Sencha is a type of decoct Japanese green tea, most popular tea in Japan, made from the dried tea leaves without grinding the tea leaves. It volatile compounds could be used as markers for the overall quality evaluation of all green teas, according to the study of "Predication of Japanese green tea (Sen-cha) ranking by volatile profiling using gas chromatography mass spectrometry and multivariate analysis" by Jumtee K, Komura H, Bamba T, Fukusaki E..
12. periodontal health
a. In the evaluation of Streptococcus mutans count in saliva and plaque, Salivary and plaque pH values, etc. and rinsing with green te of the study of "A pilot study of the role of green tea use on oral health" by Awadalla HI, Ragab MH, Bassuoni MW, Fayed MT, Abbas MO,[12a], researchers found that the effectiveness of local application of green tea as antibacterial and anticariogenic material as it decreases the acidity of the saliva and plaque, so it is a cost-effective caries prevention measures especially in developing countries.
b. In the observation of green tea polyphenols and its inhibition of the growth and cellular adherence of periodontal pathogens of the study of "Relationship between intake of green tea and periodontal disease" by Kushiyama M, Shimazaki Y, Murakami M, Yamashita Y.[12b]. researchers found that there is a modest inverse association between the intake of green tea and periodontal disease
c. In the investigation of Epigallocatechin gallate (EGCG) and epicatechin gallate (ECG), the major catechins in green tea and its effect on human gingival fibroblasts of the study of "Catechins inhibit CCL20 production in IL-17A-stimulated human gingival fibroblasts" by Hosokawa Y, Hosokawa I, Ozaki K, Nakanishi T, Nakae H, Matsuo T.[12c], researchers wrote that these data provide a novel mechanism through which the green tea flavonoids catechins could be used to provide direct benefits in periodontal disease.
d. In the investigation of green tea flavonoids, catechins and thier effects on human gingival fibroblasts of the study of "Catechins inhibit CXCL10 production from oncostatin M-stimulated human gingival fibroblasts" by Hosokawa Y, Hosokawa I, Ozaki K, Nakanishi T, Nakae H, Matsuo T.[12d] researchers found that EGCG and ECG attenuated oncostatin M receptors (OSMR) beta expression on human gingival fibroblasts(HGFs).
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