Which signs indicate possible peri-implant failure requiring prompt intervention?

• A. Increased probing depths with bleeding on probing, suppuration, mobility, and radiographic crestal bone loss.
• B. Only increased probing depths.
• C. Bleeding on probing alone.
• D. Radiographic crestal bone loss alone.

Answer: (A)

The main idea is that a combination of signs around an implant signals active disease with a real risk of failure, so it demands prompt action. Increased probing depths around the implant show pocket formation and soft-tissue inflammation; bleeding on probing confirms inflammatory activity; suppuration indicates infection; mobility reveals loss of implant stability or osseointegration; and radiographic crestal bone loss demonstrates loss of supporting bone. When these findings occur together, they point to peri-implantitis progressing toward failure, making urgent intervention essential to try to halt progression and salvage the implant. Isolated signs can occur in less severe situations and don’t carry the same urgency.