Histomorphometric evaluation of extraction sockets and deficient alveolar ridges treated with allograft and barrier membrane: a pilot study.

摘要: The aim of the study was to determine fate demineralized freeze-dried bone allograft (DFDBA) used in conjunction with a barrier membrane management extraction sockets and deficient alveolar ridges, compare amount formed that found untreated sites. Ten biopsies were obtained from 8 grafted patients. Five harvested sites during routine implant placement analyzed for comparison. In socket procedure, DFDBA packed tightly into covered an expanded polytetrafluoroethylene (e-PTFE) membrane. Primary closure achieved all cases. ridge regeneration cortical columns placed projecting outward approximately 3 mm create maintain space particles between them; then by e-PTFE Healing time ranged 23 months. At placement, cores (7 x 2 mm) harvested, fixed 10% formalin solution, prepared histologic examination. light microscopic level, no inflammation or fibrous encapsulation observed. New formation on around widespread. Histomorphometric analysis specimens carried out using trabecular volume (TBV) index. TBV maxillary test 55.03%, as compared 57.33% control cores. Unaltered made up 8.7% specimens. mandibular biopsies, 56.6%, while controls it 40.9%. still present 2.45%. results tended indicate treatment cell occlusive membranes will result new formation, predominantly process conduction, which appears be similar nature healed nonfunctional edentulous areas.