title: [Clinical study of "All-on-4" implant immediate function in edentulous patients].
abstract: OBJECTIVE
  To evaluate the preliminary clinical results of application of All-on-4 immediate function in edentulous patients.
  
  
  METHODS
  Twenty nine edentulous patients with 140 immediately loaded implants supporting fixed complete-arch all-acrylic prostheses from April 2008 to October 2009 in Peking University School of Stomatology were included. The implant-supported fixed complete-arch all-acrylic prostheses were delivery on the operation day. At time of abutments connection, a panoramic radiograph was taken. And radiographic assessment of the marginal bone level was performed in every 2 months. Clinical observe items included marginal bone level, integrity of the restoration, survival of the implants and degree of satisfaction of the patients.
  
  
  RESULTS
  A total of 140 implants were immediate loading. Eight implants were lost during 6 - 8 weeks after immediate loading, giving survival rate of 94.3%. The marginal bone level was (0.8 ± 0.4) mm. The All patients were satisfied with the clinical results.
  
  
  CONCLUSIONS
  The data and the experience described in this study indicate that All-on-four immediate function technique can be a predictable technique for edentulous patients. Further study is needed to determine the long-term result of the technology.
authors.affiliation: Center of Dental Implantation, Peking University School, Beijing 100081, China.
authors.forename: Ping
authors.initials: P
authors.lastname: DI
authors.forename: Ye
authors.initials: Y
authors.lastname: Lin
authors.forename: Jian-hui
authors.initials: JH
authors.lastname: Li
authors.forename: Li-xin
authors.initials: LX
authors.lastname: Qiu
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
authors.forename: Hong-yan
authors.initials: HY
authors.lastname: Cui
mesh_terms: D000328:Adult; D000368:Aged; D015921:Dental Implants; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D057893:Immediate Dental Implant Loading / Q000379:methods*; D007575:Jaw, Edentulous / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009066:Mouth, Edentulous / Q000601:surgery*; D017060:Patient Satisfaction
chemical_list: D015921:Dental Implants