Research Outputs (Oral Health Sciences)
Permanent URI for this collectionhttps://wiredspace.wits.ac.za/handle/10539/18776
Browse
8 results
Search Results
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 Bonding agents: adhesive layer thickness and retention to cavity surfaces with time(2001) Grossman, E. S.; Setzer, S.This study assessed bonding agent thickness, cover and the influence of long-term storage on bonding agent retention to enamel and dentine surfaces in cut occlusal cavities in 46 human molar teeth. Two specimens were etched and set aside. The remaining specimens were divided into two equal groups and treated with either Optibond or Scotchbond Multipurpose Plus (SMPP) up to the adhesive stage. Thereafter two specimens from each group were stored for 0, 1, 3, 7 and 14 days and 1, 2, 3, 6 and 12 months in 1% NaCl. After storage the cavity surfaces were examined in a scanning electron microscope (SEM) and scored as to bonding agent cover. One specimen from each treatment was then embedded in resin, two sections prepared midway through each cavity, polished and re-examined in the SEM to measure bonding agent thickness at 13 sites along the cavity surface. Both bonding agents showed highly variable and significant (P < 0.05) bonding agent cover and layer thickness according to cavity site, SMPP more so than Optibond. Pooling of SMPP adhesive was apparent in cavity angles. Mean film thickness was significantly different between Optibond (221 +/- 130 microns) and SMPP (118 +/- 106 microns). There was no significant difference in bonding agent thickness between long- and short-term storage.Item The effects of the acid etch and direct bonding technique in orthodontics on enamel surface topography(1976) Sadowsky, P. L.; Retief, D. H.Item Adhesion in dentistry(1973) Retief, D. H.Item Experimental marginal leakage around Isocap® and Compocap S® restorations(1980) Jodaikin, A.; Sparrius, O.Item The effectiveness of a primer (contact resin) in diminishing marginal leakage of a direct filling resin (isopast)(1980) Valcke, C. F.; Austin, J. C.; ValckeItem The histology of the soft palate of the vervet monkey Cercopithecus pygerythus(1975) Cleaton-Jones, P