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Influence of resin monomers on growth of oral streptococci
- Source :
- Journal of dental research. 83(4)
- Publication Year :
- 2004
-
Abstract
- Ethyleneglycol dimethacrylate monomers have been previously reported to stimulate the growth of certain caries-associated bacteria on the basis of turbidity measurements. To elucidate the detail of this effect, we examined the influence of resin monomers on the growth of Streptococcus sobrinus and Streptococcus sanguis by determination of bacterial numbers (colony-forming units), morphological observation, and chemical analysis. Although the absorbance values in the stationary phase of bacterial suspension were increased in the presence of ethyleneglycol monomers, no significant differences were observed for bacterial numbers throughout the incubation period. Scanning electron microscopy observation revealed the formation of sparse vesicular material surrounding bacterial cells when incubated with ethyleneglycol monomers, and these products were proved to be resin polymers. The results demonstrate that the apparent biomass increase during incubation with ethyleneglycol monomers is due not to promotion of bacterial multiplication, but to the polymerization of resin monomers to form vesicular structures attached to cells.
- Subjects :
- 0301 basic medicine
Polyurethanes
Colony Count, Microbial
Bacterial growth
Composite Resins
Streptococcus sobrinus
Polyethylene Glycols
Absorbance
03 medical and health sciences
chemistry.chemical_compound
0302 clinical medicine
Polymethacrylic Acids
Organic chemistry
Bisphenol A-Glycidyl Methacrylate
General Dentistry
Incubation
chemistry.chemical_classification
biology
Chemistry
030206 dentistry
Polymer
biology.organism_classification
Resin Cements
030104 developmental biology
Monomer
Polymerization
Acrylates
Biofilms
Methacrylates
Ethylene Glycols
Streptococcus sanguis
Bacteria
Nuclear chemistry
Subjects
Details
- ISSN :
- 00220345
- Volume :
- 83
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Journal of dental research
- Accession number :
- edsair.doi.dedup.....612b1e02a41211300e278092bb978964