7 Warning Signs of Gum Disease You Should Never Ignore

Bleeding Gums When Brushing or Flossing

Healthy gums do NOT bleed. If your gums bleed when you brush, even occasionally, active gum inflammation is present. This is gingivitis — the earliest, most reversible stage of gum disease. The bleeding is caused by inflamed gum tissue with increased blood vessel density responding to bacterial plaque at the gum margin. Most Australians dismiss this as brushing too hard. They are wrong. The Australian Dental Association confirms that gum bleeding is NEVER normal and always warrants investigation.

Gums That Look Red, Swollen, or Darker Than Usual

Healthy gums are pale pink, firm, and fit snugly around each tooth. Gums that appear red, puffy, or darker (sometimes described as purplish or dusky) indicate active bacterial infection and inflammation. The discolouration reflects increased blood flow to the infected tissue — the same mechanism as any infected wound in the body. Swollen gums may also bleed more easily and can feel tender to the touch, though pain is often absent.

Persistent Bad Breath That Brushing Doesn't Resolve

When gum disease creates periodontal pockets — spaces between the tooth and gum — those pockets become anaerobic environments harbouring bacteria that produce volatile sulphur compounds (VSCs). Unlike general morning breath, gum-disease-related halitosis persists throughout the day and returns quickly after brushing. If you or someone close to you notices persistent bad breath despite regular oral hygiene, active periodontal infection is a likely cause. See our detailed guide on why bad breath persists despite brushing.

Gums That Are Pulling Away From Your Teeth (Recession)

Gum recession — where the gum tissue pulls away from the tooth neck, exposing the root — is a structural sign of advancing gum disease. Receded gums make teeth appear longer than normal, and may expose sensitive root surfaces. This recession is caused by the chronic inflammation of periodontitis destroying gum tissue and the underlying bone. Unlike the earlier signs, recession is NOT fully reversible — receded gum tissue does not spontaneously reattach. The priority is halting further recession.

Sensitivity Near the Gum Line — Especially to Cold

When gums recede, they expose the root surface of the tooth — an area covered by cementum (softer than enamel) and directly connected to the nerve via dentinal tubules. Cold beverages, cold air, or sweet foods cause a sharp, brief pain focused at the gum line. This sensitivity is the direct result of gum recession exposing root surfaces that are NOT protected by enamel. It is a late early-to-mid-stage sign that structural damage has already occurred.

A Change in How Your Teeth Come Together When You Bite

As periodontitis destroys the bone anchoring teeth, teeth may begin to shift position. This creates noticeable changes in the bite — teeth that previously aligned perfectly now feel different when you chew. Dentures or dental appliances may fit differently. This shifting is called tooth migration and indicates significant bone loss has already occurred around the affected teeth. It is a serious mid-to-advanced stage warning sign requiring prompt dental assessment.

Any Tooth That Feels Slightly Loose

A tooth that moves, even slightly, when pushed with the tongue or finger has lost significant periodontal support. The bone and connective tissue that anchor it have been destroyed to the point where normal function is compromised. This is advanced periodontitis. At this stage, the goal is to halt further destruction and, if possible, prevent extraction. Immediate dental assessment is required. Do NOT wait for the tooth to become more mobile — the window for saving it is closing.