Peri-implantitis (5-12% after 10 years) caused by poor oral hygiene. Overloading leads to bone loss around implants (patients with bruxism). Technical complications: screw fracture (3-7%), ceramic fracture (2-5%). Cement residue on cemented bridges causes inflammation. An incorrect occlusion accelerates wear of the opposing teeth. Allergic reactions to titanium are rare (<0.1%). Early failure due to inadequate osseointegration (1-3% of cases). X-ray check-ups (annually) detect problems early. Night guards reduce the risks for people who grind their teeth. Professional dental cleaning every 3-6 months is preventive.
Implants - Other Aspects
What are the risks of partial implant-supported bridges?
Peri-implantitis, screw fracture and overloading are the main risks.

