This patient is a healthy 45 year-old female who came in to cement her implant-supported FPD which was placed 7 years ago. The patient has a history of peri-implantitis, which was treated a year ago. One week following re-cementation the patient came back and complained of tenderness on the buccal aspect of implant #24 (first premolar). An xray was taken. 3 months later she came back with the same complaints. Another x-ray was taken which showed severe vertical bone loss. What are your thoughts on this?