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Microbiome associated with denture malodour.
Journal of Breath Research 2018 January 18
In the past, our inability to cultivate most of the oral microorganisms has limited our view of this complex ecosystem. In the present study, we utilized next generation deep sequencing techniques to revisit the microbiome associated with denture malodour, a growing field with the rise in life expectancy. The study population comprised 26 full dentures patients (mean age 71 ± 6.4, 10 males, 16 females) who visited the Tel Aviv University dental geriatric clinic. Denture malodour was rated organoleptically by a single odour judge, and dentures scoring 2 and above were considered malodour positive. DNA was extracted from the swab samples and analysed using next generation deep sequencing 16 s rDNA technology. Taxa identified could be classified into nine phyla, 29 genera and 117 species. Malodour positive samples showed a higher abundance of the phyla Firmicutes and Fusobacteria and the genera Leptotrichia, Atopobium, Megasphaera, Oribacterium and Campylobacter. Microbiome analysis demonstrated higher bacterial diversity within the malodourous samples and a significant difference in the microbial profile within the two groups. Taken together these results suggest a difference between the microbial populations of malodourous and non-malodourous dentures both in composition and diversity.
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