What Healthy Gums Look Like
Before describing the stages of gum disease, it helps to know what healthy gums look like. Healthy gums are the baseline that each disease stage departs from.
Healthy gums are a consistent pale pink or coral color. In people with darker skin tones, healthy gums may appear darker pink, brown, or have areas of natural pigmentation. The gum tissue is firm, not puffy or swollen. It fits tightly around each tooth like a collar, with small pointed peaks of tissue (called papillae) filling the spaces between teeth.
Healthy gums do not bleed when you brush or floss. The sulcus, the small groove where the gum meets the tooth, measures 1 to 3 millimeters deep when probed by a dentist. X-rays show bone that comes up close to the neck of each tooth with no visible loss.
Stage 1: Gingivitis
Gingivitis is the earliest stage of gum disease. It affects only the gum tissue, not the bone underneath. This is the only stage that is fully reversible.
What Gingivitis Looks Like
Gums appear red or darker pink along the gum line, especially between the teeth. The tissue looks slightly swollen or puffy compared to the firm, tight appearance of healthy gums. The pointed papillae between teeth may become rounded or blunted.
Gums bleed easily during brushing, flossing, or when probed by a dentist. You may notice pink on your toothbrush or when you spit after brushing. Some people also experience mild bad breath.
Clinical Measurements
Pocket depths at this stage measure 3 to 4 millimeters. There may be bleeding on probing at multiple sites. X-rays show no bone loss. This is a key distinction: gingivitis involves inflammation of the soft tissue only. Once bone loss appears on X-rays, the disease has progressed to periodontitis.
Treatment at This Stage
Professional dental cleaning to remove plaque and tartar (calculus) from above and below the gum line. Improved daily brushing and flossing. Gingivitis typically resolves within 2 to 4 weeks with consistent care. No surgery is needed.
Stage 2: Early Periodontitis
Early periodontitis marks the transition from reversible gum inflammation to irreversible damage. Bacteria have moved deeper below the gum line, and the bone that supports the teeth has started to break down.
What Early Periodontitis Looks Like
The gums may look similar to gingivitis, with redness and swelling along the gum line. You may notice that the gums have started to pull away from the teeth slightly, creating a visible gap or pocket. The tissue between the teeth may appear less defined.
Bleeding during brushing and flossing continues or becomes more frequent. Bad breath may persist even with regular oral hygiene. You are unlikely to feel pain at this stage, which is why many people do not realize the disease has progressed.
Clinical Measurements
Pocket depths measure 4 to 5 millimeters. X-rays reveal early bone loss, typically a loss of up to 15-20% of the bone around affected teeth. The bone loss pattern may be horizontal (even along the jaw) or vertical (deeper around specific teeth). A periodontist or dentist measures these changes during a comprehensive periodontal exam.
Treatment at This Stage
Scaling and root planing (deep cleaning) is the standard treatment. This non-surgical procedure removes tartar and bacteria from the root surfaces below the gum line and smooths the roots to help the gums reattach. Treatment is typically done in two visits, one side of the mouth at a time, under local anesthesia.
Stage 3: Moderate Periodontitis
At this stage, the infection has caused significant bone loss, and the supporting structures of the teeth are noticeably compromised.
What Moderate Periodontitis Looks Like
The gums appear red, swollen, and may have a spongy texture. Gum recession becomes visible: the teeth look longer because the gum has pulled back, exposing more of the tooth root. You may see dark triangles forming between the teeth where the papillae have shrunk.
Bleeding occurs readily during brushing, flossing, and sometimes while eating. Pus may be visible between the teeth and gums when pressure is applied. Bad breath becomes persistent and harder to control with brushing alone. Some teeth may feel slightly loose or shift position.
Clinical Measurements
Pocket depths measure 6 to 7 millimeters. X-rays show bone loss of 20-50% around affected teeth. Deep vertical bone defects may be visible around specific teeth. Tooth mobility may be detectable, classified as Class I (slightly more movement than normal) to Class II (visible movement of about 1 millimeter).
Treatment at This Stage
Scaling and root planing may still be attempted first, but moderate cases often require surgical intervention. Flap surgery (pocket reduction surgery) involves lifting the gum tissue to access and clean deep pockets, then repositioning the tissue closer to the bone. Bone grafting may be used to regenerate lost bone in certain defects. A periodontist is the specialist best equipped to perform these procedures.
Stage 4: Severe (Advanced) Periodontitis
Severe periodontitis represents extensive destruction of the bone and tissues that hold teeth in place. Without treatment, tooth loss becomes likely.
What Advanced Periodontitis Looks Like
The gums are deeply red or purplish and may bleed spontaneously without any brushing or contact. Gum recession is pronounced, and roots of the teeth are visibly exposed. Teeth may have shifted out of alignment. You may notice gaps opening between teeth that were previously tight together.
Teeth feel noticeably loose. You may be able to move them with your tongue or finger. Chewing hard or crunchy food becomes uncomfortable or painful. Pus discharge between teeth and gums may occur frequently. Bad breath and a persistent bad taste in the mouth are common.
Clinical Measurements
Pocket depths measure 8 millimeters or more. X-rays show bone loss exceeding 50%, and some teeth may have lost most of their bony support. Tooth mobility is Class II or Class III (the tooth moves visibly in any direction or can be depressed into the socket). Furcation involvement, where bone loss extends into the space between the roots of multi-rooted teeth, is common.
Treatment at This Stage
Treatment at this stage focuses on saving as many teeth as possible and halting further destruction. Options include flap surgery, bone grafting, guided tissue regeneration, and extraction of teeth that cannot be saved. Teeth with extensive mobility or bone loss may need to be replaced with implants, bridges, or dentures.
A periodontist will develop a treatment plan that prioritizes the teeth with the best prognosis. Treatment may take several months and require multiple surgical procedures. Ongoing maintenance visits every 3 to 4 months are typically needed for the rest of your life to prevent recurrence.
Treatment Cost by Stage
Treatment costs increase significantly as gum disease progresses. Early intervention is not only better for your health but substantially less expensive. Costs vary by location, provider, and case complexity.
- Gingivitis (professional cleaning): $100 to $300 per visit.
- Early periodontitis (scaling and root planing): $500 to $2,000 for full-mouth treatment.
- Moderate periodontitis (flap surgery, possible grafting): $1,000 to $4,000 per quadrant.
- Severe periodontitis (surgery, grafting, extractions, replacements): $3,000 to $15,000 or more depending on the extent of treatment and tooth replacement needs.
Insurance Coverage
Most dental insurance plans cover scaling and root planing and basic periodontal maintenance. Coverage for surgical procedures varies by plan. Many plans cover 50-80% of periodontal surgery after the deductible, up to the annual maximum. Bone grafting and guided tissue regeneration may have separate limitations. Verify your coverage before treatment begins.
When to See a Periodontist
A periodontist is a dental specialist who has completed 3 years of additional training beyond dental school focused on the prevention, diagnosis, and treatment of gum disease and the placement of dental implants.
Your general dentist can treat gingivitis and perform scaling and root planing for early periodontitis. However, if pockets persist at 5 mm or deeper after initial treatment, if you have moderate to severe bone loss, or if surgical intervention is needed, a periodontist is the specialist to see.
You should also see a periodontist if you have diabetes or other systemic conditions that affect gum health, if gum disease runs in your family, or if you notice that your gums are receding, your teeth feel loose, or your bite is changing.
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