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Clin Exp Dent Res

Title:		Inhibitory effect of Streptococcus salivarius K12 and M18 on halitosis in vitro
Author(s):		Yoo HJ; Jwa SK; Kim DH; Ji YJ;
Address:		"Department of Preventive Dentistry, Dankook University College of Dentistry, Republic of Korea. Department of Dental Hygiene, Ulsan College, Republic of Korea. Herbal Crop Utilization Research Team, Department of Herbal Crop Research, Rural Development Administration (RDA), Chungbuk, Republic of Korea"
Journal Title:		Clin Exp Dent Res
Year:		2020
Volume:		20191223
Issue:		2
Page Number:		207 - 214
DOI:		10.1002/cre2.269
ISSN/ISBN:		2057-4347 (Electronic) 2057-4347 (Linking)
Abstract:		"BACKGROUND: The aim of the study was to observe the antimicrobial activity of Porphyromonas gingivalis and Treponema denticola as well as the effect on reducing volatile sulfur compounds (VSCs). MATERIALS AND METHODS: After P. gingivalis and T. denticola were cultured with or without Streptococcus salivarius K12 and M18, VSCs were measured by Oral Chroma. In order to analyze the mechanism for malodor control, the antimicrobial activity of S. salivarius K12 and M18 against P. gingivalis and T. denticola was assessed. SPSS 21.0 was used for data analysis with the Kruskal-Wallis and Jonckheere-Terpstra tests. Mann-Whitney test was applied for post hoc analysis. RESULTS: P. gingivalis and T. denticola VSC levels were reduced by high concentrations of S. salivarius K12 and M18 during coculture. The concentrations were lower than those of single culture (p < .05). An antimicrobial effect was detected on P. gingivalis, and T. denticola by 50% S. salivarius K12 and M18. The spent culture medium and whole bacteria of S. salivarius K12 and M18 reduced the levels of VSCs below the amount in a single culture of P. gingivalis and T. denticola (p < .05). CONCLUSION: S. salivarius K12 and M18 decreased the levels of VSCs originating from P. gingivalis and T. denticola"
Keywords:		Anti-Bacterial Agents/metabolism/*pharmacology Bacteriocins/metabolism/pharmacology Bacteriological Techniques Coculture Techniques Culture Media/metabolism/pharmacology Halitosis/*diet therapy/microbiology Humans Porphyromonas gingivalis/drug effects/met;
Notes:		"MedlineYoo, Hyun-Jun Jwa, Su-Kyung Kim, Da-Hui Ji, Yun-Jeong eng 2020/04/07 Clin Exp Dent Res. 2020 Apr; 6(2):207-214. doi: 10.1002/cre2.269. Epub 2019 Dec 23"