A tetracalcium phosphate (TTC P) particle for use in preparing a
fast-setting, bioresorbable calcium phosphate cement is disclosed. The
TTCP particle has a basic calcium phosphate whiskers or fine crystals on
a surface thereof; the basic calcium phosphate whiskers or fine crystals
having a Ca/P molar ratio greater than 1.33, and having a length up to
about 5000 nm and a width up to about 500 nm.