pH BUFFERED BIOACTIVE GLASS, AND ITS PREPARATION PROCESS AND USE

10:

• A pH buffered bioactive glass, characterized in that said pH buffered bioactive glass is a composition A comprising a bioactive glass and solid acidic particles, or a composition B comprising a bioactive glass and a Tris buffer solution, wherein said bioactive glass comprises SiO2, CaO, Na2O and P2O5 as the raw materials, the content of each raw material in said composition A is measured by “part by mass”, and the content of each raw material in said composition B is measured by “gram per 100 ml of Tris”,
• Composition A:
• SiO2-40 to 60;
• CaO-15 to 30;
• Na2O-15 to 30;
• P2O5-2 to 8;
• Solid acidic particles-3 to 7;
• Composition B:
• SiO2-0.0003 to 22.5 g;
• CaO-0.0001 to 12.25 g;
• Na2O-0.0001 to 12.25 g;
• P2O5-0.00004 to 3 g based on 100 ml of the Tris buffer solution,
• wherein the pH thereof is finally adjusted to 8.0±0.3.

16:

• A method for preparing the pH buffered bioactive glass according to claim 10, comprising:
• 1) a step of melting said raw materials in said ratios at high temperature to form a bioactive glass;
• and
• 2) a step of evenly mixing the above-obtained bioactive glass with the solid acidic particles (composition A) in said ratio, or the Tris buffer solution (composition B) in said ratio to obtain said pH buffered bioactive glass.

17:

• A method for preparing the pH buffered bioactive glass according to claim 11, comprising:
• 1) a step of melting said raw materials in said ratios at high temperature to form a bioactive glass;
• and
• 2) a step of evenly mixing the above-obtained bioactive glass with the solid acidic particles (composition A) in said ratio, or the Tris buffer solution (composition B) in said ratio to obtain said pH buffered bioactive glass.

18:

• A method for preparing the pH buffered bioactive glass according to claim 12, comprising:
• 1) a step of melting said raw materials in said ratios at high temperature to form a bioactive glass;
• and
• 2) a step of evenly mixing the above-obtained bioactive glass with the solid acidic particles (composition A) in said ratio, or the Tris buffer solution (composition B) in said ratio to obtain said pH buffered bioactive glass.

19:

• A method for preparing the pH buffered bioactive glass according to claim 13, comprising:
• 1) a step of melting said raw materials in said ratios at high temperature to form a bioactive glass;
• and
• 2) a step of evenly mixing the above-obtained bioactive glass with the solid acidic particles (composition A) in said ratio, or the Tris buffer solution (composition B) in said ratio to obtain said pH buffered bioactive glass.

20:

• A method for preparing the pH buffered bioactive glass according to claim 14, comprising:
• 1) a step of melting said raw materials in said ratios at high temperature to form a bioactive glass;
• and
• 2) a step of evenly mixing the above-obtained bioactive glass with the solid acidic particles (composition A) in said ratio, or the Tris buffer solution (composition B) in said ratio to obtain said pH buffered bioactive glass.

21:

• A method for preparing the pH buffered bioactive glass according to claim 15, comprising:
• 1) a step of melting said raw materials in said ratios at high temperature to form a bioactive glass;
• and
• 2) a step of evenly mixing the above-obtained bioactive glass with the solid acidic particles (composition A) in said ratio, or the Tris buffer solution (composition B) in said ratio to obtain said pH buffered bioactive glass.