Your gums bleed when you brush, or they look red and puffy, and you have read that this could be gingivitis or periodontitis without a clear idea of which is which. The gingivitis vs periodontitis difference is simple once you see it. Gingivitis (early gum infection) is inflammation of the gum only. It is caused by plaque, it is common, and it goes away completely when the plaque is removed. Periodontitis (pyorrhea) is what happens when that inflammation spreads below the gum and starts destroying the bone and fibres that hold the teeth in. That damage does not grow back.
So the line between the two is the line between a problem you can fix at home with better brushing and a professional clean, and a problem that needs treatment to stop teeth loosening. Most people cross that line without noticing, because periodontitis rarely hurts until it is advanced.
This guide explains the stages of gum disease, how to tell which stage you are at, what makes it move faster, what treatment involves, and what happens to teeth that are lost to it.
What is the difference between gingivitis and periodontitis?
Both start the same way. Plaque, the soft film of bacteria that forms on teeth every day, builds up along the gum line. If it is not brushed away within a day or two, the gum reacts to it with inflammation: redness, swelling, and bleeding when touched. This is gingivitis. The gum is irritated, but the tooth is still held firmly by healthy bone and fibres underneath.
If the plaque stays, it hardens into calculus (tartar), which cannot be brushed off. Bacteria under the tartar and inside the swollen gum move deeper, and the body’s own immune response, trying to fight them, starts breaking down the fibres that attach the gum to the tooth and the bone that holds the root. A pocket opens between gum and tooth, and it deepens over time. This is periodontitis.
Gingivitis is reversible. Periodontitis is not, though it can be stopped. Once bone has been lost around a tooth, treatment can halt further loss and keep the tooth for many years, but the bone that has gone does not return on its own. This is why the stage at which gum disease is caught matters so much.
The scale of the problem is large. The WHO Global Oral Health Status Report estimates that severe periodontal disease affects around 19 percent of adults worldwide, more than a billion people (WHO, 2022). In India, where paan and tobacco chewing add to the risk, gum disease is one of the main reasons adults lose teeth. Our page on bleeding gums and what causes them covers the early signs in more detail.
What are the stages of gum disease?
Dentists describe gum disease as a progression rather than two separate conditions. The stages below are a simplified version of the classification used by periodontists (gum specialists) worldwide, which grades periodontitis by how much bone has been lost and how complex the treatment will be (Tonetti, Greenwell and Kornman, 2018).
Stage 0: healthy gums
Pale pink, firm, fitted closely around each tooth. No bleeding on brushing or flossing.
Gingivitis
Gums are red, swollen and bleed easily. There may be a bad taste or bad breath. No bone loss. Fully reversible with plaque removal.
Periodontitis, early (stage 1 to 2)
Pockets of 4 to 5 millimetres have formed between gum and tooth, with mild to moderate bone loss visible on an X-ray. Teeth are still firm. There may be no symptoms beyond what gingivitis causes, which is the danger.
Periodontitis, severe (stage 3 to 4)
Pockets of 6 millimetres or more, significant bone loss, gums pulling away from the teeth, and teeth that are loose, drifting or have already been lost. Chewing may be uncomfortable and abscesses (pus-filled swellings) can form.
Bone loss is measured on an X-ray, not by looking, which is why a dentist uses a fine probe to measure pocket depth and takes an OPG or RVG to see the bone. The stage sets the treatment. Early periodontitis is usually managed with deep cleaning; severe periodontitis may need gum surgery and, for some teeth, extraction.
Can gingivitis be reversed at home?
Yes, and this has been shown very directly. In a classic study, healthy volunteers stopped all brushing and within 10 to 21 days every one of them developed gingivitis. When they resumed careful brushing, the gums returned to full health within about a week (Löe, Theilade and Jensen, 1965). The gum does not hold a grudge; remove the plaque and it recovers.
The home routine that reverses gingivitis is not complicated, but it has to be done every day:
- Brush twice a day for two minutes with a soft brush, angling the bristles into the gum line rather than skating over the teeth
- Clean between the teeth once a day with floss or interdental brushes, because a toothbrush does not reach there
- Keep brushing the areas that bleed; bleeding gums need more cleaning, not less
- Cut down on sugary snacks and drinks between meals, which feed plaque
- Stop smoking and chewing tobacco or paan, which hide the bleeding and speed up the damage
Expect the bleeding to reduce within one to two weeks of a proper routine. If it does not, the likely reason is tartar, which no brush can remove and which keeps the gum inflamed no matter how well you clean. That needs a professional cleaning and scaling to take the hard deposits off, after which home care can keep the gums healthy.
What are the signs gingivitis has become periodontitis?
The frustrating thing about periodontitis is that its early stage feels the same as gingivitis. The gums bleed, they may be a little swollen, and there is no pain. The signs that bone is being lost appear gradually and are easy to put down to age. Watch for these:
- Gums that have pulled back, making the teeth look longer or exposing the yellowish root
- New gaps opening between teeth, or front teeth that have started to splay outwards
- Teeth that feel slightly loose, or a bite that feels different from before
- Persistent bad breath or a bad taste that brushing does not fix
- Pus at the gum line, or a swelling on the gum that comes and goes
- Food packing between teeth that used to sit tight together
- Sensitivity to cold on exposed root surfaces
- A tooth that has become sore to chew on without any obvious cavity
Loose or drifting teeth mean the disease is already advanced. Bone loss has to reach a significant level before a tooth moves, so by the time this happens, the pockets are deep and treatment is more involved. Teeth that have splayed outwards or drifted are often the first thing patients notice, particularly in the upper front teeth.
Because the early stage is silent, the only reliable way to catch periodontitis before teeth loosen is a check-up where the dentist probes the pocket depths around every tooth and takes an X-ray. If you have not had this done in the last year, and your gums bleed, it is worth booking one. Results vary from person to person; our dentists assess this for you at the consultation.
If any of these signs sound familiar, a gum check at Apollo Dental Vadavalli takes under 30 minutes and you can book for the same day on +91 88705 04111.
How is periodontitis treated, and can lost bone come back?
Treatment aims to remove the bacteria and tartar from inside the pockets so the gum can heal back against the root and the bone loss stops. The first step is scaling and root planing, sometimes called deep cleaning. Under local anaesthetic, the dentist cleans below the gum line, removing tartar from the root surfaces and smoothing them so the gum can reattach. This is usually done over one to four visits, a section of the mouth at a time.
Six to eight weeks later the pockets are measured again. Most shallow and moderate pockets shrink well. Where deep pockets remain, gum surgery may be needed to lift the gum, clean the root directly, and reshape the bone. In selected cases, bone grafting or a technique called guided tissue regeneration can rebuild some lost bone around a tooth, though this works only for certain shapes of defect and not for general bone loss.
For most people, lost bone does not come back, but the loss can be stopped, and a tooth with reduced bone can still last decades if the pockets are kept clean. The key is maintenance: professional cleaning every three to four months rather than every six, because the bacteria that cause periodontitis return to deep pockets within about three months. Our page on gum treatment describes each step, from scaling to surgery to maintenance.
Some teeth cannot be saved. When bone loss is so severe that a tooth is very loose, or an abscess keeps returning, extraction is the kinder option, because a hopeless tooth left in place keeps destroying bone that would be needed for a replacement. Results vary from person to person; our dentists assess this for you at the consultation.
What happens to teeth lost to gum disease?
Periodontitis is the main reason adults lose teeth after middle age, and it tends to take several at once rather than one. Once teeth are gone, the choices are a removable denture, a bridge on the remaining teeth, or dental implants. Each has its place, but gum disease shapes which is realistic.
Implants are the option most people ask about, and they are possible after periodontitis, but with two conditions. First, the disease must be under control everywhere else in the mouth, because the same bacteria that destroyed bone around a tooth can destroy bone around an implant. Second, there must be enough bone left to hold the implant, and bone loss from periodontitis often means a graft is needed first. A CBCT scan (a 3D X-ray) taken in-house shows how much bone remains and where. Our dental implants page explains what is involved when bone is short.
A history of periodontitis is not a bar to implants, but it does mean stricter maintenance for life. People who have had gum disease and then implants are asked to come for cleaning every three to four months and to keep the gums around the implants scrupulously clean, because the early signs of trouble around an implant are just as silent as they were around the teeth.
A bridge is possible if the neighbouring teeth have enough bone to carry the extra load, which is not always the case after periodontitis. A denture is always possible and is often the first step while the mouth is stabilised, with implants considered later once the gums have been healthy for a year or more.
When should you see a dentist about this?
See a dentist if your gums have been bleeding for more than two weeks despite good brushing, if the gums have pulled back, if any tooth feels loose or has drifted, or if you have persistent bad breath or a bad taste. See one sooner, within a day or two, if a gum is swollen and painful or there is pus, because an abscess needs draining and can damage bone quickly.
The examination is straightforward. The dentist measures the pocket depth around each tooth with a fine probe, checks for bleeding and looseness, and takes an OPG or RVG X-rays to see the bone level. From this you get a clear answer: gingivitis that a clean and better home care will reverse, or periodontitis at a stated stage with a treatment plan to stop it. Our gum treatment page describes what happens next at each stage.
Every specialty at our clinic has doctors with more than 5 years of experience, and gum treatment is done in-house with autoclave sterilisation and single-use items. Results vary from person to person; our dentists assess this for you at the consultation.
Frequently asked questions
What is the main difference between gingivitis and periodontitis?
Gingivitis is inflammation of the gum only, caused by plaque, with no loss of bone. It is fully reversible with proper cleaning. Periodontitis is the stage where the infection has spread below the gum and destroyed some of the bone and fibres holding the teeth. That bone loss cannot be undone, though treatment can stop it progressing.
Can gingivitis be reversed?
Yes, completely. Studies show gums return to health within about a week once plaque is removed and kept off. Brush twice a day angling into the gum line, clean between the teeth daily, and have any tartar removed professionally. If bleeding continues after two weeks of good care, tartar below the gum is the usual reason.
How long does it take for gingivitis to turn into periodontitis?
There is no fixed time. Some people have gingivitis for years without bone loss, while others progress within months. Smoking, tobacco chewing, diabetes and family history all speed it up. Because early periodontitis has no extra symptoms, the only way to know is a dental check with pocket measurement and an X-ray.
What are the symptoms of periodontitis?
Bleeding and swollen gums as in gingivitis, plus signs of bone loss: gums receding so teeth look longer, new gaps or drifting front teeth, loose teeth, persistent bad breath, pus at the gum line and sensitivity on exposed roots. Pain is uncommon until the disease is advanced, which is why it is often missed.
Can I get implants if I have had gum disease?
Usually, provided the gum disease is fully under control and there is enough bone, which a CBCT scan shows. Bone grafting may be needed first. Because the same bacteria can affect implants, people with a history of periodontitis need professional cleaning every three to four months for as long as they have the implants.
If your gums bleed and you are not sure which stage you are at, call +91 88705 04111 and book a same-day gum check, and we will measure, X-ray and tell you plainly.
This article is general information and not a substitute for a dental consultation. Results vary from person to person.