What is a common characteristic of Fusobacterium?

• A. It is aerobic
• B. It is gram-positive
• C. It is often associated with periodontal disease
• D. It is a spore-forming bacterium

Answer: (C)

Fusobacterium is a genus of bacteria that is commonly found in the oral cavity and is known for its role in various infections. One of the most significant characteristics is its association with periodontal disease. These bacteria are part of the normal flora of the mouth but can become pathogenic, especially in the context of gingivitis and periodontitis.

In periodontal disease, Fusobacterium species, particularly Fusobacterium nucleatum, are often found in increased numbers and are thought to contribute to the inflammatory processes that characterize these conditions. Their presence helps facilitate the establishment of a biofilm and can promote the growth of other pathogenic bacteria, ultimately leading to tissue destruction.

Understanding this association is crucial for dental professionals, as it highlights the importance of maintaining oral hygiene to prevent the overgrowth of such bacteria and the subsequent development of periodontal disease.