Geistlich Pharma Ag

Paul Buxton

Daniel Suppiger

Nino Kurz

A dried implant composition for preparing an injectable aqueous implant formulation that is extrudable through a tapering system and a gauge 18 cannula, including a mixture of nanocrystalline hydroxyapatite particles derived from natural bone having a size of 50 to 200 &#x3bc;m and fragments of naturally crosslinked fibrous collagen material that pass through a 0.5 mm sieve; an injectable aqueous implant formulation, wherein the injectable aqueous implant formulation is obtainable by hydration and homogeneous mixing; a process for preparing the injectable aqueous implant formulation; and a kit for preparing the injectable aqueous implant formulation.

Dried implant composition and injectable aqueous implant formulation

An injectable aqueous implant formulation, and processes for making and using the formulation, wherein the injectable aqueous implant formulation has been sterilized by gamma-ray or X-ray-irradiation and can be extruded through a tapering system and an 18 gauge (0.838 mm inner diameter) 25.4 mm long cannula with a force not exceeding 60 N, which comprises 25-45 w/w % of a mixture of nanocrystalline hydroxyapatite particles derived from natural bone having a size of 50 to 200 &#x3bc;m as determined by sieving and fragments of naturally crosslinked fibrous collagen material that pass through a 0.5 mm sieve, whereby the w/w ratio of nanocrystalline hydroxyapatite to collagen is from 1.8 to 4.5, which contains at least 0.05% (w/w) ascorbic acid.

Injectable aqueous implant formulation containing ascorbic acid

A dried implant composition for preparing an injectable aqueous implant formulation that is extrudable through a tapering system and a gauge 18 cannula, including a mixture of nanocrystalline hydroxyapatite particles derived from natural bone having a size of 50 to 200 &#x3bc;m and fragments of naturally crosslinked fibrous collagen material that pass through a 0.5 mm sieve; an injectable aqueous implant formulation for use in a method of oral tissue regeneration, wherein the injectable aqueous implant formulation is obtainable by hydration and homogeneous mixing; a process for preparing the injectable aqueous implant formulation; and a kit for preparing the injectable aqueous implant formulation for use in oral tissue regeneration.

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Lucerne, Switzerland

Paul Buxton