Which option is NOT a criterion for success in dental implants in bone tests?

• A. No mobility
• B. No peri-implant radiolucency
• C. Minimal vertical bone loss
• D. Peri-implant radiolucency visible

Answer: (D)

In evaluating implant success, stability and a healthy bone-implant interface are the goals. An implant should remain immobile, and radiographs should show solid bone contact without gaps near the implant. Minimal vertical bone loss over time is acceptable and expected if the implant is thriving, reflecting good remodeling without significant bone loss. Seeing a radiolucent area around the implant on radiographs, however, indicates a possible gap at the bone-implant interface or bone loss, signaling compromised osseointegration and a higher risk of failure. Because radiolucency visible around an implant is not a sign of success but a potential problem, it is not considered a criterion for a successful outcome.