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Effect of yoghurt with Bifidobacterium DN-173010 on salivary mutans streptococci and lactobacilli
Umeå University, Faculty of Medicine, Odontology, Pediatric Dentistry.
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2005 (English)In: Acta odontologica Scandinavica, Vol. 63, no 6, 317-320 p.Article in journal (Refereed) Published
Abstract [en]

Abstract. Probiotic bacteria are thought to reduce the risk of disease. Previous studies have suggested that lactobacilli-derived probiotics in dairy products may affect the oral ecology but the effect of bifidobacteria has not previously been reported. The aim of the present study was to examine whether or not a short-term consumption of yogurt containing bifidobacteria would affect the salivary levels of mutans streptococci and lactobacilli in young adults. A double blind, randomized crossover study was performed and 21 healthy subjects were followed over four periods. During period 2 and 4 (two weeks each), they ingested 200 g yogurt containing Bifidobacterium DN-173 010 once daily or a control yogurt without viable bacteria. Periods 1 and 3 were run-in and washout periods, respectively. Salivary mutans streptococci and lactobacilli were enumerated with chair-side kits. A statistically significant reduction (p<0.05) of salivary mutans streptococci was recorded after the probiotic yogurt consumption, which was in contrast to the controls. A similar trend was seen for lactobacilli but this decrease failed to reach statistical significance. In conclusion, probiotic bifidobacteria in yogurt may reduce the levels of selected caries-associated microorganisms in saliva.

Place, publisher, year, edition, pages
2005. Vol. 63, no 6, 317-320 p.
National Category
Dentistry
Identifiers
URN: urn:nbn:se:umu:diva-13277PubMedID: 16512103OAI: oai:DiVA.org:umu-13277DiVA: diva2:152948
Available from: 2007-05-07 Created: 2007-05-07 Last updated: 2011-01-12Bibliographically approved

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