Success and failure of experimental active glasses in periodontal disease repair

Four different ceramic materials, both inert and active, used in granule form for bone repair, were implanted in two sheep's jaws. After 3 months from the implant, the behaviour of the materials was studied by means of SEM and X-ray microprobe on thick sections of the embedded undecalcified jaws. The unexpected success of the inert materials and the failure of the used bioactive glass opens the problem of the calibration of the degradation parameters that must be evaluated both on the massive material and also on the granules or powders.