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Fluoride release from a glass-ionomer cement was measured in vivo during an 8-day period. Maxillary acrylic resin appliances, each carrying four glass-ionomer cement specimens, were worn by four subjects at night. Unstimulated whole saliva samples were collected before the subjects retired to bed (pretreatment samples) and in the morning (posttreatment… (More)
An in vitro study was carried out testing the shear/peel bonding strength of brackets cemented with a glass-ionomer cement. It was found that the adhesive achieves its optimal bond strength at 24 hours. It is suggested that there is still scope for improvement of the material's mechanical properties and the use of prolonged clinical trials.
Dental elastomeric impression materials of different consistencies, representing addition and condensation silicones, polysulphides and a polyether, were studied to determine their mechanical properties in terms of tearing energy, tensile properties and modulus determined at high strain rates. Whilst the polysulphides had the greatest resistance to tearing,… (More)
The dimensional stability of a range of elastomeric impression materials has been assessed to study the effect of storage in sterilizing solutions. Experiments were carried out on audiological silicones of condensation and addition types. Further, a number of dental-based materials comprising a polysulphide, a polyether, a condensation and an addition… (More)
Persistent and high-level expression of human liver prolidase in vivo in mice using adenovirus. Radharaman. Morphological and functional differentiation in BE (2)-M17 human neuroblastoma cells by treatment with Trans-retinoic acid. Chemical warfare agent and biological toxin-induced pulmonary toxicity: could stem cells provide potential Efficacy of the… (More)
The dimensional stability of a range of dental elastomeric impression materials has been assessed, to study the effect of storage in sterilising solutions. Experiments were carried out on polysulphides, a poly(ether urethane) and several condensation and addition silicones. The last materials had the greatest dimensional stability over a range of storage… (More)