Management of Hard Tissue Avulsive Wounds and Management of Orofacial Fractures
Rept. no. 3 (Annual), 1 Apr 1971-31 Mar 1972
BATTELLE COLUMBUS DIV OH
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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.
- Medical Facilities, Equipment and Supplies
- Ceramics, Refractories and Glass