Oral bacteria support systemic diseases – Heilpraxis

Does brushing teeth protect against systemic diseases?

Various bacteria, especially when they are serious mouth infection appear to be a risk for systemic diseases increase and also negatively affect the course of such diseases.

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

The link between bacteria and oral infections

The researchers analyzed overall 1,014 samples 469 women and 545 men. The bacteria that are most common in severe mouth infection discover.

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 shown that there are connections between the two oral health and diseases such as cancer, cardiovascular disease, diabetes and Alzheimer’s disease, the team explains.

A current study now shows, “that several bacterial infections associated with systemic diseases are constantly present and some of them even in Stockholm in the last ten years increased“, so Professor Sällberg Chen.

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

Ein Trendanstieg war laut den Forschenden bei Streptococcus anginosus, Streptococcus mitis, Streptococcus sanguinis, Eikenella corrodens, Actinomyces spp., Aggregatibacter aphrophilus, Staphylococcus epidermidis, Enterlebococcus adiacensund, Granulicatella acusdiacens establish

Basic diseases caused by dental infections

The new results provide insight into the diversity and prevalence of harmful bacteria oral infection and it is clear what role bacterial infections in the mouth can play in systemic disease.

According to Professor Sällberg Chen, it is very likely that the bacteria that are found in the mouth and cause damage there also damage the tissues in the mouth. other Damage to 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 Volkan Ozenci.

Özenci also hopes to better understand the bacteria that cause oral infections. According to the researchers, diagnosis and therapeutic management could benefit from these findings.

Author and source information

This text conforms to the specifications of the medical literature, medical recommendations and current studies and has been reviewed by medical experts.


  • Khaled Al-Manei, Mahin Ghorbani, Sabrina Naud, Kholod Khalil Al-Manei, Michał J. Sobkowiak et al.: Clinical microbial identification of severe oral infections by MALDI-TOF Mass Spectrometry in Stockholm County: 11-year (2010 to 2020) Epidemiological investigation; in: Microbiology Spectrum (veröffentlicht 24.11.2022), Microbiology Spectrum
  • Karolinska Institutet: Study sheds new light on link between oral bacteria and disease (veröffentlicht 24.11.2022), Karolinska Institutet

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

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