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1. After onion juice gargle, in the experimental group A which brushed teeth, it showed lasting decreaseof oral malodor until 20 min since the experiment, and after 30 min, the degree of oral malodorstarted to increase again.2. After onion juice gargle, the result of the experimental group B which brushed teeth, using auxiliaryproducts such as garglin, chewing gum, intaking green tea with roasted rice & brushing a tongue, etc.was as follows. First, in case of the experimental group BG which used garglin, it showed continuousreduction of oral malodor until 30 min since the experiment. Second, Also, in case of chewing gum(experimental group BC), intaking green tea with roasted rice (experimental group BT) and brushinga tongue (experimental group BO), it showed the lasting reduction of oral malodor until 20 min, but,after 30 min, the degree of oral malodor began to increase again.3. After onion juice gargle, the result of the experimental group C which took only supplementaryproducts such as garglin, chewing gum, intaking green tea with roasted rice & brushing a tongue andso on, was as follows. First, in case of experimental group CG which used garglin, until 30 min haspassed since the experiment, it showed the lasting reduction of oral malodor as the same trend withthe experimental group BG. Second, in chewing gum (experimental group CC), intaking green teawith roasted rice (experimental group CT), and brushing a tongue (experimental group CO),continuous reduction of oral malodor was shown until 10 minutes has passed since the experiment,but, after 20 minutes, we could see the degree of oral malodor started to increase again.4. After onion juice gargle, in the experimental group D which only the degree of oral malodor wasmeasured with the passage of time, neither brushing teeth nor using auxiliary goods, until 30 minsince the experiment, it showed the similar trend of the reduction of oral malodor with otherexperimental groups, but, it showed high degree of oral malodor, as compared with otherexperimental groups A, B, and C.As considering all the experimental results about the effect of reduction of oral malodor, it indicatedthat the auxiliary goods for the reduction of oral malodor, especially using garglin had the continuouseffect of the reduction of oral malodor even after 30 min since the experiment. On the other hand,auxiliary goods like chewing gum, taking green tea, unpolished rice & brushing a tongue showed theeffect of the reduction of oral malodor only until 10 min has passed since the experiment.Through this experiment, it revealed that, due to improved quality of life recently, since the interest ofgeneral people in oral malodor is bing increased, in case of not being able to brush teeth inevitably,using auxiliary products like garglin is a useful way for the reduction of oral malodor.