School of 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 Sectioning of the inferior dental nerve in rats(1969) Retief, D. H.; Dreyer, C. J.Item Relationship between fluoride concentration in enamel, DMFT Index, and degree of fluorosis in a community residing in an area with a high level of fluoride(1976) Bischoff, J. I.; Van Der Merwe, E. H. M.; Retief, D. H.; et al.The DMFT index, degree of fluorosis (DEGF), fluoride concentration in enamel (F), and depth of etch (D) were determined in participants living in an area with a high fluoride level. A statistically significant difference was found between men and women for F and D. A significant correlation was established between F and DEGF and between F and age for men, but not for women.Item The effect of frozen irradiated bone homografts on the healing of defects in the mandible and femur of the rat(1971) Cleaton-Jones, P. E.; Retief, D. H.; Maier, G.1. The effects of frozen irradiated homogenous bone grafts on the healing of circumscribed defects in the mandibles and femora of forty albino rats have been studied. 2. The grafts were well tolerated by the host animals and did not appear in any way either to stimulate or to inhibit osteogenesis. The rate of healing of the defects containing the homografts compared favourably with that of the control defects.Item Clinical experience with an epoxy resin adhesive for direct bonding of orthodontic attachments*(1972) Dijkman, J. F. P.; Retief, D. H.An epoxy resin formulation developed in the Dental Research Unit has been subjected to further clinical trials. Six patients, were used in the study. They were divided into two age groups and all the teeth, including the first molars, bonded. Rubber dam was used to keep the crowns dry during the setting period of the resin. In the younger group the mean failure rates were 27 per cent for anterior teeth and 70 per cent for the first molars. In the older group these rates were 11 per cent for incisors, 11 per cent for canines, 20 per cent for premolars and 20 per cent for first molars. While no figures are available in the literature relating to direct bonding to first molars, the results obtained in this study for the other teeth compare favourably with data previously published by other authors after trials using other types of cement.Item Activation analysis in biological material(1975) Turkstra, J.; Retief, D. H.; Cleaton-Jones, P. E.Item A laboratory evaluation of a new pit and fissure sealant(1976) Retief, D. H.; Austin, J. C.Item A laboratory evaluation of a new pit and fissure sealant(1976) Retief, D. H.; Austin, J. C.Item A preliminary clinical report of a new composite anterior restorative material(1974) Barbakow, F.; Friedman, M.; Retief, D. H.
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