what are the signs of periodontal disease?
['Red, swollen or tender gums or other pain in your mouth.', 'Bleeding while brushing, flossing, or eating hard food.', 'Gums that are receding or pulling away from the teeth, causing the teeth to look longer than before.', 'Loose or separating teeth.', 'Pus between your gums and teeth.', 'Sores in your mouth.', 'Persistent bad breath.']