Oral health is reflective of your whole body health. Many consider their teeth to be something "other" than themselves. They don't understand that teeth are living organisms just like their skin cells or their organs. This misunderstanding leads them to make unhealthy choices that can negatively impact their oral health and lead to periodontitis. Periodontal disease, or gum disease, occurs when the tissues that make up your gums become infected. The consequences of gum disease can be severe. Here are a few symptoms of periodontitis that you should know.