**8.9 Overload**

Clinical signs of occlusal overloads, such as abutment fracture, loss of retention and/or signs of abrasive forces on supra-structures, seem to be an indirect but potential risk. The factors related to occlusal overload are probably related to the location of the implant, the deviation of the axis of the implant, and the incompatibility of the implant dimensions and the prosthesis. Occlusal overload can lead to bone loss around the osseointegrated implants [4]. However, the evidence is limited concerning overload and its influence on the onset or progression of peri-implantitis [41, 62]. In a dog model, occlusal overload did not induce marginal bone loss in implants with a healthy mucosa [63].

**Figure 4.** *Platform switching to prevent marginal bone loss and peri-implantitis.*
