Research Outputs (Oral Health Sciences)

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Start date: 1980Subject: search.filters.subject.Dental Caries

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Now showing 1 - 10 of 13
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    Depth and area of dental erosions, and dental caries, in bulimic women
    (Sage Pub, 1989) Jones, R. R. H.; Cleaton-Jones, P.
    Dental caries and the severity (depth) and area of erosions of tooth substance were studied in 11 bulimic subjects and 22 matched controls. Erosions were seen in 69% of the bulimics' teeth and in only 7% of the controls' (p less than 0.001). Depth of penetration was greater in the bulimics, extending even into the pulp, and the area of erosion was also larger. Scores for dental caries were higher in bulimics (mean DMFS 27.9, median 36) than in controls (mean DMFS 19.1, median 13.5), although the difference was not statistically significant. This study suggests that when erosions are present on the lingual surfaces of maxillary anterior teeth, as well as on the buccal surfaces of maxillary canines, premolars, and maxillary incisors, a diagnosis of bulimia is likely. Patients with these signs should be referred for medical help.
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    Effect of amalgam type on artificial caries
    (1994) Grossman, E. S.; Matejka, J. M.
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    Clinical, histological and microbiological study of hand-excavated carious dentine in extracted permanent teeth
    (2003) Bönecker, M.; Grossman, E.; Cleaton-Jones, P. E.; et al
    Changes in cultivable flora in dentine samples collected before and after hand excavation were examined in association with clinical status of the cavity surface, light microscopy and scanning electron microscopy (SEM). Thirty-five extracted permanent molar teeth with an occlusal caries lesion were excavated with hand instruments according to the atraumatic restorative treatment (ART) approach. Excavation pressure, dentine colour and consistency were recorded at the dentine-enamel junction (DEJ) prior to carious dentine removal and at the cavity floor after the final excavation; a microbiological sample of dentine was taken at both stages. Twelve restored teeth; six with positive and six with negative bacterial growth on the second sample, were selected for light microscopy and SEM. The hand-excavation removed tooth structure was soft, irreversibly damaged, dark and highly infected. Hand excavation reached dentine of increased hardness with a more normal colour to provide a sound structural base for restoration. Light and SEM examination of the cavity floor showed infected dentinal tubules in all 12 teeth examined. Linear logistic analysis showed a statistical association between light-yellow dentine on the cavity floor and an absence of bacterial growth (P = 0.006). This short-term in vitro study showed that caries-producing bacteria remained in dentine close to the cavity floor in 26/35 teeth despite clinical observations that indicated a suitably prepared cavity floor.
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    Social class, parents' education and dental caries in 3- to 5-year-old children
    (1990) Chosack, A.; Cleaton-Jones, P.; Matejka, J.; et al
    The caries prevalence of 1273-, 4- and 5-y-old white children was determined with mirror and probe under natural light at mother and child clinics. The social class of the family, the educational level of the mother and that of the father were determined from a questionnaire filled in by the accompanying adult at the time of examination. Both social class and parent's education had a statistically significant influence on the caries prevalence: those in the lower social classes and with parents without tertiary education had a much higher prevalence of caries
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    Dental caries, sugars, plaque and fluoride
    (1995) Cleaton-Jones, P. E.
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    Dental caries in 11-year-old Indians in four religious groups
    (1990) Dockrat, M.; Cleaton-Jones, P.
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    Permanent denition caries in KwaZulu and Namibia 11-year-olds
    (1990) Hargreaves, J. A.; Cleaton-Jones, P.; Matejka, J.; et al
    The permanent dentitions of 11-year-old children in Namibia (n = 295) and KwaZulu (n = 308) living in rural and urban areas were examined using WHO caries diagnostic criteria. In low fluoride areas (less than 0.15 ppmF) significantly more caries was present in rural compared to urban KwaZulu but the prevalences in rural and urban Namibia were similar although significantly higher than in an area with 1.56ppmF in the drinking water. There was significantly more caries in rural Namibia than KwaZulu but the urban prevalences in both regions were similar. It is suggested that the urban findings are useful predictors for the needs of 11-year-old black children but local baseline surveys should be undertaken before considering dental programmes, treatment or preventive, for different rural communities in South Africa.
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    Oral glucose clearance in 12-year-old South Africans
    (1997) Lowe, L. G.; Cleaton-Jones, P. E.; Smit, A. M.
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    Caries risk prediction - the way of the future
    (1994) Cleaton-Jones, P. E.