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Initial Subgingival Colonization of ‘Pristine’ Pockets

¹ Department of Periodontology,
² Research Group for Microbial Adhesion, School of Dentistry, Oral Pathology and Maxillo-Facial Surgery, Faculty of Medicine, Catholic University of Leuven, Kapucijnenvoer 7, B-3000 Leuven, Belgium; and
³ Department of Periodontology, The Forsyth Institute, Boston, MA, USA;

View larger version (18K): [in a new window]   Figure 1. Detection frequency for members of the red and orange complex and A. actinomycetemcomitans in samples (n = 16) from implants (I) with shallow and medium pockets, respectively, taken at 1 and 2 wks post-abutment connection. The mean detection frequency, averaged over both visits, for samples of teeth (T) with shallow and moderate pockets is presented for comparison. The y-axis indicates the number of sampled sites positive for each species. The x-axis presents the different species, grouped per complex (colored bars), as described by Socransky and co-workers (1998). Abbreviations: F. nucleatum ss nucleatum (F.n.n.), F. nucleatum ss polymorphum (F.n.p.), F. nucleatum ss vincentii (F.n.v.), P. micros (P.m.), P. intermedia, (P.i.), T. forsythensis (T.f.), P. gingivalis (P.g.), T. denticola (T.d.), and A. actinomycetemcomitans (A.a.).

View larger version (38K): [in a new window]   Figure 2. Microbial profiles of the mean counts (x105) of 40 microbial taxa in subgingival plaque samples taken from the 4 sample types (teeth or implants, shallow or moderate pockets) at 1, 2, and 4 wks after abutment connection. The profiles represent the mean counts derived by averaging the counts of each species across subjects for each site type and each time-point. The species have been ordered according to the complexes described by Socransky and co-workers (1998). Significance of differences among sample types was tested by the Kruskal-Wallis test and adjusted for multiple comparisons (Socransky et al., 1991); *p < 0.05, **p < 0.01, ***p < 0.001.