A healthy mouth helps to maintain balanced metabolic profiles

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healthy mouth metabolic profiles
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Common oral infections, periodontal diseases and caries, are associated with inflammatory metabolic profiles related to an increased risk of cardiometabolic diseases, a new study by an international team of researchers suggests. Oral infections also predicted future adverse changes in metabolic profiles.

The association between oral infections and adverse metabolic profiles was observed in the Finnish Health 2000/2011 and Parogene study cohorts.

“The observation is novel, since there are only few studies connecting extensive metabolic measures with oral infections, and no earlier prospective studies exist,” Professor Pirkko Pussinen from the University of Eastern Finland said.

Published in the Journal of Dental Research, the study also involved researchers from the University of Helsinki, Karolinska Institutet and Medical University of Graz.

Progressed oral infections and inflammations—endodontic lesions and periodontitis—are known to be associated with an increased risk of cardiometabolic diseases. Although the mechanisms behind these associations are partially unclear, poor oral health is probably sustaining systemic inflammation.

The present study comprised 452 middle-aged and elderly Parogene patients and 6229 participants of the population-based Health-2000 survey. 

In 2011, 4116 Health-2000 participants provided a follow-up serum sample. 

Parameters describing the oral health status were collected at baseline in clinical and radiographic examinations. 

The study composed of a cross-sectional part analysing the association between the metabolic measures with prevalent oral health, and of a prospective part examining whether oral infections predict the levels of metabolic measures in the follow-up.

Among 157 metabolic measures, increased periodontal probing depth associated with 93, bleeding on probing with 88, and periodontal inflammation burden with 77 measures. 

Among the caries-related parameters, root canal fillings were associated with 47, inadequate root canal fillings with 27, and caries lesions with eight metabolic measures. 

In the prospective analyses, caries was associated with 30 and bleeding on probing with 8 metabolites. 

These metabolic measures were typical of inflammation, thus showing positive associations with fatty acid saturation degree and very low-density lipoprotein (VLDL) parameters, and negative associations with high density lipoprotein (HDL) parameters.

“Oral infections may partially explain unhealthy lipid profiles,” Adjunct Professor Aino Salminen from the University of Helsinki said.

Adjunct Professor Kåre Buhlin from Karolinska Institutet concluded: “Oral infections represent a significant risk factor for systemic health. Importantly, they are modifiable through early prevention and treatment.”

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