Provided is a denture block capable of integrally and easily producing a denture by utilizing a CAD / CAM system. A denture block in which a denture portion 1b is formed in the upper and lower central portions of a side surface 1a of a cylinder 1 and a denture portion is manufactured by cutting with a CAD / CAM system while the ridge portion 1b is gripped. The upper part is the white part 2 which is the tooth part of the denture, the lower part is the gingival color part 3 which is the denture base part of the denture, and the white part 2 and the gingival color part 3 are integrally in close contact with each other including the inside. Along with the formation, a plurality of convex portions 4 and concave portions 5 are formed on the upper surface 3a, which is the interface between the gingival color portion 3 and the white portion 2.ＣＡＤ／ＣＡＭシステムを利用して、義歯を一体的且つ簡便に作製することができる義歯用ブロックを提供する。 円柱１の側面1aの上下中央部に突条部1bが形成されていて、突条部1bが把持された状態でＣＡＤ／ＣＡＭシステムによって切削加工され義歯が作製される義歯用ブロックであって、上部を義歯の歯部分となる白色部２に、下部を義歯の義歯床部分となる歯肉色部３とし、白色部２と歯肉色部３とを内部も含め隙間なく密着した状態で一体的に形成すると共に、歯肉色部３の白色部２との境界面である上面3aに、凸部４と凹部５とを複数形成する。
