Department of Anesthesiology and Sedation

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Browsing by Author "Faculty of Dentistry"

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    Comparative bond strengths of stainless steel orthodontic brackets bonded with different bonding agents
    (University of the Western Cape, 2007) Hudson, Athol Peter Gilfillan.; Grobler, Sias; Harris, Angela; Faculty of Dentistry
    The aim of this project was to compare the shear bond strengths of three light cure orthodontic adhesive resins with three different stainless steel molar brackets.
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    Contamination, infection and inflammation control in an experimental mucosal cyst model using athymic nude mice
    (University of the Western Cape, 2007) Wang, Meng; Hille, J.J.; Faculty of Dentistry
    Includes Bibliographical references (leaves 83- 94).Forty-three male athymic nude mice were implanted with human vaginal mucosal cysts under general anaesthesia with Ketamine [25mg/kg] and Medetomidine [0.5mg/kg]. Cysts in 37 mice were recovered after 9 weeks of growth. twenty three cyst linings had retained the original structure of the vaginal epithelium. No marked deifference was present between the thickness of 9 week old linings and donor vaginal epithelium. The contaminants isolated from the skin of mice before implantation were mainly normal commercals of healthy experimental animals. There was no distinct difference in the number of cases with intact cyst formation between the terramycin/vitamin cocktaik group. The frequency of poor wound healing and/ or murine epidermis ingrowth was three times higher in animals stitched with silk sutures that in those cases where nylon sutures were used.
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    The effect of storage time on dimensional accuracy of elastomeric impression materials
    (University of the Western Cape, 2008) Osio, Mary A.; Osman, Yusuf I.; Faculty of Dentistry
    Several factors play a role in stability of impressions made from elastomeric impression materials. These include; polymerization shrinkage, loss of by-products during condensation, thermal contraction from oral temperature to room temperature, imbibition when exposed to water, disinfectant or high humidity and incomplete recovery from deformation due to viscoelastic behavior. An ideal impression material should be dimensionally stable over time to allow for pour at the convenience of the operator. Several studies evaluated the dimensional accuracy of elastomeric impression materials based on various factors including effects of repeat pour, temperature, humidity, disinfectants, impression techniques, and filler loading amongst others. Most of the previous studies did not use the standardized method described by the ADA specification for elastomeric impression materials.
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    The effect of thermal-cycling on the bond strength of a two step and single-step dentin bonding agent
    (University of the Western Cape, 2010) Omer, Amir Isam; Osman, Yusuf I.; Faculty of Dentistry
    The aim and objective of this study was to determine the bond strength of a twostep and a single-step dentin bonding agent and to determine the effect of repeated thermal-cycling from 50C and 550C on the bond strength values of these dentin bonding agents.
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    Multidrug sedation for dental procedures in children younger than eight
    (University of the Western Cape, 2005) Bester, E.J.; Roelofse, James; Faculty of Dentistry
    In this case study research project I have determined that multidrug sedation in children younger than eight years are possible.Conscious sedation [or sedation where verbal contact with the patient is possible] can be used successfully to decrease anxiety and fear for unpleasant experiences, like dental procedures. Behaviour therapy in conjunction with one or more drugs can be used to depress the central nervous system in order to decrease the patient’s awareness of unpleasant stimuli. This enables treatment to be carried out without patient interference. Extensive literature surveys were done to determine the ideal drugs as well as the ideal route for conscious sedation in dental treatment for children. In this study project drugs like midazolam, propofol, alfentanyl and ketamine were titrated intravenously to achieve conscious sedation.