title: [Clinical study of immediate post-extraction implant and immediate function in edentulous patients].
abstract: OBJECTIVE
  To evaluate the outcomes of immediate post-extraction implant and immediate function according to All-on-4 immediate concept in edentulous patients.
  
  
  METHODS
  The study included 46 patients with hopeless teeth. A total of 254 implants were immediately inserted after extraction and 56 fixed complete-arch all-acrylic prostheses finished and functioned on the day of extraction from June 2008 to March 2012 in Peking University School of Stomatology. At time of abutments connection, a panoramic radiograph was taken, and radiographic assessment of the marginal bone level was performed in every 6 months. Marginal bone level, integrity of the restoration, survival of the implants and degree of satisfaction of the patients were evaluated.
  
  
  RESULTS
  A total of 254 implants were immediate loading. Thirteen implants were lost 6 - 8 weeks after immediate loading and the survival rate of 94.9% (241/254). The marginal bone absorption was (0.7 ± 0.3) mm on average. All patients were satisfied with the clinical results.
  
  
  CONCLUSIONS
  Immediate post-extraction implant and immediate function technique can be a predictable technique. Further study is needed to determine the long-term results of the technology.
authors.affiliation: Department of Implant Dentistry, Peking University School and Hospital of Stomatology, 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: D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D006801:Humans; D007575:Jaw, Edentulous; D009066:Mouth, Edentulous
chemical_list: D015921:Dental Implants