studied. The solubility was determined at conditions approximating to equilibrium and the surface and two succeeding enamel layers (each approx.
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The Bulletin of Mathematical Biophysics, 1966
Equilibrium solubility considerations are presented based on the assumption that equating the kinetic expressionq, developed in part I, to zero can describe the equilibrium or steady state between hydroxyapatite and salt solutions. From this expression is derived Hodge's empirical equilibrium equation,C=KH. Further, a lograithmic transformation of this
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Equilibrium solubility considerations are presented based on the assumption that equating the kinetic expressionq, developed in part I, to zero can describe the equilibrium or steady state between hydroxyapatite and salt solutions. From this expression is derived Hodge's empirical equilibrium equation,C=KH. Further, a lograithmic transformation of this
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Archives of Oral Biology, 1989
Samples of 200 mg powdered enamel apatite were suspended in 10 ml of aqueous solutions made from phosphoric acid and calcium hydroxide for 60 days at 20 degrees C. Calcium and phosphate concentrations were determined by spectroscopy; pH and the concentrations of fluoride and carbonate by electrometry.
M J, Larsen, S J, Jensen
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Samples of 200 mg powdered enamel apatite were suspended in 10 ml of aqueous solutions made from phosphoric acid and calcium hydroxide for 60 days at 20 degrees C. Calcium and phosphate concentrations were determined by spectroscopy; pH and the concentrations of fluoride and carbonate by electrometry.
M J, Larsen, S J, Jensen
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The Bulletin of Mathematical Biophysics, 1966
A model of the dissolution kinetics of powdered enamel is developed based on the kinetic rate termq, $$q = K'H - k'C \cdot P_1$$ , whereH=[H +],C=[Ca ++] andP 1=[HPO 4 = ].
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A model of the dissolution kinetics of powdered enamel is developed based on the kinetic rate termq, $$q = K'H - k'C \cdot P_1$$ , whereH=[H +],C=[Ca ++] andP 1=[HPO 4 = ].
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