Red or swollen gums
Gums that bleed when brushing or flossing
Tender or sensitive gums
Bad breath that does not go away
Gums that look puffy or shiny
Gums that feel sore or irritated
Receding gums
Teeth that look longer than usual
A bad taste in the mouth
Loose teeth in more advanced cases
Plaque buildup along the gumline
Tartar buildup near the gums
Pain when chewing in some cases