title: Streptococcal adherence to uncoated and saliva-coated restoratives.
abstract: The adherence of Streptococcus sanguis and S. mutans to seven restoratives in the presence and absence of an artificial salivary pellicle has been investigated. The physiochemical surface characteristics of the bacteria and of the restoratives were also measured, together with the effect of salivary coating of restoratives. Zeta potential of uncoated restoratives showed a positive correlation with the number of adherent S. mutans cells and S. sanguis cells. S. sanguis showed a positive correlation with the hydrophobicity of uncoated restoratives. The surface hydrophobicity was decreased upon saliva coating, whereas the zeta potential was slightly increased. The contact angles or zeta potentials of saliva-coated restoratives were positively correlated with those of uncoated restoratives. The number of adherent cells of both S. sanguis and S. mutans to saliva-coated restoratives were decreased after the coating. Zeta potential of saliva-coated restoratives showed a positive correlation with the numbers of adherent S. mutans cells, suggesting that non-specific electrostatic interactions have an important role in the adherence of this species.
authors.affiliation: Department of Operative Dentistry, School of Dentistry, Hiroshima University, Japan.
authors.forename: J
authors.initials: J
authors.lastname: Satou
authors.forename: A
authors.initials: A
authors.lastname: Fukunaga
authors.forename: A
authors.initials: A
authors.lastname: Morikawa
authors.forename: I
authors.initials: I
authors.lastname: Matsumae
authors.forename: N
authors.initials: N
authors.lastname: Satou
authors.forename: H
authors.initials: H
authors.lastname: Shintani
mesh_terms: D001422:Bacterial Adhesion; D017438:Bisphenol A-Glycidyl Methacrylate; D003188:Composite Resins / Q000737:chemistry; D003722:Dental Alloys / Q000737:chemistry; D003723:Dental Amalgam / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry*; D044622:Dental Pellicle; D003793:Dental Restoration, Permanent; D004563:Electrochemistry; D006047:Gold Alloys / Q000737:chemistry; D006801:Humans; D008689:Methacrylates / Q000737:chemistry; D012463:Saliva / Q000502:physiology*; D013295:Streptococcus mutans / Q000145:classification / Q000502:physiology*; D013298:Streptococcus sanguis / Q000145:classification / Q000502:physiology*; D013499:Surface Properties; D014867:Water
chemical_list: D003188:Composite Resins; D003722:Dental Alloys; D003764:Dental Materials; D006047:Gold Alloys; D008689:Methacrylates; D014867:Water; D017438:Bisphenol A-Glycidyl Methacrylate; D003723:Dental Amalgam