title: [Histological observation of implant-bone interface in immediate loading implant with platform switching].
abstract: OBJECTIVE
  To investigate the effect of implant superstructure with platform switching to the osseointegration of implant-bone interface in immediate loading.
  
  
  METHODS
  The bilateral mandiblular fourth premolars of 5 beagle dogs were extracted, and 3 months later, 10 implants were implanted and the abutments were accessed immediately to form immediate loading. Using self-control, the abutment with platform switching was used in the experimental side, and the traditional abutment used in the control side. The experimental animals were sacrificed after 3 months, and non-decalcified implant-bone sections were made.
  
  
  RESULTS
  A favorable osseointegration of implant-bone interface in 4 animals (8 implants) was observed except for one failed case. A large number of osteoblasts and different mineralized bone were observed. In experimental side, the bone and implant-neck were nearly in the same level, but the bone around the implant-neck was significantly absorbed in control side.
  
  
  CONCLUSIONS
  Using different superstructure in immediate loading could affect the osseointegration of implant-neck. The platform switching technology is conducive to the keeping of implant-neck bone.
authors.affiliation: Stomatology Center, Affiliate Haikou Hospital of Central South University Xiangya Medical School & Hainan Provincial Stomatology Center, Haikou 570208, China. hnxupu@163.com
authors.forename: Pu
authors.initials: P
authors.lastname: Xu
authors.forename: Shun
authors.initials: S
authors.lastname: Tan
authors.forename: Lu
authors.initials: L
authors.lastname: Xing
authors.forename: Xiao-quan
authors.initials: XQ
authors.lastname: Mao
authors.forename: Xuan
authors.initials: X
authors.lastname: Yang
authors.forename: Hua-fan
authors.initials: HF
authors.lastname: Huang
mesh_terms: D000818:Animals; D001641:Bicuspid; D001842:Bone and Bones; D015921:Dental Implants; D004285:Dogs; D008334:Mandible; D016348:Osseointegration
chemical_list: D015921:Dental Implants