The Use of Bisphosphonate-Hydroxyapatite Composite in Bone Augmentation
A good bone augmentation and regeneration depends essentially on the use of a high biomimetic hydroxyapatite, respectively of an osteoclast apoptosis promoting compound. The last one, used in oral or injectable form, leads to different gastrointestinal side effects. We suggested and studied, at non-clinical level, a composite of sodium alendronate linked on a biogene hydroxyapatite. The composite was obtained by putting an aqueous solution of alendronate into a suspension of hydroxyapatite in acetone. By physico-chemical methods the binding of alendronate (ALE) on hydroxyapatite was proved, the content of ALE in the composite being 22%. The patients can benefit from this composite due to a total elimination of gastrointestinal side effects as a consequence of limiting the bioactivity only locally.