preferred_name: Failure of dental implant due to periodontal infection (peri-implantitis)
preferred_name_lc: failure of dental implant due to periodontal infection (peri-implantitis)
label: Failure of dental implant due to periodontal infection (peri-implantitis)
label_lc: failure of dental implant due to periodontal infection (peri-implantitis)