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      Influence of surface characteristics on bone integration of titanium implants. A histomorphometric study in miniature pigs.

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          Abstract

          The purpose of the present study was to evaluate the influence of different surface characteristics on bone integration of titanium implants. Hollow-cylinder implants with six different surfaces were placed in the metaphyses of the tibia and femur in six miniature pigs. After 3 and 6 weeks, the implants with surrounding bone were removed and analyzed in undecalcified transverse sections. The histologic examination revealed direct bone-implant contact for all implants. However, the morphometric analyses demonstrated significant differences in the percentage of bone-implant contact, when measured in cancellous bone. Electropolished as well as the sandblasted and acid pickled (medium grit; HF/HNO3) implant surfaces had the lowest percentage of bone contact with mean values ranging between 20 and 25%. Sandblasted implants with a large grit and titanium plasma-sprayed implants demonstrated 30-40% mean bone contact. The highest extent of bone-implant interface was observed in sandblasted and acid attacked surfaces (large grit; HCl/H2SO4) with mean values of 50-60%, and hydroxylapatite (HA)-coated implants with 60-70%. However, the HA coating consistently revealed signs of resorption. It can be concluded that the extent of bone-implant interface is positively correlated with an increasing roughness of the implant surface.

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          Author and article information

          Journal
          J Biomed Mater Res
          Journal of biomedical materials research
          Wiley
          0021-9304
          0021-9304
          Jul 1991
          : 25
          : 7
          Affiliations
          [1 ] Department of Oral Surgery, School of Dental Medicine, University of Berne, Switzerland.
          Article
          10.1002/jbm.820250708
          1918105
          4b08ab98-eea3-497f-b210-a688539b240c
          History

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