Periodontitis is a multifactorial disease. Even though specific infectious agents are of key importance in the development of periodontitis, it is unlikely that a single agent or even a small group of pathogens are the sole cause or modulator of this heterogeneous disease. Due to the episodic nature of periodontal disease, viruses play an important role in etiology. The present review focusses on the role of viruses in periodontal diseases. |