Salt water for Gum Disease treatment is possible. Salt can help cure various gum problems — for example, periodontal disease, gingivitis and many more that seek attention. Gum disease can lead to serious dental health if left untreated. Sadly, a sick mouth can also cause system-wide health problems. The good news is that there are things you can use to attempt to fix the gum disease on your own — for example, gargling salt water, which is addressed here, and others. However, if gum problems persist, visit a nearby dental professional for a check-up.