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Facial skeletal augmentation using hydroxyapatite cement

M L Shindo1, P D Costantino, C D Friedman

  • 1Department of Otolaryngology, Head and Neck Surgery, University of Southern California, Los Angeles 90033-4605.

Archives of Otolaryngology--Head & Neck Surgery
|February 1, 1993
PubMed
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This study shows hydroxyapatite cement is effective for facial bone augmentation in dogs. When placed directly on bone, it integrates well, offering a promising option for craniofacial reconstruction.

Area of Science:

  • Biomaterials Science
  • Craniofacial Surgery
  • Regenerative Medicine

Background:

  • Calcium phosphate cements are utilized for bone regeneration.
  • Microporous hydroxyapatite offers potential for bone augmentation.
  • Facial bone defects require effective augmentation materials.

Purpose of the Study:

  • To evaluate a novel calcium phosphate cement for craniofacial bone augmentation.
  • To compare direct bone placement versus collagen tubule containment for hydroxyapatite cement.
  • To assess the osseointegration and stability of the cement in vivo.

Main Methods:

  • Six dogs underwent bilateral supraorbital ridge augmentation using hydroxyapatite cement.
  • Cement was placed directly onto bone or within a collagen membrane tubule.

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  • Histological analysis was performed at 3, 6, and 9 months post-implantation.

    • Main Results:

    • All implants maintained augmented height without extrusion or migration.
    • Direct bone placement led to progressive osseointegration and no volume loss.
    • Collagen tubule placement resulted in fibrous union but solid bone bonding without resorption.

    Conclusions:

    • Hydroxyapatite cement is a viable material for experimental craniofacial augmentation.
    • Direct placement promotes superior osseointegration compared to collagen tubule containment.
    • The cement shows potential for human craniofacial reconstructive applications.