title: Post-operative hemimaxillectomy rehabilitation using prostheses supported by zygoma implants and remaining natural teeth.
abstract: This study aimed to evaluate the stability of prostheses supported by zygoma implants and remaining teeth for subjects who had undergone hemi-maxillectomy.
  Ten patients were included in the study. Oral rehabilitation was performed using a temporary prosthesis that was supported by remaining teeth for the first three months. Then, a zygoma implant was placed to provide support for a final prosthesis in addition to the remaining teeth. Each prosthesis was tailor-made according to biomechanical three-dimensional finite element analysis results. The patients were assessed using the prosthesis functioning scale of the Memorial Sloan-Kettering Cancer Center. In addition, retention and bite force were recorded for both the temporary prosthesis and the final prosthesis.
  The mean bite force of the prosthetic first molar was increased to 69.2 N. The mean retentive force increased to 13.5 N after zygoma implant insertion. The bite force on the prosthetic first molar was improved to 229.3 N.
  Bite force increased significantly with the support of a zygoma implant. The use of zygoma implants in the restoration of maxillary defects improved functional outcome and patient satisfaction.
authors.affiliation: Shanghai Ninth People's Hospital, Affiliated to Shanghai Jiao Tong University, Department of Oral Maxillofacial-Head & Neck Oncology, Shanghai, China.
authors.forename: Xing Zhou
authors.initials: XZ
authors.lastname: Qu
authors.affiliation: Shanghai Ninth People's Hospital, Affiliated to Shanghai Jiao Tong University, Department of Oral Maxillofacial-Head & Neck Oncology, Shanghai, China.
authors.forename: Ming Yi
authors.initials: MY
authors.lastname: Wang
authors.affiliation: Shanghai Ninth People's Hospital, Affiliated to Shanghai Jiao Tong University, Department of Oral Maxillofacial-Head & Neck Oncology, Shanghai, China.
authors.forename: Hui Shan
authors.initials: HS
authors.lastname: Ong
authors.affiliation: Shanghai Ninth People's Hospital, Affiliated to Shanghai Jiao Tong University, Department of Oral Maxillofacial-Head & Neck Oncology, Shanghai, China.
authors.forename: Chen Ping
authors.initials: CP
authors.lastname: Zhang
mesh_terms: D000328:Adult; D000368:Aged; D001732:Bite Force; D002294:Carcinoma, Squamous Cell / Q000601:surgery; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported / Q000379:methods*; D005260:Female; D020342:Finite Element Analysis; D006801:Humans; D008297:Male; D063175:Mandibular Reconstruction; D008437:Maxilla / Q000601:surgery*; D008441:Maxillary Neoplasms / Q000601:surgery; D008875:Middle Aged; D009065:Mouth Rehabilitation / Q000379:methods; D012516:Osteosarcoma / Q000601:surgery; D017060:Patient Satisfaction; D011184:Postoperative Period; D015203:Reproducibility of Results; D012189:Retrospective Studies; D016896:Treatment Outcome; D015050:Zygoma / Q000601:surgery*