Breath Odors by Nir Sterer & Mel Rosenberg

Author:Nir Sterer & Mel Rosenberg
Language: eng
Format: epub
ISBN: 9783030447311
Publisher: Springer International Publishing

8.1 Odor Judge Scoring

Environmental odor nuisances are generally judged by various criteria collectively known as the FIDO factors (Mackie et al. 1998). These include frequency (number of odor occurrences in a given time), intensity (strength of odor), duration (period of time for odor occurrence), and offensiveness (unpleasantness or character of odor). However, in the case of breath odors, odor intensity scales are considered the main tool for odor quantification both for research and clinical proposes. On some occasions (e.g., breath fresheners testing) hedonic scales measuring offensiveness/pleasantness characteristics may also be employed.

Due to the importance attributed to odor intensity in the determination of an odor problem, various odor intensity rating methods have been developed. These can be divided into two categories: scaling and dilution. Scaling involves grading the intensity of the malodor using a scale ranging from “no odor” to “extremely strong odor” either dichotomously (present or absent) or with intermittent-level criteria (e.g., “faint,” “moderate” ext.) on a typical 4-, 5-, or 6-point scale. Dilution methods are based on mixing the sample with odor free air in various concentrations in order to determine detectability or odor threshold concentration.

The most widely used odor intensity organoleptic scale in breath odor research is a 6-point scale (Table 8.1) also known as the “0–5 scale,” and sometimes erroneously referred to as the “Rosenberg scale” (Rosenberg and McCulloch 1992), since it was first introduced by Allison and Katz (1919).Table 8.1Breath odor intensity scale (organoleptic scale)

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