title: Clinical assessment of oral malodor by the electronic nose system.
abstract: A recently developed electronic nose has not yet been clinically applied to evaluations of oral malodor. This investigation sought to determine whether an electronic nose could clinically assess oral malodor. Twenty-nine healthy adults and 49 patients were assessed by results of an actual organoleptic test, a score representing malodor strength with an electronic nose in "top-note" mode (top-note score), and measurements of volatile sulfur compound (VSC) concentrations. The correlation coefficient between top-note and actual organoleptic scores (r = 0.71) was comparable with the log VSC and actual organoleptic scores (r = 0.63). However, the area under the receiver-operating characteristic plots for top-note score was significantly larger than that for log VSC. In logistic regression analyses with top-note score as a dependent variable, probing depth, tongue coating, and plaque control record each had independent associations. Our findings suggest that the top-note score from an electronic nose examination may be useful for the clinical evaluation of oral malodor.
authors.affiliation: Department of Preventive Dentistry, Graduate School of Dentistry, Osaka University, 1-8, Yamadaoka, Suita, Osaka 565-0871, Japan. tanakam@dent.osaka-u.ac.jp
authors.forename: M
authors.initials: M
authors.lastname: Tanaka
authors.forename: H
authors.initials: H
authors.lastname: Anguri
authors.forename: A
authors.initials: A
authors.lastname: Nonaka
authors.forename: K
authors.initials: K
authors.lastname: Kataoka
authors.forename: H
authors.initials: H
authors.lastname: Nagata
authors.forename: J
authors.initials: J
authors.lastname: Kita
authors.forename: S
authors.initials: S
authors.lastname: Shizukuishi
mesh_terms: D000328:Adult; D015374:Biosensing Techniques / Q000379:methods*; D004581:Electronics; D005069:Evaluation Studies as Topic; D005260:Female; D006209:Halitosis / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009909:Oral Health; D010512:Periodontal Index; D013457:Sulfur Compounds / Q000009:adverse effects / Q000032:analysis*
chemical_list: D013457:Sulfur Compounds