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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Community dentistry and oral epidemiology 10 (1982), S. 0 
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract The periodontal condition of a cross-section of individuals aged between 15–59 years was characterised from clinical and radiographic observations of dental calculus, gingival inflammation, the level of the gingival attachment, alveolar bone loss, teeth missing or requiring extraction for periodontal reasons. The common characteristics of the profile in Tonga and W. Samoa were a high prevalence of the factors common to periodontal disease: calculus and gingival inflammation; a progressive apical movement of the gingival attachment; and alveolar bone Joss. All these criteria showed a positive age dependency with calculus (particularly subgingival calculus) and gingival inflammation being very commonly associated with all tooth types at an early age, less than 30 years. Tooth loss observed was presumed to be previously associated with periodontal disease because the prevalence of dental caries was very low in both populations. Substantial differences were observed in the number of missing teeth between Tongan and Samoan populations, the Tongan subjects having a high rate of tooth loss. From radiographic interpretations of the periodontal conditions fewer subjects in Tonga were assessed as having no disease, and there was a higher prevalence of progressive destructive disease in Tonga than in W. Samoa. The proportion of subjects in both countries with no disease decreased rapidly with age. There was no evident explanation of the greater severity of disease in Tonga than in W. Samoa. The prevalence of microbial plaque, calculus and gingival inflammation was very high in all subjects at all ages particularly over 30 years in both populations.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Community dentistry and oral epidemiology 6 (1978), S. 0 
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract Examination of 2,138 subjects, aged 15–65+ years, was carried out by calibrated examiners using mirrors and fibre optic illumination. Each subject was scored by the Periodontal Status Index, PSI (WHO Oral Health Surveys), Periodontal Index, PI (Russell) and the Oral Hygiene Index, OHI (Greene & Vermillion). For the PSI, PI and OHI all scores were age-dependent with the exception of soft deposits in PSI and OHI, which were age-independent. The advantages of the PSI system were considered to be the ease of scoring and the opportunity to assess treatment requirements, in terms of time, at the public health service level. Disadvantages were lack of quantitation, difficulties of diagnosis of intense gingivitis, and localized and general conditions. The PI and OHI systems provided a more objective, quantitative and sensitive basis of scoring than the PSI. Statistical tests showed that respective indices are associated and measuring the same kind of criteria. Examiner calibration and consistency were similar for both scoring systems.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Community dentistry and oral epidemiology 5 (1977), S. 0 
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The effectiveness of a 1 % chlorhexidine-containing dental gel on dental plaque and gingival health was evaluated over a period of 6 months using a double-blind procedure. One hundred and seventeen mentally retarded subjects aged between 10–17 years resident in an institution were divided into two groups. One group was assigned daily brushing with the 1 % chlorhexidine gel, the other group a placebo quinine sulfate-containing gel. No other form of oral hygiene was used during the experimental period. Assessment of dental plaque accumulation and gingivitis was made at 0, 1, 3, and 6 months. An assessment was also made 2 months after the gel was withdrawn from use and normal toothbrushing procedures resumed. No clinical or statistical advantage was noted in plaque or gingivitis scores in the group receiving chlorhexidine treatment during the 6-month period. This group showed a higher prevalence of tooth staining. It was concluded that periodontal severity and poor oral hygiene exceeded the plaque- and gingivitis-preventing potential of chlorhexidine.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Community dentistry and oral epidemiology 5 (1977), S. 0 
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: abstract A dental gel containing 1 % chlorhexidine was applied daily to the teeth of mentally retarded patients for a period of 6 months. Although possible antimicrobial effects were noted, the gel had no practical value in reducing the numbers of different plaque bacteria. It is suggested that the lack of effect may be due to changes in susceptibility of the oral flora surviving in the mouth, allowing subsequent recolonization of the teeth.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Community dentistry and oral epidemiology 14 (1986), S. 0 
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract 692 dental adults in the age ranges, 15-19, 20-29, and 35-44 yr, were assessed for their periodontal conditions and treatment needs using the Periodontal Index (PI) and Community Periodontal Index of Treatment Needs (CPITN). The relative advantages and disadvantages of the two indices were evaluated as epidemiological screening procedures. The CPITN (which calls for examination of only 10 selected teeth) identified higher proportions of adults and teeth with a healthy periodontal condition and also those with periodontitis than the PI (which requires examination of all teeth). The proportion of adults and teeth with gingivitis as the worst condition was greater than when assessed by the PI. Evaluation of individual adult scores by PI and CPITN suggested that the CPITN, despite being a partial recording index only, is more sensitive in identifying existing periodontal conditions and treatment needs than the PI. This is explained by the clinical criteria and periodontal probe utilized in the CPITN. Although the original purposes of the PI and CPITN differ, it is proposed that as a epidemiological screening procedure for assessing periodontal treatment needs the CPITN is to be preferred to the PI.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Community dentistry and oral epidemiology 14 (1986), S. 0 
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract 2,400 dentate adults (15 to 65 yr), representative of rural and urban areas of all twelve regions of the Philippines, were screened for their periodontal treatment needs using the Community Periodontal Index of Treatment Needs (CPITN). The distribution pattern of CPITN scores for the criteria, healthy, gingival bleeding (on probing), calculus, 4–5 mm and 6 mm or deeper periodontal pockets was similar for adult populations in each of the twelve regions. Calculus predominated as the most frequently recorded score, with a prevalence exceeding 70% in young adults but decreasing to about 40% in older adults. The decrease in prevalence of calculus with age was associated with an increase in 4–5 mm pocketing, 4% in young adults and about 60% in older adults. Periodontally healthy mouths and cases of deep pocketing were relatively uncommon. The assessed treatment need was predominantly Type 2 (scaling and improved oral hygiene). Need for complex treatment (Treatment Need Type 3) was low involving only 4% of older adults. The pattern of assessed periodontal treatment needs of adults in the Philippines was indicative of endemic gingivitis and calculus and moderate to low prevalence of pocketing.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 31 (1996), S. 0 
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The distribution of basic fibroblast growth factor (bFGF) in periodontal ligament (PDL) tissue was investigated in samples which were obtained from freshly extracted human teeth. The PDL tissue was collected by scraping, and bFGF was identified and localized by immunohistochemistry. Fibroblasts. endothelial cells, some fibrocytes and extracellular matrix (ECM) stained positively for bFGF It was observed that cells from healthy PDL stained more intensely than those from PDL of teeth associated with chronic periodontitis; histological cell counts revealed that the numbers of fibroblasts was greater (p〈0.0005) in healthy PDL than in diseased PDL tissue. The results of this study show that bFGF is produced primarily by PDL fibroblasts and endothelial cells in the PDL and that bFGF levels may be decreased in tissue associated with chronic periodontal lesions.
    Type of Medium: Electronic Resource
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