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Carbonic anhydrase (CA) activity decreased slightly in hamster molars from one to four d after birth. It was inhibited by low concentrations of acetazolamide. Histochemically, the stratum inter-medium and stellate reticulum showed an intense staining for CA, whereas ameloblasts increased and...
In vitro corrosion of two low-copper and three high-copper deratal amalgams was examined using stressed and unstressed specimens. Stress was applied in tension; anodic polarization curves and polarization resistance were determined. In stressed condition, the passive current density was higher,...
Neuraminidase acting on the salivary bacterial agglutinating factor was isolated and purified from the culture medium of Streptococcus mitis ATCC 9811. The molecular weight and the isoelectric point of the enzyme were determined to be 42,000 and a pH of 4.6, respectively. The enzyme showed high...
Distinct composite structures are characterized by the ratio of liquid resin volume to non-filler volume of the material constituting the filler. If the ratio is less than one, there is high particle-to-particle interaction. If the ratio is greater than one, particles are pushed apart, and the...
The interaction between phospholipids and stabilizing lysosome agents such as acetylsalicylic acid (ASA), colchicine (CC), prednisolone (PD), etc., was studied using NMR spectroscopy. The peak intensity of protons arising from these compounds was reduced in liposomes containing lecithin and...
Four disclosant dyes were tested for antimicrobial activity against 27 oral reference strains and five non-oral human pathogens. Erythrosine and fluorescein inhibited most gram-positive and gram-negative organisms associated with dental plaque, and were bactericidal to selected strains. Fast...
The flexure moduli of elasticity of solid and multi-stranded orthodontic wires were determined. Results for the solid wires approximated their tensile values, but the differences were statistically significant for the stainless steel, chromium-cobalt-nickel, and nickel-titanium alloys. The...
A nuclear resonant reaction depth profiling technique was used to analyze elemental fluorine distribution in the first 20 μ m of human dental cementum. A pilot sample of six periodontally-involved teeth indicated greater levels of fluorine in exposed cementum (0.9→2.4%) compared to cementum...
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