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Related Experiment Video

Updated: Jun 25, 2025

Oral Biofilm Sampling for Microbiome Analysis in Healthy Children
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Differences in maternal subgingival microbiome between preterm and term births: The MOHEPI study.

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  • 1Department of Periodontology, Korea University Anam Hospital, Seoul, Republic of Korea.

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|May 29, 2024
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Maternal gingival inflammation and oral microbiome composition differ between preterm birth (PTB) and full-term birth (FTB) groups. In cases of high inflammation, PTB mothers showed decreased oral microbiome dysbiosis compared to FTB mothers.

Keywords:
dysbiosisinflammationoral microbiomeperiodontitispreterm birth

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Area of Science:

  • Oral microbiology
  • Maternal health
  • Obstetrics

Background:

  • Periodontitis is a potential risk factor for preterm birth (PTB), but the exact mechanisms are unclear.
  • Understanding the oral microbiome's role in PTB is crucial for maternal and infant health.

Purpose of the Study:

  • To compare oral microbiome features between mothers who experienced PTB and those with full-term birth (FTB).
  • To investigate the association between periodontal health and PTB outcomes.

Main Methods:

  • Prospective enrollment of 60 women (30 PTB, 30 FTB).
  • Subgingival plaque samples analyzed via metagenomic 16S rDNA sequencing.
  • Clinical periodontal measurements and obstetric data collection.

Main Results:

  • Gingival inflammation (mGI score) was significantly associated with PTB.
  • Distinct microbial compositions were observed between PTB and FTB mothers, even with low inflammation.
  • In high inflammation groups, PTB mothers showed decreased oral microbiome dysbiosis compared to FTB mothers.

Conclusions:

  • Maternal subgingival microbiome composition differs between PTB and FTB mothers across inflammation levels.
  • High gingival inflammation in PTB mothers is linked to reduced oral microbiome dysbiosis compared to FTB mothers.