Post-osseointegration biological failure of dental implant

**Inclusion terms:** - Failure of dental implant due to lack of attached gingiva - Failure of dental implant due to occlusal trauma (caused by poor prosthetic design) - Failure of dental implant due to parafunctional habits - Failure of dental implant due to periodontal infection (peri-implantitis) - Failure of dental implant due to poor oral hygiene - Iatrogenic post-osseointegration failure of dental implant - Post-osseointegration failure of dental implant due to complications of systemic disease