Thesis (Ph. D.)--University of Florida, 1998. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis--University of Helsinki, 1978.

Thesis (M.Sc.D.)--Boston University School of Graduate Dentistry, 1974. Orthodontics. / Bibliography included.

Aim: The aim of this retrospective study was to record the number and demographics of patients presenting with maxillofacial fractures at the Garankuwa Hospital, University of Limpopo, Medunsa Campus. In addition, the nature of these injuries and the aetiological factors involved were recorded and analysed. Materials and methods: The approach to this study was collection of data from records of patients who were treated at the Maxillofacial and Oral Surgery Department for injuries (fractures) to facial bones. All the records for the period January 2002 to December 2005 were analysed. Results: For the period (2002-2005) under review 4000 patient files were retrieved and analysed. These consisted of 1755 (43,88%) patients with mandibular or middle or upper third cranio-facial fractures who were included in this study and 2245 (56,13%) patients who had been treated as in or out patients for other oral and maxillo-facial procedures or pathology, who were excluded. The 1755 patients consisted of 232 (13.22%) females and 1519 (86.55%) males giving a male to female ratio of 6.55:1. Seventy percent of all the patients were in the age group 20-39 years with a peak frequency in the 3rd decade. The minimum age was two years and the maximum age was 88 years. A total of 2427 fractures were recorded. Of these 2077 (85.58%) occurred in the mandible where the most common sites were the angle (28.97%), the parasymphisis (17.43%) and the body (14.75%). Nearly 80% of the fractures were caused by personal assaults, 14.87% by motor vehicle accidents, 2.34% by gunshot wounds and 3.93 % by falls. Conclusion: In conclusion this study has shown that in a South African population being studied, the leading cause of fractures to the maxillofacial skeleton were interpersonal violence (assaults and gunshots) followed by motor vehicle accidents.

Orientador: Marcelo Coelho Goiato / Abstract: The purpose of this study was to analyse the influence of time exposure to the environmental factors, chemical disinfection with 2% chlorhexidine-based solution and two distincts pigments about dimensional changing and maintenance of details of two silicones for use in maxillofacial prosthesis. Thirty specimens were fabricated for each silicone using a matrix, conformed closely to the specifications for nonaqueous, elastomeric dental impression materials established by the Revised American Dental Association n° 19 and the ISO 4823:1984. Specimens were separated in three groups: control (colourless), pigmented with commercial cosmetic (makeup powders) and pigmented with iron oxid. Specimens were analysed in a comparator microscopic (Carl Zeiss) and stereoscopic loupe. The readings were realized after polymerization of the specimens, and after 30 and 60 days, with and 157 without disinfection. The data were submited to the statistic analysis, by the Tukey's Test. The results indicated that all groups presented contraction; the chemical disinfection only changed the dimensional stability of the Silastic cosmetic pigmented group; the dimensional stability of Silastic was affected after 60 days of exposition in all groups. For the Brascoved silicone, the chemical disinfection only didn't have influence about dimensional stability in initial period; the exposition factor had influence about the dimensional stability of Brascoved in all periods and groups. The details were maintained in all specimens for both silicones, independent of the exposition time, of the pigments or disinfection. / Mestre

>Magister Scientiae - MSc / Background: Changing trends have been observed in the prevalence, etiology, imaging practice and pattern of presentation of mid facial fractures in different geographical regions. Conventional (plain) radiographs remain the most common initial investigative tool for general appraisal of suspected fractures, while advanced imaging is currently the most common final investigation. This study explored the clinico-radiologic patterns of mid facial fractures with main focus on demographic characteristics, etiology, fracture patterns and imaging practice. Aim: To determine the Prevalence, Clinical and Radiologic patterns of mid-facial fractures at Tygerberg Oral Health Centre, Faculty of Dentistry, University of the Western Cape Methodology: A retrospective cross sectional quantitative descriptive study of mid facial fractures was conducted at The University of the Western Cape’s Faculty of Dentistry based at the Tygerberg Oral Health Centre (TOHC). The study population comprised 239 patients who presented with mid facial fractures over 2 years, from January 2015 to December 2016. The data captured included demographic details, etiology, fracture site(s) and radiological investigations performed. Results: A vast male predominance was observed (M: F=5.3:1). The age range was 7-76 years (mean 31.94; SD 13.13). The most affected age category was 21 to 30 years (39.7%) while the least affected groups were children aged 0 to 10 years and patients above 70 years old. A total of 285 individual fractures were identified among the 239 patients (mean of 1.2 fractures per patient). The most common pattern of fracture was zygomatic complex (24.9%) while Le Fort fractures were the least common (5.3%). 20.1% of patients had concomitant fractures of other bones of the face and skull. There was no association between gender and site of fracture (p = 0.812). Panoramic radiography was the most common initial investigation. A panoramic radiograph in combination with various conventional extraoral views were sufficient for diagnosis in 18.8% of the patients. However, majority (53.6%) had all the three types of imaging performed (panoramic radiograph, conventional extra oral views and advanced imaging). The most common etiological factor was assault (73.6%). There was no association between gender and aetiology of fracture (p = 0.537)

Propofol has been gaining increased attention as a sole agent in providing procedural sedation due to its predictable pharmacokinetics and favorable amnestic properties. Oral and maxillofacial surgical procedures are unique in duration and concomitant use of local anesthesia making it difficult to evaluate data obtained from other specialties. The purpose of our study is to evaluate the safety, efficacy and satisfaction among surgeons and patients using propofol only, for procedural sedation during the extraction of third molars. Propofol 10mg/ml was administered using an induction dose of 0.5 to 1mg/kg over 60 seconds followed by bolus doses of 10 – 20mg every minute to achieve a Ramsay sedation score of at least 3. Respiratory compromise was identified in 15% of patients. Hemodynamic compromise was identified in 15%. Patient and surgeon satisfaction was high however propofol does not represent the ideal drug as a sole agent for procedural sedation in oral surgery due to the frequent need for hand restraint (40%).

Thesis (M.S.)--University of Michigan, 1968.

Thesis (M.S.)--University of Michigan, 1963.

Thesis (M.S.)--University of Michigan, 1969.