The fibrous tissue interface (periodontal ligament) surrounding natural teeth acts as a viscoelastic shock absorber, serving to decrease the magnitude of stress to the bone. Compared with a tooth, the direct bone interface with an implant is not as resilient, so the energy imparted by an occlusal force is not dissipated rather transmits a higher-intensity force to the contiguous bone. The natural teeth and their periodontal ligament provide proprioception and early detection of occlusal loads and interferences. As a result, the bite forces used in mastication or parafunction can be of less magnitude. Hence the lack of proprioception can lead to a higher bite force on implant patients.
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