TODENTJ-25-03-2019_TODENTJ-9-125 1553505653 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 3 31 2015 9 1 Tingxi Wu Xuesong He Hongyang Lu David J Bradshaw Alyson Axe Zvi Loewy Honghu Liu Wenyuan Shi Renate Lux Objective : Since dentures can serve as a reservoir for halitosis-causing oral bacteria, halitosis development is a concern for denture wearers. In this study, we surveyed the prevalence of four selected halitosis-related species (Fusobacterium nucleatum, Tannerella forsythia, Veillonella atypica and Klebsiella pneumoniae) in clinical denture plaque samples, and developed denture biofilm models for these species in vitro to facilitate assessment of antimicrobial treatment efficacy. Design : Denture plaque from ten healthy and ten denture stomatitis patients was screened for the presence of aforementioned four species by PCR. Biofilm formation by these halitosis-associated species on the surfaces of denture base resin (DBR) discs was evaluated by crystal violet staining and confocal laser scanning microscopy. The efficacy of denture cleanser treatment on these mono-species biofilms was evaluated by colony counting. Results : 80% of the subjects in the denture stomatitis group and 60% in the healthy group contained at least one of the targeted halitosis-related species in their denture plaque. All halitosis species tested were able to form biofilms on DBR disc surfaces to varying degrees. These in vitro mono-species resin biofilm models were used to evaluate the efficacy of denture cleansers, which exhibited differential efficacies. When forming biofilms on resin surfaces, the halitosis-related species displayed enhanced resistance to denture cleansers compared with their planktonic counterparts. Conclusion : The four selected halitosis-related bacterial species examined in this study are present on the majority of dentures. The mono-species biofilm models established on DBR discs for these species are an efficient screening tool for dental product evaluation. 3 31 2015 125 131 TODENTJ-9-125 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2015-1-2 2015-1-26 2015-2-24 2015-3-31 http://creativecommons.org/licenses/by-nc/3.0/ 10.2174/1874210601509010125 1553505653 https://opendentistryjournal.com/VOLUME/9/PAGE/125/ https://opendentistryjournal.com/contents/volumes/V9/TODENTJ-9-125/TODENTJ-9-125.pdf https://opendentistryjournal.com/contents/volumes/V9/TODENTJ-9-125/TODENTJ-9-125.pdf https://opendentistryjournal.com/contents/volumes/V9/TODENTJ-9-125/TODENTJ-9-125.pdf https://opendentistryjournal.com/contents/volumes/V9/TODENTJ-9-125/TODENTJ-9-125.pdf https://opendentistryjournal.com/contents/volumes/V9/TODENTJ-9-125/TODENTJ-9-125.pdf https://opendentistryjournal.com/contents/volumes/V9/TODENTJ-9-125/TODENTJ-9-125.pdf https://opendentistryjournal.com/contents/volumes/V9/TODENTJ-9-125/TODENTJ-9-125.pdf https://opendentistryjournal.com/contents/volumes/V9/TODENTJ-9-125/TODENTJ-9-125.xml Braz Oral Res. 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