Gingivitis is a milder form of gum disease that can develop into periodontitis if left untreated. Tender and swollen gums are the telltale sign of gingivitis, and these symptoms can develop into periodontitis, causing:
Redness & soreness
Bleeding gums during and after brushing
Persistent bad breath
Loose or shifting teeth
Untreated periodontitis can eventually cause receding gum line, bone loss, infection, tooth decay, and severe pain.