title: Relationship of a turbidity of an oral rinse with oral health and malodor in Vietnamese patients.
abstract: OBJECTIVE
  In the present study, the relationship between the turbidity of mouth-rinse water and oral health conditions, including oral malodor, in patients with (n = 148) and without (n = 231) periodontitis was examined.
  
  
  METHODS
  The turbidity of 20 mL distilled water that the patients rinsed in their mouths 10 times was measured using a turbidimeter. Oral malodor was evaluated using an organoleptic test and Oral Chroma. Oral health conditions, including decayed teeth, periodontal status, oral hygiene status, proteolytic activity of the N-benzoyl-dl-arginine-2-napthilamide (BANA) test on the tongue coating, and salivary flow rate, were assessed.
  
  
  RESULTS
  Turbidity showed significant correlations with oral malodor and all oral health parameters in the periodontitis group. In the non-periodontitis group, turbidity showed significant correlations with oral malodor and oral health parameters, including dental plaque, tongue coating, BANA test, and salivary flow rate. The regression analysis indicated that turbidity was significantly associated with methyl mercaptan and the BANA test in the periodontitis group, and with hydrogen sulfide, dental plaque, tongue coating, and salivary flow rate in the non-periodontitis group.
  
  
  CONCLUSIONS
  The findings of the present study indicate that the turbidity of mouth-rinse water could be used as an indicator of oral health conditions, including oral malodor.
authors.affiliation: Department of Periodontology, Faculty of Odonto-Stomatology, University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam.
authors.forename: Thuy A V
authors.initials: TA
authors.lastname: Pham
mesh_terms: D000328:Adult; D001587:Benzoylarginine-2-Naphthylamide; D004245:DMF Index; D003774:Dental Plaque Index; D005260:Female; D006209:Halitosis / Q000378:metabolism*; D006801:Humans; D006862:Hydrogen Sulfide / Q000032:analysis; D008297:Male; D008875:Middle Aged; D009067:Mouthwashes / Q000737:chemistry*; D009391:Nephelometry and Turbidimetry; D009909:Oral Health; D009911:Oral Hygiene Index; D010512:Periodontal Index; D010518:Periodontitis / Q000378:metabolism; D012463:Saliva / Q000378:metabolism; D012636:Secretory Rate / Q000502:physiology; D012907:Smoking; D013438:Sulfhydryl Compounds / Q000032:analysis; D014059:Tongue / Q000473:pathology; D014744:Vietnam; D014867:Water / Q000737:chemistry*
chemical_list: D009067:Mouthwashes; D013438:Sulfhydryl Compounds; D014867:Water; C005231:methylmercaptan; D001587:Benzoylarginine-2-Naphthylamide; D006862:Hydrogen Sulfide
keywords: bacteria; oral health status; oral malodor; periodontitis; turbidity