title: In vitro and in vivo studies of surface-structured implants for bone formation.
abstract: METHODS
  Micronanoscale topologies play an important role in implant osteointegration and determine the success of an implant. We investigated the effect of three different implant surface topologies on osteoblast response and bone regeneration. In this study, implants with nanotubes and micropores were used, and implants with flat surfaces were used as the control group.
  
  
  RESULTS
  Our in vitro studies showed that the nanostructured topologies improved the proliferation, differentiation, and development of the osteoblastic phenotype. Histological analysis further revealed that the nanotopology increased cell aggregation at the implant-tissue interfaces and enhanced bone-forming ability. Pushout testing indicated that the nanostructured topology greatly increased the bone-implant interfacial strength within 4 weeks of implantation.
  
  
  CONCLUSIONS
  Nanotopography may improve regeneration of bone tissue and shows promise for dental implant applications.
authors.affiliation: Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, PR China.
authors.forename: Lu
authors.initials: L
authors.lastname: Xia
authors.forename: Bo
authors.initials: B
authors.lastname: Feng
authors.forename: Peizhi
authors.initials: P
authors.lastname: Wang
authors.forename: Siyang
authors.initials: S
authors.lastname: Ding
authors.forename: Zhiyuan
authors.initials: Z
authors.lastname: Liu
authors.forename: Jie
authors.initials: J
authors.lastname: Zhou
authors.forename: Rong
authors.initials: R
authors.lastname: Yu
mesh_terms: D002460:Cell Line; D006801:Humans; D008422:Materials Testing; D008968:Molecular Conformation; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010006:Osteoblasts / Q000166:cytology* / Q000502:physiology*; D010012:Osteogenesis / Q000502:physiology*; D010316:Particle Size; D019736:Prostheses and Implants; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: C009495:titanium dioxide; D014025:Titanium