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Microbial changes associated with the development of puberty gingivitis.

A Mombelli1, N P Lang, W B Bürgin

  • 1University of Bern, School of Dental Medicine, Switzerland.

Journal of Periodontal Research
|November 1, 1990
PubMed
Summary
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This study tracked changes in children's oral bacteria over four years, linking specific bacteria like Capnocytophaga to the start of puberty gingivitis and Bacteroides to its progression.

Area of Science:

  • Microbiology
  • Pediatric Dentistry
  • Periodontology

Background:

  • Puberty gingivitis is a common condition in adolescents.
  • Longitudinal studies on the subgingival microbiota changes during puberty are limited.

Purpose of the Study:

  • To investigate longitudinal changes in subgingival microbiota composition in children aged 11-14.
  • To associate these microbial shifts with clinical parameters of gingival health, specifically the Papillary Bleeding Index (PBI).

Main Methods:

  • Collected subgingival microbial samples from 42 children (22 boys, 20 girls) 10 times over 4 years.
  • Recorded gingival bleeding tendency using the Papillary Bleeding Index (PBI).
  • Analyzed 840 samples using darkfield microscopy and anaerobic culturing.

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Main Results:

  • Children with sustained high PBI scores showed increased spirochetes, Eikenella corrodens, and Actinomyces viscosus.
  • Capnocytophaga sp. were elevated immediately before a rise in PBI.
  • Black-pigmented Bacteroides, particularly B. intermedius, increased after high bleeding tendency was established.

Conclusions:

  • Capnocytophaga sp. may initiate puberty gingivitis.
  • Increased Bacteroides presence likely reflects secondary environmental changes due to bleeding.
  • Understanding these microbial dynamics can inform targeted interventions for adolescent gingivitis.