If your gums don't bleed, that doesn't mean they're healthy. In smokers, it can mean the opposite.
Bleeding when you brush is the warning light most people watch for, and it's a good one. It's usually the first sign that your gums are inflamed. But smoking tends to switch that light off, which is why we don't rely on it.
Why Smokers' Gums Can Look Healthier Than They Are
Study after study has found that smokers' gums bleed less than non-smokers' gums with the same amount of disease. Smokers' gum tissue is often pink and firm, which looks reassuring. Exactly why smoking dampens bleeding is still being worked out, and the old explanation, that nicotine simply squeezes the blood vessels shut, turns out to be too simple. What matters in practice is the result: a calm-looking mouth can be hiding active disease.
What's Going On Underneath
Smokers are more likely to develop gum disease, tend to get it more severely, and often respond less well to treatment. The damage happens in the bone that holds your teeth in, which you can't see and can't feel until it's advanced. By the time a tooth feels loose, a lot of support has already gone, and lost bone doesn't grow back.
That's why, for smokers especially, we don't go by bleeding alone. We measure the gum pockets around each tooth and take x-rays to check bone levels. Those numbers tell us what your gums can't.
If You Stop, Your Gums May Bleed More at First
This surprises people. Studies following smokers who quit have found that gum bleeding often increases in the first weeks. It isn't a sign you've done something wrong. It generally means your gums are starting to respond normally again. Keep brushing gently, clean between your teeth, and let us know. If it's still happening after a few weeks, we'll take a look.
What We'd Suggest
If you smoke, a regular hygiene visit is the best protection: £77 for 20 minutes or £105 for 30. We'll check your gums properly, clean what you can't reach, and tell you honestly where things stand. And if you're thinking about stopping, Help Me Quit Wales, the NHS stop smoking service, is free and on 0800 085 2219 (helpmequit.wales). We ask about smoking at every visit for exactly this reason, and getting your gums healthy comes first before any bigger treatment.
Source: Trisha O'Hehir, The role of nicotine in bleeding, RDH magazine.