Gingivitis vs Periodontitis: What’s the Difference?

Gingivitis is the early stage of gum disease. It causes inflammation in the gums but does not involve permanent loss of the bone supporting the teeth. With professional care and effective daily cleaning, gingivitis can usually be reversed.

Periodontitis is a more advanced form of gum disease. The inflammation extends below the gumline and damages the tissues and bone that hold the teeth in place. The damage already caused by periodontitis cannot simply be reversed, but treatment can help control the disease and prevent further bone loss.

What Is Gingivitis?

Gingivitis develops when plaque collects around the gumline. Plaque contains bacteria that irritate the gums and cause inflammation.

Healthy gums are generally firm and do not bleed during normal brushing or flossing. Gums affected by gingivitis may become:

• Red
• Swollen
• Tender
• More likely to bleed
• Sensitive during brushing or flossing

Gingivitis often causes little or no pain. A person may therefore have inflamed gums for some time without realising that treatment is needed.

At this stage, the infection has not destroyed the structures that attach the teeth to the jaw. Removing the plaque and improving oral hygiene can usually return the gums to health.

What Is Periodontitis?

Periodontitis develops when inflammation moves deeper beneath the gumline and begins to damage the structures supporting the teeth.

As the gum separates from the tooth, a space known as a periodontal pocket forms. Plaque and bacteria can collect inside this pocket, where they are difficult to remove with a toothbrush or floss.

The body’s inflammatory response to the bacteria contributes to the breakdown of the surrounding tissues and bone. As more support is lost, the pocket becomes deeper and the disease becomes harder to control.

Possible signs of periodontitis include:

• Bleeding or swollen gums
• Persistent bad breath
• Receding gums
• Teeth that appear longer
• Gaps developing between teeth
• Pus around the gumline
• Pain when chewing
• Loose or shifting teeth
• Changes in the way the teeth meet

Periodontitis can also progress without strong pain. The absence of pain does not confirm that the gums and supporting bone are healthy.

Can Gingivitis Turn Into Periodontitis?

Untreated gingivitis can progress to periodontitis, but this does not happen at the same rate for everyone.

The risk is influenced by the amount of plaque present, smoking, genetics, general health and how the immune system responds to bacteria. Some people develop significant supporting bone loss, while others may have gingivitis for a long period without the same progression.

Once bone and attachment have been lost, the condition is no longer gingivitis. It is periodontitis and requires more extensive management.

This is why bleeding gums should be addressed early, even when there is no pain or tooth movement.

What Is the Main Difference Between Gingivitis and Periodontitis?

The main difference is whether the supporting structures around the teeth have been permanently damaged.

Gingivitis	Periodontitis
Inflammation is limited to the gums	Inflammation affects deeper supporting tissues
No loss of supporting bone	Supporting bone has been lost
Usually reversible with effective care	Damage cannot be fully reversed
Gums may bleed but teeth remain supported	Teeth may loosen or move as support is lost
Treatment is generally simpler	Ongoing professional management is required

Bleeding can occur with both conditions, so the amount of bleeding alone cannot show how advanced the disease is. The dentist needs to measure the gums and assess the supporting bone.

What Causes Gum Disease?

Plaque is the main cause of both gingivitis and periodontitis. If plaque is not removed, it can harden into calculus, also called tartar.

Calculus creates a rough surface that collects further plaque. Once it forms, it cannot be removed properly with regular brushing and requires professional cleaning.

Some factors can increase the risk or severity of gum disease, including:

• Smoking
• Poorly controlled diabetes
• Inconsistent brushing and interdental cleaning
• Dry mouth
• Certain medicines
• Hormonal changes
• A family history of periodontitis
• Crowded teeth or restorations that are difficult to clean

These factors do not replace plaque as the main cause, but they can affect how the gums respond and how quickly damage develops.

How Is Gum Disease Diagnosed?

A dentist examines the gums and measures the spaces between the gums and teeth with a periodontal probe. Healthy gums usually fit closely around the teeth, while deeper measurements can indicate periodontal pockets.

The examination may assess:

• Bleeding around the teeth
• Pocket depth
• Gum recession
• Tooth movement
• Plaque and calculus
• Changes in the bite
• Loss of attachment around each tooth

Dental X-rays may also be needed to check the level and shape of the supporting bone.

Gingivitis is diagnosed when the gums are inflamed but the supporting attachment and bone remain intact. Periodontitis is diagnosed when attachment or bone has been lost because of gum disease.

How Is Gingivitis Treated?

Treatment focuses on removing plaque and calculus and preventing them from building up again.

This commonly involves professional cleaning and improvements to daily oral hygiene. The dentist or dental hygienist may recommend a brushing method and suitable tools for cleaning between the teeth.

Treatment may include:

• Brushing twice a day with fluoride toothpaste
• Cleaning between the teeth every day
• Professional removal of plaque and calculus
• Cleaning areas around crowns, bridges or crowded teeth more carefully
• Reviewing factors that make plaque control difficult

Bleeding may initially continue while inflamed gums are being cleaned. With consistent care, it should gradually reduce as the gums recover.

How Is Periodontitis Treated?

Periodontitis requires cleaning beneath the gumline to remove bacteria and calculus from the root surfaces. This treatment may be called deep cleaning, scaling and root planing or non-surgical periodontal treatment.

The mouth may be treated in sections, and local anaesthetic may be used to keep the patient comfortable. After treatment, the periodontal pockets are measured again to see how the gums have responded.

If deep pockets or active disease remain, further treatment may be required. Depending on the condition, this can include periodontal surgery or referral to a periodontist.

The purpose of treatment is to control the infection, reduce pocket depth where possible and protect the remaining support around the teeth. It cannot restore all bone and attachment that have already been lost.

Why Is Ongoing Maintenance Important?

Periodontitis can become stable after treatment, but the risk of recurrence remains. Bacteria can collect again inside periodontal pockets if daily cleaning and professional maintenance are not continued.

The maintenance schedule depends on the severity of the disease, smoking, medical conditions and the patient’s ability to clean effectively. People with a history of periodontitis may need professional care more frequently than patients with healthy gums.

At each appointment, the dental team can check whether pockets are stable, bleeding has returned or further bone loss is developing.

When Should You See a Dentist?

Arrange a dental examination with your family dentist if your gums regularly bleed, appear swollen or have begun to recede. You should also seek advice if you notice persistent bad breath, new gaps between the teeth or changes in your bite.

Prompt assessment is particularly important if a tooth feels loose or pus appears around the gumline. These signs may indicate advanced disease or a localised infection requiring timely treatment.

Final Answer

Gingivitis causes inflammation without permanent loss of the structures supporting the teeth. It can usually be reversed by removing plaque and improving daily cleaning.

Periodontitis damages the gum attachment and supporting bone. That damage cannot be completely reversed, but treatment and ongoing maintenance can slow or stop further progression. A dental examination is needed to determine which condition is present because both can develop with little or no pain.