IL1B and Peri-Implantitis: The median values for IL-1β in each group were as follows: 0.03 (0.01–0.08) μg/site in the healthy group, 0.15 (0.09–0.30) μg/site in the mucositis group, and 0.08 (0.02–0.51) μg/site in the peri-implantitis group.