Abstract: The invention relates to a biomaterial for bony or dental fillings on the basis of apatite. It provides a biomaterial having antiseptic properties for limiting the proliferation of microorganisms at the site of implantation. The biomaterial according to the invention is based on calcium oxygenated phosphate having an apatitic structure which has oxygenated species with degrees of oxidation greater than or equal to -2. This biomaterial brings together with the antiseptic properties mentioned above an excellent biocompatibility, a very low solutility and good qualities of osteo-induction.

Abstract: A dynamic procedure to measure the movability of teeth wherein a given motion is applied to a tooth to cause a displacement and wherein the average displacement rate of the tooth is measured. The instrument implementing this procedure comprises means (4-8) for generating the given motion, means for releasing said given motion, (10-12), and means (13) for transmitting this given motion to the tooth. The tooth displacement is measured by a magnetic pickup (14) emitting an electric signal representing the tooth displacement to an electronic data-processing and display circuit.