Aim: To examine the associations between oral health status, the presence of N-benzoyl-DL-arginine-2-naphthylamide-positive bacteria, and oral malodor in periodontal patients.
Methods: A total of 137 periodontitis and 80 gingivitis patients were included in the study. Oral malodor was measured by an organoleptic test and the OralChroma. An oral examination was conducted, including the assessment of decayed teeth, periodontal status, and tongue coating. The presence of N-benzoyl-DL-arginine-2-naphthylamide-positive bacteria in the subgingiva, tongue coating, and saliva was evaluated by the N-benzoyl-DL-arginine-2-naphthylamide test.
Results: In the periodontitis group, oral malodor was significantly correlated with decayed teeth, periodontal parameters, and tongue coating. Among the N-benzoyl-DL-arginine-2-naphthylamide test parameters, the highest correlation of oral malodor was found with N-benzoyl-DL-arginine-2-naphthylamide subgingiva, followed by N-benzoyl-DL-arginine-2-naphthylamide tongue coating and N-benzoyl-DL-arginine-2-naphthylamide saliva. In the gingivitis group, oral malodor was significantly correlated with the plaque index, bleeding on probing, and tongue coating. Among the N-benzoyl-DL-arginine-2-naphthylamide test parameters, the highest correlation of oral malodor was found with N-benzoyl-DL-arginine-2-naphthylamide tongue coating, followed by N-benzoyl-DL-arginine-2-naphthylamide saliva and N-benzoyl-DL-arginine-2-naphthylamide subgingiva.
Conclusion: Dental plaque, bleeding on probing, tongue coating, and N-benzoyl-DL-arginine-2-naphthylamide-positive bacteria contribute to oral malodor, but with different degrees in periodontitis and gingivitis patients.
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