Microbiota in intra-oral halitosis – characteristics, effects of antibacterial mouth rinse treatment

Relevance. Modern data confirm multimicrobial etiology of oral malodor that can significantly compromise effective therapy. Thus, it is relevent to perform comprehensive study of causes of oral malodour, based on microbiological study of composition of mixed microbial biofilms including culturable and non-culturable microbes and evaluation of efficacy of mouth rinses with broad-spectrum antimicrobial agents.

Purpose. To study oral microbiota in oral malodor and its correction with antibacterial mouth rinses.

Materials and methods. Subjects, involved in the study, were divided into 3 groups, each having 20 people. Controls didn’t use mouth rinses; experimental group used mouth rinse, containing multicidum; in comparison group chlorhxidine containing mouth rinse was used. Orgnoleptic measurement based on 0-5 Rosenberg scale was applied to score intensity of oral malodor. Coating of the root of the tongue was studied by culture-based methods.

Results. The research showed that Multicidum^® mouth rinse in comprehensive oral malodor treatment affects aerobic bacteria involved in the pathologic process causing bad breath. Positive effect manifested itself organoleptically according to Rosenberg scale in foul breath reduction and in composition changes of microbiota of the root of the tongue. At thus, amount of microorganisms producing smelly volatile compounds decreased and the number of bacteria inhibiting this process increased amid reduction of spore-forming bacteria that contribute to maintenance of stable microbial communities in oral malodor.

Conclusion. Gram-positive cocci and Bacillus-Streptococcus, Enterobacter, Staphylococcus, Granulicatella adiacens, Rothia and aerobic spore-forming bacteria from the Bacillus family that are involved in maintaining the functions of resistant bacterial communities-predominated among the bacteria identified in patients with halitosis. There was a statistically significant decrease in the severity of halitosis under the action of a rinse aid, the main active substance of which is Multicidum , and the absence of a statistically significant effect when using a rinse aid based on chlorhexidine.

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