Smoking is one of the most important modifiable risk factors for gum disease (periodontitis). In people who smoke, gum disease is more common, can progress faster, and the response to treatment may be more limited. What is more, because smoking can mask bleeding, the most noticeable warning sign of gum disease, the problem is often detected late.
How does smoking affect the gums?
Nicotine and other substances in tobacco smoke harm gum tissue in several different ways:
- Blood circulation: Nicotine constricts blood vessels, reducing the amount of blood and oxygen that reaches the gums.
- Immune response: The function of the white blood cells that help defend against bacteria may be impaired.
- Healing capacity: The activity of the cells that build connective tissue slows down, and wound healing is delayed.
- Bacterial balance: The bacterial community in the gum pockets may shift in favor of disease-associated species.
As a result, smokers may have deeper gum pockets, more bone loss and gum recession. Studies report that the risk of periodontitis is markedly higher in smokers than in non-smokers and that this risk rises with the number of cigarettes smoked. The effects of smoking are not limited to the gums; tooth staining, bad breath and a reduced sense of taste are also common.
Why is gum disease detected late in smokers?
Because smoking can reduce bleeding, the most visible sign of gum inflammation. Due to the narrowing of the blood vessels, inflamed gums do not become as red, swollen or prone to bleeding as expected. While the person believes their gums are healthy, the disease may continue to progress below the gumline.
For this reason, in smokers the thought "my gums don't bleed" is not reassuring on its own. Gum health can only be properly assessed with a periodontal examination in which the gum pockets are measured, along with X-rays when needed. For more on what bleeding means, read our article on why gums bleed.
Why does smoking matter in the classification of periodontitis?
In the classification adopted in 2017 by the American Academy of Periodontology (AAP) and the European Federation of Periodontology (EFP), smoking is one of the risk factors that determine the grade of the disease. The grade reflects how fast the disease is progressing and the expected response to treatment.
Under this classification, smoking fewer than 10 cigarettes a day can raise the grade to at least B, and smoking 10 or more a day can raise it to C. Grade C indicates a risk of rapid progression. For details of the classification, see our article on periodontitis stages and grades.
Does smoking affect the outcome of gum treatment?
Yes. In patients who smoke, the response to both non-surgical and surgical gum treatment is generally more limited. The reduction in pocket depth and the gain in attachment may be smaller than in non-smokers, and the disease is also more likely to recur after treatment.
There are data on this topic from Türkiye as well. A 2023 study co-authored by Dr. Nadin Gemrekoğlu, DDS, PhD, compared the clinical effects of initial periodontal therapy in smokers and non-smokers with Stage III, Grade C periodontitis. The study observed improvement in clinical parameters after treatment in both groups, but concluded that smoking negatively affected the response to initial periodontal therapy.
The European Federation of Periodontology's S3-level clinical practice guideline for the treatment of periodontitis also recommends smoking cessation support as part of the first step of therapy. In other words, tackling smoking is an integral part of gum treatment. For information about the treatment process, see our gum disease treatment page.
How does smoking affect implant treatment?
Smoking can negatively affect the healing and long-term health of the tissues around an implant. Studies report that smoking may be associated with implant loss and bone loss around implants. In addition, healing after procedures that may be needed before implant placement, such as bone grafting, can also be adversely affected in smokers.
This does not mean that a person who smokes cannot have implants; however, it is taken into account in treatment planning, and the patient is informed about it. For people considering dental implants, quitting or at least cutting down on smoking is important for healing and maintenance. For information about inflammation around implants, see the peri-implantitis treatment page.
Data on the long-term effects of e-cigarettes and heated tobacco products on gum health are still limited. Many of these products contain nicotine, and nicotine's constricting effect on blood vessels is well known. For this reason, these products cannot be said to be harmless to the gums.
Does quitting smoking benefit the gums?
Yes. In people who quit smoking, the risk of periodontitis has been reported to decrease over time and the response to gum treatment to improve. After quitting, as blood circulation in the gums recovers, bleeding that was previously masked may become more noticeable for a while. This reflects the true condition of the gums and usually subsides with treatment and regular care.
For support with quitting, you can turn to your family physician, a smoking cessation clinic or your local quit-smoking helpline.
Gum treatment can be a good source of motivation to quit smoking. The measurements taken during treatment make it possible to track changes in the gums in concrete terms. Cutting down can be a starting point; however, since smoking fewer than 10 cigarettes a day is also considered a risk factor in the classification, the real goal is to quit completely.
When should you see a dentist?
If you smoke, regular periodontal examinations are recommended even if you have no obvious gum complaints. Do not delay an examination in the following situations:
- Loose teeth or new gaps between teeth,
- Gum recession or teeth that look longer,
- Persistent bad breath,
- Inflammation or an abscess at the gumline,
- A sore in the mouth that does not heal, or white or red patches.
Sores in the mouth that last longer than two weeks should be evaluated with particular care in smokers. For people who smoke, check-ups may be scheduled more frequently depending on gum condition and risk level. Treatment is planned individually after the examination and any necessary tests. To make an appointment, please visit the contact page.