Smoker implant candidacy — what the evidence actually says

What the evidence shows

Meta-analyses across the past two decades consistently show that current smokers experience higher implant failure rates, more marginal bone loss, and higher peri-implantitis prevalence than non-smokers. Effect sizes vary, but the direction of the finding is stable.

The size of the effect depends on the definition of 'smoker' used in each study, cumulative pack-years, whether cessation was attempted before surgery, and whether grafting was involved. Failure risk is not binary — it is elevated, not absolute.

Harm-reduction protocols clinicians use

• Peri-operative cessation: many surgeons ask for 1–2 weeks of abstinence pre-op and 4–8 weeks post-op.
• Adjusted maintenance intervals: 3-month recall instead of 6-month.
• More conservative surgical protocols: fewer immediate loading cases, greater use of two-stage healing, more conservative grafting.
• Enhanced patient counseling on peri-implantitis warning signs.

When a 'no' is reasonable

Heavy smoking combined with uncontrolled diabetes, previous head and neck radiation, or advanced periodontal disease can genuinely make implants a poor risk. The decision belongs to a specialist who has examined the patient. A blanket 'no' without individual evaluation is a policy — a well-argued 'yes with conditions' or 'not right now' is medical judgment.