To provide dental zirconia calcined bodies excellent in a feeling of translucence, which have suppressed decrease of translucency of calcined bodies at the time of the main calcination, even when polishing has been performed in the state of calcined bodies, have equivalent translucency to that when polishing is performed after the main calcination of a normal dental zirconia calcined body, and are useful as dental prostheses.SOLUTION: Provided is a dental zirconia calcined body in which a zirconia calcined body is impregnated with an impregnating material (Z), the impregnating material (Z) being an impregnating material that simultaneously satisfies the following (A) and (B), or water, (A) it is solid at 25°C； and (B) it has a boiling point not higher than the proper firing temperature of the zirconia calcined body.SELECTED DRAWING: None【課題】仮焼体状態での研磨を行った場合でも、本焼成を行った際に焼結体の透光性の低下が抑制され、通常の歯科用ジルコニア仮焼体を本焼成してから研磨した場合に比べ、同等の透光性が得られ、歯科用補綴物として有用な、透明感に優れた歯科用ジルコニア焼結体を提供すること。【解決手段】ジルコニア仮焼体に含浸物質（Ｚ）が含浸されており、前記含浸物質（Ｚ）が下記（Ａ）及び（Ｂ）（Ａ）２５℃で固体である；（Ｂ）沸点が該ジルコニア仮焼体の適正焼成温度以下である；を同時に満たす含浸材、又は水である、歯科用ジルコニア仮焼体。【選択図】なし
