Gum disease (the medical term is periodontal disease) is one of the most common dental conditions in adults and one of the most preventable. It develops gradually, usually painlessly in the early stages, and can progress to bone loss and tooth loss when left untreated. Understanding the stages, recognizing the warning signs, and intervening early are the most effective way to keep gums and the bone supporting the teeth healthy through life. This guide covers what gum disease is, the four stages of progression, the symptoms that warrant a dental visit, and the treatment options at each stage.
For active treatment options at our Gorham, ME practice, see our Gum Disease Treatment service page.
What Is Gum Disease?
Gum disease is an infection of the gum tissue and the bone that supports the teeth. It begins when bacteria in plaque (the soft film that builds up on teeth daily) trigger an inflammatory response in the gums. If plaque is not removed by brushing and flossing, it hardens into tartar (calculus), which can only be removed by a dental professional. Tartar buildup at and below the gum line drives the progression of gum disease.
The condition is highly responsive to early treatment but becomes progressively harder to reverse as it advances. Identifying gum disease in its early stages is the single most important factor in preserving long-term gum and bone health.
The Four Stages of Gum Disease
Stage 1: Gingivitis
Gingivitis is the earliest and only fully reversible stage of gum disease. The gums are red, may swell slightly, and bleed easily during brushing or flossing. There is no bone loss yet. Treatment at this stage is straightforward: improved daily oral hygiene plus a professional cleaning typically resolves gingivitis within weeks.
Stage 2: Early Periodontitis
Once gum disease progresses past gingivitis, the supporting bone begins to erode. Early periodontitis is characterized by deeper gum pockets (the space between the gum and the tooth), persistent bad breath, and continued bleeding during cleaning. Bone loss at this stage is generally still slight and can be halted with active treatment, though the bone that has been lost cannot be regained.
Stage 3: Moderate Periodontitis
Moderate periodontitis involves substantial bone loss, deeper pockets (typically 5 to 7 millimeters), and the beginning of tooth mobility. Patients may notice gums that are visibly receding, longer-looking teeth, and shifts in how the bite feels. Treatment at this stage usually involves scaling and root planing (a deep cleaning beneath the gum line) and may include locally applied antibiotics.
Stage 4: Advanced Periodontitis
Advanced periodontitis is the most severe stage. Pockets exceed 7 millimeters, teeth become loose, and chewing may be painful. Without intervention, teeth eventually fall out. Treatment can stabilize the condition but typically requires surgical intervention (gum flap surgery, bone grafting) and may include removal of teeth that cannot be saved.
Recognizing the Signs
The early symptoms of gum disease are easy to miss because they are often painless. Common signs include red or swollen gums, bleeding when brushing or flossing, persistent bad breath, gum recession (gums pulling away from the teeth), increased sensitivity at the gum line, and a change in the way teeth fit together when biting. Loose teeth or visible pus around the gum line indicate advanced disease and warrant prompt evaluation.
Routine dental visits include periodontal examination as a standard part of the checkup. The dentist or hygienist measures pocket depths around each tooth, which is the most reliable way to detect gum disease before symptoms become noticeable.
Treatment Options
Professional Cleaning and Improved Hygiene
For gingivitis, a routine professional cleaning combined with an improved daily routine resolves the condition in most cases. The cleaning removes the plaque and tartar that the patient cannot remove at home, and the improved daily routine prevents reaccumulation.
Scaling and Root Planing
Scaling and root planing is a deep cleaning procedure performed below the gum line. The hygienist or dentist removes tartar from the tooth roots and smooths the root surface to discourage reaccumulation. The procedure is typically done in two visits (one for each side of the mouth) under local anesthesia. It is the standard treatment for early to moderate periodontitis.
Antibiotic Treatment
Localized antibiotics applied directly into gum pockets can supplement scaling and root planing for stubborn cases. Oral antibiotics are sometimes prescribed for active infection, particularly when the gum disease is associated with systemic conditions like diabetes that complicate healing.
Surgical Treatment
Advanced periodontitis may require gum flap surgery, where the gums are temporarily lifted to allow thorough cleaning of the tooth roots and reduction of the pocket depth. Bone grafting can rebuild bone in areas where loss has been substantial. These procedures are typically performed by a periodontist and aim to stabilize the condition rather than fully restore the original gum and bone health.
Prevention and Long-Term Maintenance
Once gum disease has been treated, ongoing maintenance is essential to prevent recurrence. The patient is typically scheduled for periodontal maintenance cleanings every three to four months (rather than the standard six-month interval) for the first year or two after treatment. Daily oral hygiene practices include brushing twice daily, flossing or using interdental brushes daily, and using an antimicrobial mouthwash if recommended.
Smoking cessation, blood sugar control for diabetic patients, and stress management all support gum health. Several systemic conditions (diabetes, cardiovascular disease, certain autoimmune conditions) are linked to gum disease severity, and addressing those conditions improves periodontal outcomes.
Lead Expert Insight
Dr. Brett Morgan, DMD, founder of Morgan Dental Care in Gorham, ME, frames the importance of early action: “Gum disease is the most common cause of tooth loss in adults, and almost every case I see could have been prevented or stopped early with routine cleanings and consistent home care. Patients who keep their six-month visits and follow our home-care recommendations rarely progress past gingivitis. The cases that frighten me are the ones that come in at advanced stages because the patient avoided the dentist for years.”
When to See a Dentist
Patients should see a dentist promptly at the first sign of gum disease: bleeding when brushing or flossing, gum recession, persistent bad breath, or any change in the way teeth fit together. Patients who have been away from routine dental care for more than a year should schedule an examination as soon as possible because gum disease often progresses silently during gaps in care.
Schedule a consultation by calling (207) 839-2655 or through our website.