Patent ID: 8752777

Claim:
A method for preparing a pulverized product of an extracted tooth, the method comprising pulverizing the extracted tooth with a pulverizing apparatus to obtain a pulverized product of an extracted tooth, characterized in that: said pulverizing apparatus comprises a sealable pulverizing chamber and a freely rotating pulverizing blade having a pulverizing surface that collides with the extracted tooth within said pulverizing chamber for a pulverizing period to pulverize the extracted tooth, wherein at least an inner wall of said pulverizing chamber and said pulverizing blade are comprised of zirconia, and an extracted tooth is pulverized by said pulverizing apparatus together with pieces of physiological saline ice without liquefied nitrogen to obtain the pulverized product of the extracted tooth, wherein a total quantity of pieces of physiological saline for a single extracted tooth falls within a range of 10 to 40; and the pulverization period is selected so that the particle size of the pulverized product of extracted tooth falls within a range of 0.1 to 2.0 mm while avoiding denaturation of the extracted tooth and contamination of materials other than zirconia.