Oral malodor is a major periodontal complaint, but the best method for assessing the halitosis grade is still undefined. The primary objective of the study was to detect the halitosis grade in the exhaled breath using the three distinct techniques and to compare the readings with different clinical indices to find out the best method of halitosis grading. A total of 90 patients with chronic periodontitis having oral malodor were included in the study. The subjective assessment of the exhaled breath (halitosis grading) was done by three different methods; using a handheld portable Tanita FitScan sulfide monitor, by Halitox toxin assay, and by organoleptic (Sniff test) method. The findings were then compared with the clinical parameters of poor oral hygiene like plaque index (PI), gingival index (GI), gingival bleeding index (BI), and pocket depth (PD) to detect the best method of halitosis grading. The mean age of the patients included was 38.23 ± 8.83 (mean ± standard deviation) years. The median value of halitosis grading as obtained by Tanita FitScan was 3.0 (95% confidence interval as 2 and 4) which was then compared with clinical indices (PI, GI, BI, and PD) and the results were statistically significant (P < 0.05), whereas the other two techniques of halitosis grading gave insignificant results. The results confirmed that the halitosis grading done using Tanita FitScan sulfide monitor is more appropriate with respect to clinical indices when compared with the other two techniques.
