Introduction:
Smoking affects bone nutrition and gum health by disrupting blood supply. Many studies have shown that smoking is associated with periodontal disease, a condition that causes gums to recede.

Objectives:
Dental implants which provide an effective treatment opportunity to replace the teeth lost in the mouth, have been successful for many years. Risk factors for dental implant failure include periodontitis, dental plaque, poor oral hygiene, smoking, alcohol consumption and systemic diseases. Nicotine is the main chemical component that is thought to mediate the hemodynamic effects of smoking and plays a role in the pathogenesis of many diseases. Studies have shown many harmful effects of smoking on oral health.

Methods:
Patients who treated between January 2015 January 2020 at Eskisehir Osmangazi University Faculty of Dentristry and completed 3 years with that prosthesis were included in the study. 211 implants were applied to 94 patients were selected. The ages of the patients vary between 28 and 58, (37 ± 4.1). Of the patients (44 men and 50 women) who were included in the study, 62 were non-smokers and 32 were smokers. The level from the implant circumference to the crestal bone level was determined and recorded on the x-ray, and the diameter of the same implant was measured in vectoral way italic a computer program.

Results:
In the follow-up performed at begining and 36th months according to the time period, the marginal bone loss in the distal region was statistically higher (p <0.05). In the follow-up performed at 36th months according to age range, there was no statistically significant difference in smokers averages and marginal bone loss compared to non-smokers (p> 0.05).

Conclusion(s):
Within the restrictive limits of this study, it can be concluded that bone loss occurred around the implant is more at smokers and this situation creates a risk for implant lost