This study aimed to quantify Porphyromonas gingivalis (Pg) in subgingival plaque of periodontitis (P) and periodontally healthy (H) subjects in the elderly. Subsequently, fimA genotypes were determined, and compared between P and H sites in the same subjects. The proportion of Pg was higher in P than in H. The fimA genotypes of P were identified mainly as II and Ib, while those of H were as I-IV. In four out of five subjects in whom Pg was detected in H sites, the fimA genotype was identical between P and H sites, but the proportion of Pg was significantly higher in P sites than in H sites (P < 0.05). This study suggests that the increase of Pg and the specific fimA genotypes are associated with P in the elderly, and that Pg possibly transmits within the oral cavity.
CITATION STYLE
Abiko, Y., Sato, T., Sakashita, R., & Takahashi, N. (2012). Subgingival plaque biofilm microflora of elderly subjects. In Interface Oral Health Science 2011 (pp. 176–177). Springer Japan. https://doi.org/10.1007/978-4-431-54070-0_46
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