Final answer:
The correct answer is A. Age of the patient. Early implant failure is not correlated to age.
Step-by-step explanation:
The correct answer is A. Age of the patient.
Early implant failure refers to the failure of dental implants within the first few months after placement. While factors such as type III/IV bone around the implant, poorly controlled diabetes, and regular smoking habit have been shown to be correlated with early implant failure, age of the patient is not.
Research has found that age does not significantly influence the success or failure of dental implants. Younger and older patients alike can have successful implant outcomes if other factors such as bone quality, systemic health, and oral hygiene are properly addressed.