Research Article

Raman Spectroscopic Characterization of Endodontic Biofilm Matrices

Figure 3

Raman spectroscopic analyses of E. faecalis, A. naeslundii, and dual biofilms (a). A PCA-DFA plot of all the Raman spectra from the biofilm developed from E. faecalis (asterisk), A naeslundii (circle), and dual species (triangle). The value of cross-validation was 95.1%. Principal spectral differences can be seen in three main ranges (b).
(a)
(b)