title: [Analysis of apposition on differently treated implant surface at early stage of implantation].
abstract: To compare the surface apposition and the bone response at early period of implantation in two differently treated implants.
  
  
  
  The implants were subject to double acid-etched-H2O2/HCl-heat treatment and double acid-etching treatment, and then randomly implanted into the tibia of rabbits. After 2, 4, 8 weeks of follow up, the bone specimens containing implants were prepared and examined by a field emission SEM and EDX.
  
  
  
  A layer rich with calcium and phosphorus was clearly demonstrated on the implants surface of both groups after 2 weeks of implantation, but it was mostly disappeared after 4 weeks. There were large amounts of osteoblasts cells on double acid-etched-H2O2/HCl-heat treated implants surface indicating the initiation of osteogenesis. After 8 weeks of implantation some new bones were attached on the implants surface in both groups, more bones attached were shown on double acid-etched- H2O2/HCl-heat treated implants surface.
  
  
  
  A calcium and phosphorus-rich layer was formed on the implants surface of both groups at early period of implantation.
authors.affiliation: The Affiliated Stomatology Hospital, College of Medicine, Zhejiang University, Hangzhou 310006, China.
authors.forename: Fu-ming
authors.initials: FM
authors.lastname: He
authors.forename: Song
authors.initials: S
authors.lastname: Chen
authors.forename: Shan-shan
authors.initials: SS
authors.lastname: Zhao
mesh_terms: D000818:Animals; D003757:Dental Implantation; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry*; D017267:Dental Prosthesis Design; D006861:Hydrogen Peroxide / Q000737:chemistry; D016348:Osseointegration / Q000502:physiology; D010012:Osteogenesis / Q000502:physiology*; D011817:Rabbits; D013499:Surface Properties; D013977:Tibia / Q000601:surgery / Q000648:ultrastructure; D014025:Titanium / Q000737:chemistry*
chemical_list: D015921:Dental Implants; D003764:Dental Materials; D006861:Hydrogen Peroxide; D014025:Titanium