Hydroxylapatite Beads As an Experimental Model to Study the Adhesion of Lactic Acid Bacteria From the Oral Cavity to Hard Tissues

The oral environment contains many different types of microorganisms, including both Gram-negative and Gram-positive cocci, bacilli, and spirochetes. From the ecological point of view, the oral cavity is a perfect niche for certain bacteria such as lactobacilli (1 ) because they interact, forming different types of communities. Lactobacilli have been associated with the generation of caries in some reports, secondary to the cariogenic Streptococcus (2 ).