Dental implant expert Dr. Hendriks discusses common All on 4 dental implant failures when designing the all on 4 bridge. So many patients end up with teeth that will fail long term due to the design of the all on 4 implant bridge. Dental implants need daily cleaning and hygiene attention but because doctors get work back from technicians that don't have the proper education, patients leave with dental implant bridges that will have problems and ultimately fail.