Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. One of the most widespread dental diseases worldwide, the gum disease is defined as inflammation of the gums and damage to the bone and tissues supporting the teeth in the jaws. According to medical literature, people are more likely to show first signs of gum disease in their 30s or 40s, men being more affected by the disease, than women. A new research led on patients with primary head and neck squamous cell carcinoma (HNSCC), has linked gum disease and human papillomavirus (HPV), with both oral and neck cancers. Learn more about gum disease, its prevention and treatment in this book.