“…The rapid resorption of CS cement does not provide the proper condition for bone regeneration, while calcium phosphate apatites or synthetic polymers such as PLLA resorb so slowly that replacement by new tissues is delayed. Thus, CS has been combined with other materials, including bone particles, tooth ash, synthetic polymers, and calcium phosphate apatites, to overcome the shortcomings of each individual material [1,2,4,6,19,[22][23][24].…”