A method for the preparation of bone gel and bone putty which comprises
producing a viscous supernatant by dissolving demineralized bone matrix in
water or a solution comprising water and at least one component normally
found in human blood serum, at a temperature above about 25.degree. C.
Agitation and/or ultrasound or pressure accelerates dissolution of the
demineralized bone. The resulting viscous supernatant is cooled, then
mixed with demineralized or non-demineralized bone matrix particles to
form a gel-like suspension or putty-like material.