Abstract
Freeze-dried crushed cortical bone allografts were implanted into widemouthed three-wall, two-wall, one-wall, combination, and furcation defects. One hundred eighty-nine sites were reentered in 97 patients and of these 60% had osseous regeneration of greater than 50%. A total of 231 sites were evaluated for pocket elimination, of which 63% demonstrated greater than 50% pocket reduction. This study presented additional evidence indicating that freeze-dried bone allografts have definite potential as grafting material in certain periodontal osseous defects. Information from additional cases is being tabulated as it becomes available and will supplement the current data.
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