Did you know cavities aren’t the only threat to your smile? Gum disease is a leading cause of tooth loss. According to the Centers for Disease Control and Prevention, at least 50% of adults have gum disease. Thankfully, the infection is easy to treat without causing any long-term damage to your smile when caught in the earliest stage, called gingivitis. Without any treatment, it can be detrimental to your dental health, but the American Dental Association considers it contagious. Here’s what you need to know to restore your gum health.