You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass

    Hydroxylapatite-Coatings for Non-Precision Implant Placements

    Published: 01 January 1994

      Format Pages Price  
    PDF (188K) 14 $25   ADD TO CART
    Complete Source PDF (4.0M) 222 $65   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Ceramic hydroxylapatite (HA) coating results in faster bony adaptation, no fibrous tissue seams, firmer implant-bone attachment, decreased healing time, higher tolerance of surgical inaccuracies and an inhibition of ion release from the metallic substrate. In oral implantology, placement of dental implants in fresh tooth extraction sites is difficult, due to non-precision sites available for the implant placement. Upon tooth extraction, a superior void is created while the apical implant portion may be firmly seated. In orthopaedics, osteoporotic patients may not have total bony support for primary hip or knee placement and non-precision conditions may exist along much of the attachment area of a revision joint replacement. In-vivo studies of precision and not precisely placed HA-coated implants show that HA on a metallic implant device provides a mechanism for compensation, somewhat, for absence of a precision interference fit of the implant within the bone site. The coating acts as a substrate for bony proliferation and provides compensation for lack of direct bone contact leading to osseo-integration associated with metallic devices.


    hydroxylapatite coating, non-precision sites, revision surgery, dental implants

    Author Information:

    Kay, JF
    President/CEO, Bio-Interfaces, Inc., San Diego, CA

    Committee/Subcommittee: F04.13

    DOI: 10.1520/STP25190S