Comparison of Bacterial Composition between Human Saliva and Dental Unit Water System
2007
Jeon, E.H. (Dankook University, Cheonan, Republic of Korea) | Han, J.H. (Dankook University, Cheonan, Republic of Korea) | Ahn, T.Y. (Dankook University, Cheonan, Republic of Korea), E-mail: [email protected]
The bacterial compositions between the dental unit water system and human saliva were characterized and compared by direct sequence analysis of 16S rDNA clone libraries. Based on the species richness estimation, bacterial diversity in the dental unit water system (DUW) was more diverse than that of the human saliva (HS). The Chao1 estimates of species richness in HS and DUW samples were 12.0 and 72.4, respectively. The total numbers of OTUs observed in the combined libraries accounted for 83% (HS) and 59% (DUW) of the Chao1 diversity estimate as defined at the 80% similarity threshold.
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