Sökning: "Microradiography"

Visar resultat 1 - 5 av 9 avhandlingar innehållade ordet Microradiography.

  1. 1. Enamel of primary teeth - morphological and chemical aspects

    Författare :Nina Sabel; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Demineralization; Enamel; Enamel hypoplasia; Microradiography; Mineralization; Neonatal line; Polarized light microscopy; Scanning electron microscopy; Secondary ions mass spectrometry; X-ray microanalysis;

    Sammanfattning : Enamel is one of the most important structures of the tooth, both from a functional and esthetic point of view. Primary enamel carries registered information regarding metabolic and physiological events that occurred during the period around birth and the first year of life. LÄS MER

  3. 2. Amelogenesis imperfecta : an epidemiologic, genetic, morphologic and clinical study

    Författare :Birgitta Bäckman; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; amelogenesis imperfecta; enamel defect; epidemiology; genetics; microradiography; scanning electron microscopy;

    Sammanfattning : Amelogenesis imperfecta (AI) is a genetically determined enamel defect characterized by genetic and clinical heterogeneity .The prevalence and incidence of AI were established in the county of Västerbotten, northern Sweden, in 3-19-yr-olds born 1963-79, as were the mode of inheritance and clinical manifestation of AI. LÄS MER

  4. 3. Studies on oral clearance of citric acid and its effect on enamel erosion

    Författare :Enas Badawi Bashir; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Citric acid; Saliva; Site specificity; Degree of saturation; In vitro model; Flow rate; Enamel erosion; Clearance rate; Frequency; Microradiography; Scanning microscopy;

    Sammanfattning : Citric acid in foods is one of the most important factors causing erosionof enamel. The aims were to study citric acid clearance from the oral cavity, the effect of the clearance on the salivary saturation with respect to hydroxyapatite (OHAp) and the effect of the clearance rate and frequency of the citric acid challenges on enamel erosion. LÄS MER

  5. 4. Water, hyaluronan and surface shape in corneal wound healing after excimer surgery : experimental studies

    Författare :Beat A Weber; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :photorefractive keratectomy; excimer laser; rabbit; cornea; wound healing; microradiography; hyaluronan; planimetry; leukocyte protein marker; haze; regression; surface irregularities; subepithelial deposits; remodeling; epithelial hyperplasia; corticosteroids;

    Sammanfattning : Excimer laser photorefractive keratectomy (PRK) has evolved to a widely performed procedure. The excimer laser corrects refractive ametropias by removing a calculated amount of anterior corneal stroma with great precision and with minimal damage to the adjacent tissues. The correction of myopia up to -5. LÄS MER

  7. 5. Dentofacial morphology in Turner Syndrome karyotypes

    Författare :Sara Rizell; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; orthodontics; Turner syndrome; genetics; karyotype; geno-phanotype correlation; anthropometrics; craniofacial morphology; dental arch; dental crown width; enamel; primary teeth; elemental composition;

    Sammanfattning : The overall aim of this thesis was to study dentofacial morphology in Turner syndrome (TS) versus controls and the influence hereupon from karyotype. One hundred thirty two TS females (5-66 years of age), from Göteborg, Uppsala and Umeå were participating. LÄS MER