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Clinical Assessment of Oral Malodor by the Electronic Nose System

¹ Department of Preventive Dentistry, Graduate School of Dentistry, Osaka University, 1-8, Yamadaoka, Suita, Osaka 565-0871, Japan; and
² Analytical Instruments Division, Shimadzu Corporation;

View larger version (31K): [in a new window]   Figure 1. The mean concentrations of H2S, CH3SH, and CH3SCH3 were measured by gas chromatography and the plots compared with the mean of each finding (log Rpeak/Rbase) from the 6 electronic sensors (• sensor 1, sensor 2, sensor 3, sensor 4, sensor 5, sensor 6) (A), as well as mean VSC concentrations estimated with the electronic nose in top-note mode (B).

View larger version (12K): [in a new window]   Figure 2. Correlations between actual organoleptic scores and top-note scores with an electronic nose (A) and log VSC by gas chromatography (B). ROC plots comparing top-note scores and log VSC data used for classifying subjects with or without an actual organoleptic score of 2.0 (C).