Calcium aluminate based paste for stabilizing dental implants and restoring tissue attachment after surgery and methods therefore

A method of preparing an implant suitable for implantation into low quality bone tissue comprising the following steps:

• providing a powder comprising a powdered cement and optionally, inert filler particles, which cement is based on calcium aluminate;
• providing an aqueous hydration liquid containing LiCl;
• and
• mixing the powdered cement and hydration liquid so as to form a paste;
• characterized in the further step of
• applying the paste thus formed to a surface of an implant, which surface is to be in contact with bone tissue, and in that the calcium aluminate consists of particles of the phases CA and/or C12A7, and optionally C3A, wherein the cement may additionally comprise the calcium silicate phase C3S, and wherein the combined amounts of any C3A and C3S present do not exceed 10% by weight of the cement, and in a mean particle size of the powdered cement within the interval of 2-7 μm, and in that the powder to liquid ratio is within the range of 2.0:1 to 5.0:1.

A method of implantation, which method is suitable for implanting a dental implant into low quality bone tissue comprising the following steps:

• providing a powder comprising a powdered cement and optionally, inert filler particles, which cement is based on calcium aluminate;
• providing an aqueous hydration liquid containing LiCl;
• and
• mixing the powdered cement and hydration liquid so as to form a paste;
• also comprising the further steps of
• applying the paste to a surface of an implant, which surface is to be in contact with bone tissue, and/or filling the paste into a pre-drilled hole in the bone tissue into which hole the implant is to be inserted;
• and
• implanting the coated implant into the bone tissue;
• wherein the calcium aluminate consists of particles of the phases CA and/or C12A7, and optionally C3A, wherein the cement may additionally comprise the calcium silicate phase C3S, and wherein the combined amounts of any C3A and C3S present do not exceed 10% by weight of the cement, and wherein the powdered cement exhibit a mean particle size within the interval of 2-7 μm, and the powder to liquid ratio is within the range of 2.0:1 to 5.0:1.

A method of in situ re-stabilizing an existing implant in bone tissue in a subject, which method is suitable for re-stabilizing a dental implant in low quality bone tissue, comprising the following steps:

• providing a powder comprising a powdered cement and optionally, inert filler particles, which cement is based on calcium aluminate;
• providing an aqueous hydration liquid containing LiCl;
• and
• mixing the powdered cement and hydration liquid so as to form a paste;
• also comprising the further step of
• applying the paste to a surface of an existing implant in need of re-stabilization in bone tissue in a subject, which surface is to be in contact with bone tissue;
• wherein the calcium aluminate consists of particles of the phases CA and/or C12A7, and optionally C3A, wherein the cement may additionally comprise the calcium silicate phase C3S, and wherein the combined amounts of any C3A and C3S present do not exceed 10% by weight of the cement, and wherein the powdered cement exhibit a mean particle size within the interval of 2-7 μm, and the powder to liquid ratio is within the range of 2.0:1 to 5.0:1.