Research Outputs (Oral Health Sciences)
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Item Failure at the dental restorative-etched enamel interface(1973) Retief, D. H.Item Failure at the dental restorative etched enamel interface(1973) Retief, D. H.None of the restorative materials available to the dental profession adhere to tooth structure. The bonding of these materials could be greatly increased by etching the enamel surface prior to the placement of the restorative material. Conditioning of the enamel surface with phosphoric acid or an attenuated phosphoric acid solution is now an accepted procedure and widely applied in restorative and preventive dentistry.Item Activation analysis in biological material(1975) Turkstra, J.; Retief, D. H.; Cleaton-Jones, P. E.Item Item The quantitative determination of Ca, Na, Al, Mg, and Cl in normal enamel and dentine by neutron activation and high resolution gamma spectrometry(1970) Retief, D. H.; Cleaton-Jones, P. E.; Turkstra, J.Item The fluoride concentration in the enamel of permanent central incisors(1971) Barbakow, F. H.; De Kock, A. C.; Retief, D. H.Item The quantitative analysis of Cr, Ba, Sb, Ag, Zn, Co and Fe in normal human enamel and dentine by neutron activation and high resolution gamma-spectrometry(1970) Retief, D. H.; Cleaton-Jones, P. E.; Turkstra, J.; et alItem The intra-oral factors affecting adhesion(1970) Retief, D. H.Item An in vivo evaluation of an lontophoretic Technique for increasing the surface fluoride content in enamel(1973) Barbakow, F. H.; van der Merwe, E. H. M.; Scanes, S. G.; et alSurface enamel fluoride concentrations were determined in IS subjects before and after topical fluoride applications. These IS subjects were divided into 2 groups, one of which received the fluoride applications iontophoreti- cally whereas the control group had the identical fluoride applications without the use of the current. The results indicate that the greatest increase in fluoride concentrations resulted after 3 applications done at weekly intervals when the iontoplioretic technique was employed. Two iontophoretic fluoride applications with an interval of a week between them resulted in a less marked increase whereas no increase was observed when fluoride was applied once only. The increase in the fluoride concentration of the surface enamel was not as significant when the fluoride was applied without the use of current.