Periodontal disease is often silent, meaning that patients often do not experience symptoms until the condition has already progressed. Some patients never feel any symptoms at all — making it all the more important for patients to make regular visits to the periodontist. Common signs of periodontal disease, however, involve changes in bite, deep pockets between the teeth and gums, gums that bleed during and after brushing teeth, loose or shifting teeth, persistent bad teeth or taste in the mouth, receding gums, and red, swollen, or tender gums.