common disease
by Vinutha[ Edit ] 2010-02-11 21:06:53
The most common disease is periodontal disease ,disease of the gum, bones, and/or connective tissue that support the teeth. An example of periodontal disease is gingivitis, the inflammation of the gums. Periodontal disease is not contagious. The most common contagious disease in the world is coryza, or the common cold.
