Figure 2.

The CaP bioceramic particles show three micropore clusters. (A) Elbow method to determine the number of clusters in the 5,338 micropores data set, the “elbow” marked with the red asterisk suggests that the number of micropore clusters is three. (B) Davies-Bouldin Index (DBI) calculated considering the five attributes of the 5,338 micropores isolated from the five bioceramic particles, for which the K-value obtained by the elbow method, together with its closest neighbors, was used as an approximation. The lowest value of the DBI indicates the number of suitable clusters, in this case three.