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Gingivitis as a risk factor in periodontal disease
Niklaus P Lang1, Marc A Schätzle, Harald Löe
1Prince Philip Dental Hospital, Comprehensive Dental Care, The University of Hong Kong, Hong Kong, China. nplang@dial.eunet.ch
Background:
Dental plaque has been proven to initiate and promote gingival inflammation. Histologically, various stages of gingivitis may be characterized prior to progression of a lesion to periodontitis. Clinically, gingivitis is well recognized.
Material & Methods:
Longitudinal studies on a patient cohort of 565 middle class Norwegian males have been performed over a 26-year period to reveal the natural history of initial periodontitis in dental-minded subjects between 16 and 34 years of age at the beginning of the study.
Results:
Sites with consistent bleeding (GI=2) had 70% more attachment loss than sites that were consistently non-inflamed (GI=0). Teeth with sites that were consistently non-inflamed had a 50-year survival rate of 99.5%, while teeth with consistently inflamed gingivae yielded a 50-year survival rate of 63.4%.
Conclusion:
Based on this longitudinal study on the natural history of periodontitis in a dentally well-maintained male population it can be concluded that persistent gingivitis represents a risk factor for periodontal attachment loss and for tooth loss.
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