Accession Number:

AD0752124

Title:

Management of Hard Tissue Avulsive Wounds and Management of Orofacial Fractures

Descriptive Note:

Rept. no. 3 (Annual), 1 Apr 1971-31 Mar 1972

Corporate Author:

BATTELLE COLUMBUS DIV OH

Report Date:

1972-10-01

Pagination or Media Count:

46.0

Abstract:

Studies were carried out to select, develop, and characterize porous calcium phosphate materials for implant evaluation as resorbable ceramics for use in the repair of maxillofacial bone defects. Also, protein-impregnated and untreated nonresorbable ceramics were prepared for implant evaluation. Porous tricalcium phosphate ceramics with good distribution and uniformity of large pores were developed. These materials were prepared by conventional sintering isostatically compacted masses consisting of laboratory-prepared calcium phosphate powders and sized naphthalene as the pore-forming additive. Studies were conducted at the U. S. Army Institute of Dental Research, using small 2-mm- diameter by 2-mm-long porous tricalcium phosphate specimens implanted in the tibia of rats. These were found to be well tolerated, rapidly invaded by new bone, gradually resorbed, and replaced by remodelling bone over a period of about 8 weeks. In addition, larger pieces of the material were used to successfully augment alveolar ridge defects in dogs.

Subject Categories:

  • Medical Facilities, Equipment and Supplies
  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE