Gum Disease: From Bleeding Gums to Bone Loss — Stages, Causes and Treatment

What gum disease is

"Gum disease" covers a spectrum with a bright line down the middle.

Gingivitis — inflammation only. Plaque (a bacterial film that reforms within hours of brushing) accumulates at the gumline; the immune response makes gums red, puffy and quick to bleed. No structural damage yet: remove the plaque consistently and gums return to normal in days to weeks. Most adults have some gingivitis somewhere.

Periodontitis — inflammation plus destruction. In a susceptible minority-turned-large-fraction (about 40–50% of adults over 30, severe in roughly 8%), the inflammatory battle spreads below the gumline. The gum detaches from the tooth, forming a pocket; bacteria colonize the pocket where brushes cannot reach; and the immune response itself dissolves the periodontal ligament and jawbone. Pockets deepen, gums recede, roots show, teeth loosen and drift. The lost bone is the permanent part — hence everything on this page pushes action leftward, at the bleeding stage described in bleeding gums.

Signs by stage

Early: gums that bleed with brushing or flossing, redness and puffiness at the margins, and persistent bad breath. Established: receding gums ("getting long in the tooth"), sensitivity at exposed roots, a bad taste, pus at the gumline, and gaps opening between teeth. Late: loose teeth, changed bite, aching, and teeth lost outright. The disquieting feature throughout: pain arrives last, if at all — periodontitis demolishes quietly, which is why "nothing hurts" is not evidence of health.

Causes and accelerants

The engine is plaque; the throttle settings differ per person:

• Smoking — the strongest modifiable factor: several-fold higher risk, faster progression, worse treatment response — and it masks bleeding by constricting gum vessels, hiding the warning sign
• Diabetes — the two-way street in the FAQ
• Genetics — susceptibility runs in families; some people harvest heavy plaque with mild consequences and others the opposite
• Hormonal shifts — pregnancy gingivitis is near-universal; puberty and menopause tilt the field
• Medications — drugs causing gum overgrowth (phenytoin, ciclosporin, some calcium-channel blockers) and the many causing dry mouth
• Stress, poor nutrition (scurvy's bleeding gums are the extreme case), obesity, and immune conditions
• Local traps — crowding, defective fillings, calculus (tartar: mineralized plaque that only professional scaling removes)

How dentists assess it

A periodontal exam measures pocket depths with a probe at six points per tooth (1–3 mm healthy; 4 mm watchful; 5 mm+ disease), records bleeding on probing, recession and mobility, and X-rays show bone levels. The result stages the disease and sets the treatment plan — and gives the numbers by which later visits prove whether it is controlled.

Treatment

Gingivitis: professional cleaning to clear plaque and calculus, then technique coaching — brushing angled into the gumline twice daily, and daily interdental cleaning (floss or, for most adults, interdental brushes sized to the gaps). Reversal is the expected outcome.

Periodontitis: scaling and root planing — "deep cleaning" of the root surfaces within pockets, under local anesthetic, usually by quadrant — is the workhorse, shrinking pockets and settling inflammation in most cases. Adjuncts (locally applied or short-course antibiotics) help selected cases. Pockets that stay deep (usually 6 mm+) may need periodontal surgery to access roots or, in suitable defects, regenerative grafting. Then the non-negotiable: maintenance cleanings every 3–4 months, the single strongest predictor of keeping teeth long-term.

Whole-field moves: smoking cessation improves every outcome above; glucose control in diabetes likewise; an electric brush earns its keep in trials by small but real margins; chlorhexidine rinses serve short-term flare control (staining limits long use). Mouthwash, note, rinses over pockets it cannot enter — adjunct, never substitute. The supplement aisle's gum claims are graded in Do oral probiotics work?

When to see a dentist

Book in for: bleeding that outlasts two weeks of proper cleaning, receding gums, persistent bad breath or bad taste, any loose adult tooth (promptly), pus, or if pregnant with sore bleeding gums. See a dentist or doctor urgently for gum pain with facial swelling or fever — abscess territory. And with no symptoms at all: the routine exam remains how the silent stage gets caught, at the price of a scale-and-polish instead of a demolition report.

Frequently asked questions

References