And at least one poly aryl ether ketone polymer [(PAEK) polymer], "Handbook of Chemistry and Physics", CRC Press, 64 th edition, the B-65~B-158 pp. at least one nitride (NI) and a polymer composition comprising the elements having defined is 1.3 to 2.5 in electronegativity ( ) [hereinafter, the composition (C)] of at least be prepared from 1 One of the prosthesis, including the parts.BACKGROUND少なくとも1つのポリアリールエーテルケトンポリマー[(PAEK)ポリマー]と、“Handbook of Chemistry and Physics”,CRC Press,64th edition,B-65~B-158頁に定義される1.3~2.5の電気陰性度(ε)を有する元素の少なくとも1つの窒化物(NI)とを含むポリマー組成物[以下、組成物(C)]から製造される少なくとも1つの部品を含む補綴具。【選択図】なし