Porphyromonas gingivalis lipopolysaccharide affinity for two casting alloys

Kent L. Knoernschild, Geoffrey R. Tompkins, Carol A. Lefebvre, George S. Schuster

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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 eluation 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.

Original languageEnglish (US)
Pages (from-to)33-38
Number of pages6
JournalThe Journal of Prosthetic Dentistry
Issue number1
StatePublished - Jul 1995

ASJC Scopus subject areas

  • Oral Surgery


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