title: Porphyromonas gingivalis lipopolysaccharide affinity for two casting alloys.
abstract: With the exception of plaque, the affinity of biologically active bacterial products for restorative materials and the influence of that affinity on periodontal health has not been detailed. This study recognized that Porphyromonas gingivalis endotoxin, which is cell envelope lipopolysaccharide (LPS) produced by a bacterium that is common to the crevicular microbial flora, has an affinity for dental casting alloys. Regardless of surface finish, no difference in LPS initial adherence or elution was recorded between a type III gold or nickel-chromium-beryllium alloy (p > 0.05), but LPS readily adhered and remained attached to both alloys. LPS affinity could contribute to periodontal inflammation in tissues that approximate restorations fabricated from either alloy.
authors.affiliation: Department of Oral Rehabilitation, School of Dentistry, Medical College of Georgia, Augusta, USA.
authors.forename: K L
authors.initials: KL
authors.lastname: Knoernschild
authors.forename: G R
authors.initials: GR
authors.lastname: Tompkins
authors.forename: C A
authors.initials: CA
authors.lastname: Lefebvre
authors.forename: G S
authors.initials: GS
authors.lastname: Schuster
mesh_terms: D001422:Bacterial Adhesion; D002858:Chromium Alloys / Q000737:chemistry*; D003734:Dental Casting Investment / Q000737:chemistry*; D004731:Endotoxins / Q000737:chemistry; D005881:Gingiva / Q000382:microbiology; D006047:Gold Alloys / Q000737:chemistry*; D006801:Humans; D008070:Lipopolysaccharides / Q000737:chemistry*; D016966:Porphyromonas gingivalis; D013499:Surface Properties; D013997:Time Factors
chemical_list: D002858:Chromium Alloys; D003734:Dental Casting Investment; D004731:Endotoxins; D006047:Gold Alloys; D008070:Lipopolysaccharides