New putty composite materials for bone defects in dentistry

摘要

Two types of composite materials for bone repair were produced at Imperial College of London, one of Bioglass~circleR dextran resorbable matrix and the second of Bioglass~circleR and a non resorbable polysulphone polymer matrix. Three samples of the first and a fourth sample of the second were sterilized and implanted in drilled holes in a sheep's mandible and also in tibial defects. After 3 months the materials with the surrounding tissues were explanted, fixed and radiographed in order to have the macroscopic relationship between the material and bone. Sections were prepared for scanning electron microscopic observations and X-ray microanalyses to detect any resorption of the materials and the interface developed with bone.