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BMC Oral Health
Published in: BMC Oral Health 1/2011

Open Access 01-12-2011 | Technical advance

A new portable monitor for measuring odorous compounds in oral, exhaled and nasal air

Authors: Naofumi Tamaki, Kenta Kasuyama, Mitsue Esaki, Takara Toshikawa, Shun-Ichi Honda, Daisuke Ekuni, Takaaki Tomofuji, Manabu Morita

Published in: BMC Oral Health | Issue 1/2011

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Abstract

Background

The B/B Checker®, a new portable device for detecting odorous compounds in oral, exhaled, and nasal air, is now available. As a single unit, this device is capable of detecting several kinds of gases mixed with volatile sulfur compounds (VSC) in addition to other odorous gasses. The purpose of the present study was to evaluate the effectiveness of the B/B Checker® for detecting the malodor level of oral, exhaled, and nasal air.

Methods

A total of 30 healthy, non-smoking volunteers (16 males and 14 females) participated in this study. The malodor levels in oral, exhaled, and nasal air were measured using the B/B Checker® and by organoleptic test (OT) scores. The VSCs in each air were also measured by gas chromatography (GC). Associations among B/B Checker® measurements, OT scores and VSC levels were analyzed using Spearman correlation coefficients. In order to determine the appropriate B/B Checker® level for screening subjects with malodor, sensitivity and specificity were calculated using OT scores as an identifier for diagnosing oral malodor.

Results

In oral and nasal air, the total VSC levels measured by GC significantly correlated to that measured by the B/B Checker®. Significant correlation was observed between the results of OT scores and the B/B Checker® measurements in oral (r = 0.892, p < 0.001), exhaled (r = 0.748, p < 0.001) and nasal air (r = 0.534, p < 0.001). The correlation between the OT scores and VSC levels was significant only for oral air (r = 0.790, p < 0.001) and nasal air (r = 0.431, p = 0.002); not for exhaled air (r = 0.310, p = 0.096). When the screening level of the B/B Checker® was set to 50.0 for oral air, the sensitivity and specificity were 1.00 and 0.90, respectively. On the other hand, the screening level of the B/B Checker® was set to 60.0 for exhaled air, the sensitivity and specificity were 0.82 and 1.00, respectively.

Conclusion

The B/B Checker® is useful for objective evaluation of malodor in oral, exhaled and nasal air and for screening subjects with halitosis.

Trial registration

ClinicalTrials.gov: NCT01139073
Appendix
Available only for authorised users
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Metadata
Title
A new portable monitor for measuring odorous compounds in oral, exhaled and nasal air
Authors
Naofumi Tamaki
Kenta Kasuyama
Mitsue Esaki
Takara Toshikawa
Shun-Ichi Honda
Daisuke Ekuni
Takaaki Tomofuji
Manabu Morita
Publication date
01-12-2011
Publisher
BioMed Central
Published in
BMC Oral Health / Issue 1/2011
Electronic ISSN: 1472-6831
DOI
https://doi.org/10.1186/1472-6831-11-15

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