ABSTRACT
The normal oral flora consists of populations of different bacteria. A shift in the populations of bacteria can start the pathological process leading to gingivitis and periodontitis.16
In the brachydont, the normal flora of Grampositive cocci and rods colonize the surface of the tooth. Their populations are significantly higher than other bacteria such as Gram-negative anaerobic rods and spirochetes. In 1979 Baker characterized the species cultured from normal equine tooth surfaces (Table 15).17
