How does parafunctional habits lead to implant failure

Parafunctional habits like bruxism and clenching create mechanical and biological problems due to overloading and is considered to be one of the most common cuase of bone loss or lack of rigid fixation of the implant during the first year after implant placement. The condition needs to be identified during the diagnosis stage an emphasis should be placed on any toothwear, any fracture or crazing lines on the teeth, hypertonicity of masticatory musculature and features like accentuated antegonial notch on the panoramic radiograph.