The following are signs of periodontal (gum) disease, and you should contact your dentist if you experience any of these:
Gums that bleed while brushing
Red, swollen or tender gums
Gums that have pulled away from the teeth
Bad breath that doesn’t go away
Pus between your teeth and gums
Loose teeth
A change in the way your teeth fit together when you bite
A change in the fit of partial dentures