FIGURE 2.

A, Implant installed 12 y earlier. Clinical features: mobility and shallow peri‐implant probing. Note the peri‐implant radiolucency (gap) and seemingly maintained peri‐implant marginal bone levels. Etiological factor for late implant loss: overload/trauma resulting in loss of integration. B, Implant installed 8 y earlier. Clinical features: deep peri‐implant probing, signs of soft tissue inflammation, and absence of mobility. Note the crater‐like bone defect. Etiological factor for late implant loss: peri‐implantitis