Fig. 2.
a–e Viability counts as measured by colony-forming units (CFU) of bacteria adherent on machined and polished abutments (a, b), in soft tissues (c), and on paper-points (d) retrieved at 3 months. a CFU per abutment (n = 7 machined; and n = 5 polished). b CFU from abutments normalised by the surface area of the microstructure (Sdr) of the abutment; CFU/mm2 (n = 7 machined; and n = 5 polished). c CFU per tissue biopsy (n = 12). d CFU per paper-point (n = 12). e Viable counts (CFU/sample type) of aerobic and anaerobic bacteria as well as the aerobic bacterial species (staphylococci, enterococci, Escherichia coli, and Pseudomonas aeruginosa) at baseline (n = 12), 3 months (n = 12), and 12 months (n = 9 biopsies, n = 9 paper-points and n = 4 abutments). Data represent mean ± SEM. Bars that share the same letters are significantly different p < 0.05