The mouth is the system entrance smoke crosses. Logically, it is also one of the places where its effects show up earliest. Yellowing teeth, receding gums, breath nobody dares mention, lost teeth: tobacco's oral bill is heavy — and largely reversible when you quit.

What smoke does to your mouth, step by step

Periodontitis, the silent drama

Periodontitis is inflammation of the supporting tissues around the tooth (bone, ligament, gum). It starts as simple gingivitis, then silently progresses to tooth loosening. Tobacco plays a triple role:

• It masks bleeding gums — the usual first warning — by tightening vessels. The disease progresses undetected.

• It weakens local immunity, letting bacteria proliferate.

• It reduces repair capacity of periodontal tissues.

Result: smokers lose teeth earlier and faster than non-smokers.

Myth vs reality

Mouth cancers: an often-ignored risk

See our dedicated article on the 17 cancers linked to tobacco.

Bad breath, more complex than it seems

A smoker's halitosis is not just 'a smoke smell'. It is a cocktail:

• Smoke residue in mouth, sinuses, lungs.

• Altered oral flora: proliferation of bacteria producing smelly sulphur compounds.

• Dryness: less saliva = less natural cleansing.

• Gastro-oesophageal reflux more frequent in smokers.

Often, the people around you smell it before you do — you have got used to the smell.

Recovery after quitting

1. 2-3 days breath starts improving.
2. 2 weeks tartar deposits more slowly, gums regain their normal pink colour.
3. 3 months gum inflammation drops clearly, periodontitis stabilises.
4. 6-12 months oral flora normalises, gingival bleeding may reappear as a normal warning signal.
5. 5 years oral cancer risk significantly reduced.
6. 10 years cancer and tooth-loss risk approaches that of a non-smoker.

In United Kingdom

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