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Oral bacteria promote systemic diseases – Heilpraxis



Does brushing your teeth protect against systemic diseases?

Various bacteria, especially when severe infections in the mouth occur seem the risk for systemic diseases increase and also negatively influence the course of these diseases.

In a new study involving experts from Karolinska Institute a comprehensive analysis of microbial diversity in samples of oral infections was performed. In this way, the oral microbiota could be determined which can influence systemic diseases. The results were published in the journal “Microbiological spectrum“published.

Link between bacteria and oral infections

The researchers analyzed globally 1,014 samples of 469 women and 545 men. Bacteria have been identified, which are most common in serious mouth infections appear.

The samples came from people with severe oral infections and were collected at Karolinska University Hospital in Sweden between 2010 and 2020.

Here we report for the first time the microbial composition of bacterial infections from samples collected over a ten-year period in Stockholm County.‘ said the author of the study Professor Margaret Sällberg Chen in a Press release.

Systemic diseases caused by oral bacteria

Various previous research projects have already established that there are links between oral health and diseases such as cancer, cardiovascular disease, diabetes and Alzheimer’s disease, the team explains.

The current study now shows, “that several bacterial infections related to systemic diseases are constantly present and some of them even in Stockholm during the last ten years increased“, like that Professor Sällberg Chen.

In the samples taken were the most common bacterial strains called Firmicutes, Bacteroidetes, Proteobacteria and Actinobacteria. The most common bacterial genera were Streptococcus spp, Prevotella spp and Staphylococcus spp.

According to the researchers, there was a trend increase in Streptococcus anginosus, Streptococcus mitis, Streptococcus sanguinis, Eikenella corrodens, Actinomyces spp., Aggregatibacter aphrophilus, Staphylococcus epidermidis, Granulicatella adiacens, Enterococcus faecalis and Klebsiella spp. determine.

Underlying diseases caused by dental infections

New findings provide insight into the diversity and prevalence of harmful bacteria oral infections and it is becoming clear what role bacterial infections in the mouth can play in systemic disease.

According to Professor Sällberg Chen, it is very likely that bacteria that are in the mouth and cause damage there also damage the tissues of the mouth. others Damage parts of the body as the infection spreads.

However, this was a single-center epidemiological study, so further larger studies are needed to verify the results, adds the study author. Ozenci Volcano.

Özenci also hopes to better understand the bacteria that cause oral infections. According to the researchers, diagnosis and therapeutic management could benefit from the results.(as)

Author and source information

This text corresponds to the specifications of the specialized medical literature, medical guidelines and current studies and has been verified by health professionals.


  • Khaled Al-Manei, Mahin Ghorbani, Sabrina Naud, Kholod Khalil Al-Manei, Michał J. Sobkowiak, et al. : Clinical Microbial Identification of Serious Oral Infections by MALDI-TOF Mass Spectrometry in Stockholm County: An 11-Year Period (2010 to 2020) Epidemiological Survey; in: Microbiology Spectrum (published 2022-11-24), Microbiological spectrum
  • Karolinska Institutet: Study sheds new light on link between oral bacteria and disease (published 2022-11-24), Karolinska Institute

Important note:
This article contains general advice only and should not be used for self-diagnosis or treatment. It cannot substitute a visit to the doctor.

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