No abstract available
MeSH terms
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Adolescent
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Adult
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Aged
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DMF Index
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Dental Calculus / epidemiology
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Dental Deposits / epidemiology
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Dental Health Surveys
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Follow-Up Studies
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Gingivitis / epidemiology
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Humans
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Middle Aged
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Occupational Dentistry
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Oral Health*
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Periodontal Diseases / epidemiology
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Periodontal Diseases / prevention & control*