Further malignancy in field change adjacent to osseointegrated implants.

The role of endosseous implants in oral rehabilitation following ablation of oral tumours is established, however the oncological review of these patients has rarely been discussed in the literature. We describe two cases where second primary malignancy in the peri-implant tissues necessitated further major resections. In both cases, the initial clinical appearance and histology suggested peri-implantitis. These cases demonstrate that second primary malignancy can masquerade as benign peri-implant complications and that a high degree of vigilance is required. Fixed prostheses should be regularly removed, especially in patients who have field change.