A tooth is to be extracted and an immediate implant is considered. All of the following are legitimate contraindications to immediate placement EXCEPT:

Correct answer: A. The patient's chronological age of 84

• A. Correct — this is the EXCEPTION. CHRONOLOGICAL AGE alone is NOT a contraindication to implant placement. What matters is physiological status: bone quality, healing capacity, medical comorbidity, medications such as antiresorptives, oral hygiene and manual dexterity. Healthy patients in their eighties and nineties achieve osseointegration success rates comparable to younger adults. The only age-related contraindication runs the other way — implants must not be placed in patients who have NOT completed skeletal growth.
• B. Failure to achieve primary stability is a direct contraindication, since micromotion prevents osseointegration.
• C. Insufficient bone volume prevents adequate primary stability and is a real contraindication.
• D. Active infection at the site compromises osseointegration and is a genuine contraindication to immediate placement.