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The role of oral dysbiosis in pregnancy complications: a systematic review and meta-analysis of preterm birth.

J Oral Microbiol · 2026 · PMC12829410 · PMID 41583075

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Importantly, although the meta-analysis of alpha diversity (Shannon index) did not reach statistical significance, the observed trend toward altered diversity in complicated pregnancies supports a potential association between oral microbial imbalance and adverse outcomes.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.