Which factor is NOT typically a contributor to dental implant failure risk?

• A. Bone quality
• B. Smoking
• C. Exercise level
• D. Diabetes

Answer: (C)

The main idea is that implant failure risk is driven by factors that affect healing and the bone-implant integration process. Bone quality dictates how well the implant achieves initial stability and long-term stability during osseointegration. If the bone is poor, the implant may not achieve solid integration. Smoking impairs blood flow and healing, increasing the risk of infection and poor osseointegration. Diabetes can impair wound healing and raise infection risk, further boosting failure chances.

Exercise level, on the other hand, does not have a direct, well-established effect on the biological processes of bone healing around an implant in typical patients. Regular physical activity supports overall health but does not inherently change how bone remodels around an implant or the likelihood of successful osseointegration, unless it leads to unusual trauma or extreme loading. Therefore, it is not considered a typical contributor to implant failure risk.