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Start Over Author "YUAN-XIN QIU" Journal journal of dental sciences
2 results on '"YUAN-XIN QIU"'

1. Co-operative effect of exogenous dextranase and sodium fluoride on multispecies biofilms

Author

Yuan-xin Qiu, Meng-ying Mao, Dan Jiang, Xiao Hong, Ying-ming Yang, and Tao Hu

Subjects
confocal laser scanning microscopy, dextranase, multispecies cariogenic biofilm, sodium fluoride, viability value, Dentistry, RK1-715
Abstract

Background/purpose: The co-operative effect of exogenous dextranase (Dex) and sodium fluoride (NaF) on Streptococcus mutans monospecies biofilms is impressive. Here we investigated the effects of the combination on a mature cariogenic multispecies biofilm and analyzed the potential mechanism. Materials and methods: A multispecies biofilm of S. mutans, Lactobacillus acidophilus, and Actinomyces viscosus was established in vitro. Dex and NaF were added separately or together. The effects of the agents on the biomass were measured. The exopolysaccharide production was determined with the scintillation counting method. The viability and morphology were evaluated using colony forming unit and confocal laser scanning microscopy, respectively. Results: In general, biofilms treated with Dex and a little concentration of NaF exhibited a lower biomass, exopolysaccharide production, and viability compared with the control group (P

Published
2016
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2. Co-operative effect of exogenous dextranase and sodium fluoride on multispecies biofilms

Author

Tao Hu, Mengying Mao, Yuan-xin Qiu, Dan Jiang, Xiao Hong, and Yingming Yang

Subjects
0301 basic medicine, 030106 microbiology, Microbiology, 03 medical and health sciences, chemistry.chemical_compound, viability value, 0302 clinical medicine, Lactobacillus acidophilus, Sodium fluoride, sodium fluoride, General Dentistry, Colony-forming unit, confocal laser scanning microscopy, Dextranase, biology, multispecies cariogenic biofilm, Multispecies biofilms, Chemistry, Dentistry(all), dextranase, Biofilm, 030206 dentistry, Penetration (firestop), biology.organism_classification, Streptococcus mutans, lcsh:RK1-715, lcsh:Dentistry, Original Article
Abstract

Background/purpose: The co-operative effect of exogenous dextranase (Dex) and sodium fluoride (NaF) on Streptococcus mutans monospecies biofilms is impressive. Here we investigated the effects of the combination on a mature cariogenic multispecies biofilm and analyzed the potential mechanism. Materials and methods: A multispecies biofilm of S. mutans, Lactobacillus acidophilus, and Actinomyces viscosus was established in vitro. Dex and NaF were added separately or together. The effects of the agents on the biomass were measured. The exopolysaccharide production was determined with the scintillation counting method. The viability and morphology were evaluated using colony forming unit and confocal laser scanning microscopy, respectively. Results: In general, biofilms treated with Dex and a little concentration of NaF exhibited a lower biomass, exopolysaccharide production, and viability compared with the control group (P

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