Gum disease 101: preventing and treating oral health's silent threat

Gum disease is the leading cause of tooth loss in adults, and its defining feature is that it does not hurt. People lose teeth to it without ever having had a symptom they thought was worth acting on.

Here is what it is, how to spot it early, and what can actually be done.

What gum disease is

Your gums and the bone beneath them hold your teeth in place. Gum disease is inflammation of those supporting tissues, driven by plaque — the bacterial film that forms on teeth constantly. Your immune system reacts to the bacteria, and it is that inflammatory response, sustained over years, that destroys the attachment and the bone.

That is the important mechanism to grasp: the damage is largely done by your own inflammatory response, which is why the same amount of plaque affects different people very differently.

The two stages, and the critical difference

Gingivitis — inflammation limited to the gums. Red, puffy, bleeding when you brush or floss. Gingivitis is fully reversible. Remove the plaque and calculus, keep it off, and the gums return to health with no lasting damage.

Periodontitis — the inflammation has extended to the bone and the fibres anchoring the tooth root. Bone is lost, pockets form between gum and tooth that you cannot clean, and eventually teeth loosen.

Bone lost to periodontitis does not grow back. Treatment stops the disease progressing and keeps the teeth you have; it does not restore what has gone. This is why catching it at the gingivitis stage matters so much — it is the difference between a problem that fully resolves and one you manage for life.

	Gingivitis	Periodontitis
What is inflamed	The gum only	Gum, fibres and bone
Bleeding	Yes	Yes, often less in smokers
Pockets	No	Yes — deeper than 3mm
Bone loss	No	Yes, visible on X-rays
Teeth loose	No	Eventually
Reversible	Fully	No. Can be stabilised
Treatment	A clean and better home care	Deep cleaning, reassessment, lifelong maintenance

Signs to look for

Bleeding when you brush or floss. This is the one people dismiss. Healthy gums do not bleed. Bleeding is not caused by brushing too hard — it is a sign of inflammation, and it is usually the earliest warning you will get
Red, swollen or tender gums
Persistent bad breath or a bad taste
Gums pulling away from teeth, or teeth appearing longer
Sensitivity at exposed roots
Pus at the gumline
Teeth becoming loose, drifting, or your bite feeling different — late signs, get seen promptly
Food packing into a space that never used to trap anything
A denture or partial plate that has stopped fitting the way it did

If you have had bleeding gums for months and have been ignoring it, that is worth an appointment now rather than at your next routine check-up.

What the numbers at your check-up mean

If you have heard a practitioner calling out numbers while an assistant writes them down, that is a periodontal chart. A small blunt probe is walked around each tooth and the depth of the space between gum and tooth is measured in millimetres.

Reading	Generally means
1–3mm, no bleeding	Healthy
1–3mm with bleeding	Gingivitis — reversible
4–5mm	Early periodontitis, or deep inflammation. Needs treatment
6mm and above	Established periodontitis. Cannot be cleaned at home
Bleeding on probing	Active inflammation, whatever the depth
Recession, noted separately	Gum has moved down; root exposed

It is not a score and it is not a judgement. Ask to be told yours — they are the clearest measure of whether things are improving, and comparing this year to last year tells you more than any single reading.

Who is at higher risk

Smoking is the single biggest modifiable risk factor — and it masks the warning signs, because smoking reduces gum bleeding. Smokers also respond less well to treatment.

Others: diabetes, particularly when poorly controlled — the relationship runs both ways, with gum disease making blood glucose harder to control; a family history of early tooth loss, since susceptibility is partly genetic; pregnancy and hormonal changes; dry mouth from medication; stress; and some medications that cause gum overgrowth.

Also: vaping, on which the evidence is still developing but which is not a neutral substitute; immune conditions and immunosuppressant medication; obesity; and crowded teeth or ill-fitting dental work, which create places plaque cannot be cleaned out of.

Prevention

Brush twice daily with fluoride toothpaste, angled into the gumline at about 45 degrees — that junction is where it starts
Clean between your teeth daily with floss or interdental brushes. A toothbrush cannot reach between teeth, which is exactly where gum disease begins. This is the step most people skip and the one that matters most
Use a soft brush, gently. Hard scrubbing causes recession without preventing disease
Regular check-ups and professional cleans to remove calculus — hardened plaque that no amount of brushing will shift
Stop smoking
Manage diabetes

If your gums bleed when you start flossing properly, that is inflammation, not injury. Keep going gently — it typically settles within one to two weeks. If it does not, come and see us.

Treatment

Gingivitis — a professional clean plus improved home care. That is usually the whole of it.

Periodontitis — begins with deep cleaning below the gumline (root debridement), often across several appointments and with local anaesthetic. Then reassessment, because what matters is how the tissues respond. Some cases are referred to a periodontist for surgical treatment.

Expect some gum shrinkage after successful treatment, which can mean longer-looking teeth, gaps, and sensitivity. That is the inflammation resolving, not the treatment failing — but it is worth knowing in advance.

Then maintenance, indefinitely. Periodontitis is controlled, not cured. Most people need three- to four-monthly maintenance appointments for life. Lapse, and it comes back. Anyone who tells you a course of treatment permanently fixes it is not being straight with you.

What the treatment sequence usually looks like

Stage	What happens	Roughly
Assessment	Full periodontal charting, X-rays, photographs, risk factors discussed	One appointment
Cause-related therapy	Deep cleaning below the gumline, usually quadrant by quadrant, with anaesthetic	2–4 appointments over some weeks
Healing	Tissues tighten; pockets shrink where they are going to	6–12 weeks
Reassessment	Charting repeated. What has responded, what has not	One appointment
Further treatment	Re-treatment of specific sites, or referral for surgical treatment	As needed
Maintenance	Shorter recall, usually every 3–4 months, indefinitely	For life

The reassessment is the important appointment and the one people most often skip. Without it, nobody knows whether the treatment worked.

What to expect afterwards

Sensitivity to cold, often for several weeks. Sensitivity toothpaste helps; use it as your everyday paste
Gums that look longer and gaps that appear between teeth. The swelling has gone down
Tender gums for a few days, and some bleeding that evening
Teeth that feel slightly different, because heavy calculus was splinting them
An honest conversation about what did not respond, and what the options are for those teeth

Things people ask about that do not work

Antibiotics alone. They do not remove the biofilm or the calculus. They have a role in specific cases, alongside cleaning, not instead of it
Mouthwash alone. Chlorhexidine is useful short-term after treatment. It does not treat periodontitis, and long use stains teeth
Oil pulling, salt water and herbal rinses. Salt water soothes. None of them remove calculus
Home scalers bought online. They damage enamel and gum, and they cannot reach where the problem is
Brushing harder. Causes recession and treats nothing

Around implants

The same disease process affects implants, where it is called peri-implantitis — and it matters more, because an implant has no periodontal ligament and the process can move faster once established.

Anyone who has lost teeth to gum disease and then had implants placed needs the maintenance programme more than most, not less. Clean around the neck of every implant daily and keep the shorter recall.

The wider health link, honestly

Gum disease is associated with heart disease, stroke, diabetes complications, adverse pregnancy outcomes and other conditions. The associations are real and consistently found. Causation is not established for most of them — shared risk factors like smoking explain part of it. Treating your gums is worth doing for your teeth; we would not claim it prevents heart attacks.

The diabetes link is the best supported, and it runs in both directions.

Questions we are asked

Is gum disease contagious? The bacteria can transfer between partners and from parent to child. Developing the disease depends far more on your own immune response and risk factors than on catching bacteria.

Can I lose teeth that are not loose yet? Bone can be well down before a tooth moves. That is exactly why charting and X-rays exist.

Will my gums grow back? No. Lost gum and bone do not regrow. Some surgical procedures can regenerate limited amounts in particular situations — that is a specialist conversation.

How long will treatment take? Cause-related therapy is usually a few weeks; the maintenance is for life.

Is it my fault? Usually not entirely. Susceptibility is partly genetic, and two people with identical routines can have very different outcomes. What is within your control is plaque, smoking and keeping the maintenance appointments.

Does it hurt? Deep cleaning is done with local anaesthetic. Tenderness for a few days afterwards is normal.

Will my health fund cover it? Periodontal treatment usually sits under general or major dental depending on the item numbers. Ask for a quote with item numbers and check with your fund first. See private health insurance.

Who provides this here

Victorian Dental Group is a general dental practice in Malvern East and holds no specialist registration. Our dentists and oral health therapists diagnose and treat gum disease and provide maintenance care. Where disease is advanced, not responding, or surgical treatment is indicated, we refer to a registered specialist periodontist.

Victorian Dental Group — 291 Wattletree Road, Malvern East VIC 3145 · (03) 9088 5808 · book online

General information only, not personal dental advice. See our disclaimer.

What is gum disease?

Inflammation of the tissues around the teeth, caused by the bacteria in plaque at and below the gum line. The body's immune response to that plaque is what does the damage. It is called a silent condition for good reason — it is usually painless, and many people have it without knowing.

What is the difference between gingivitis and periodontitis?

Gingivitis is inflammation confined to the gum: bleeding when brushing, redness, swelling. It is common and fully reversible — thorough cleaning at home plus a professional clean usually resolves it. Periodontitis is when the inflammation has destroyed the fibres, the cementum on the root and the bone that hold the tooth in. That damage does not reverse. Treatment can stop it progressing and keep the teeth, but lost bone does not come back.

What are the warning signs?

Gums that bleed when you brush or floss — the earliest and most reliable sign, and not normal. Also redness and puffiness, tenderness, persistent bad breath, gums shrinking so teeth look longer, gaps opening between teeth, sensitivity to cold on exposed roots, and later teeth that feel loose, drift, or change the way they meet.

How is it diagnosed?

By measuring the depth of the pocket around every tooth with a probe, recording where it bleeds, and taking X-rays to see the bone level. That full periodontal chart is what distinguishes gingivitis from periodontitis and gives a baseline to compare against later. Looking at the gums alone cannot tell you.

What raises the risk?

Smoking is the biggest modifiable factor, and it also suppresses bleeding, so it hides the main warning sign. Poorly controlled diabetes both worsens gum disease and is worsened by it. Others: family history, stress, medications causing dry mouth or gum overgrowth, pregnancy and hormonal change, and crowding or ill-fitting restorations that make cleaning difficult.

How do I prevent it?

Clean between the teeth every single day — floss or interdental brushes. This is the part most people skip, and it is where gum disease starts, because a toothbrush simply does not reach those surfaces. Then brush twice daily with a soft, small-headed brush angled into the gum line, using gentle circles rather than hard scrubbing. Stop smoking if you can, manage diabetes, and attend for check-ups at the interval advised for you.

What does treatment involve?

Removing plaque and hardened calculus from above and below the gum line, over one or more appointments, with local anaesthetic where pockets are deep. Contributing factors are dealt with at the same time, and your cleaning technique is reviewed — that is where most of the long-term result comes from. The gums are re-measured after several weeks. Expect tenderness for a few days, and expect the gums to shrink as swelling resolves, which can open gaps and make teeth look longer.

Can it come back?

Yes. Gingivitis resolves, but periodontitis is controlled rather than cured — it can become active again if maintenance lapses. That usually means professional cleaning every three to four months rather than every six, plus daily cleaning between the teeth. We are a general dental practice and holds no specialist registration; advanced or rapidly progressing cases are referred to a periodontist. Phone (03) 9088 5808, 291 Wattletree Road, Malvern East VIC 3145.