PROBLEM TO BE SOLVED: To provide a standard denture base or a standard denture which is a ready-made standard denture base or a ready-made standard denture adaptable to many patients in which a prescribed shaped denture base is included and an artificial tooth is arranged at a prescribed position.SOLUTION: A denture is prepared by using an upper jaw standard denture base 100 and a lower jaw standard denture base 200. The upper jaw standard denture base 100 is configured such that a length of a line segment for connecting a point O corresponding to an upper lip frenulum equivalent to the midline of a labial denture border with a midpoint of a line segment is 0.76-0.98, when the length of the line segment for connecting a point P corresponding to a left pterygoid upper jaw notch of a posterior border with a point corresponding to a right pterygoid upper jaw notch thereof is assumed as 1 in which an artificial tooth is arranged at a prescribed position of the upper jaw standard denture base 100. The lower jaw standard denture base 200 is configured such that a length of a line segment for connecting a point o corresponding to a lower lip frenulum equivalent to the midline of the labial denture border with a midpoint of a line segment is 0.76-0.94, when the length of the line segment for connecting a point p corresponding to a left retromolar pad of the posterior border with a point corresponding to a right retromolar pad thereof is assumed as 1 in which an artificial tooth is arranged at a prescribed position of the lower jaw standard denture base 200.SELECTED DRAWING: Figure 1【課題】多くの患者に適合可能な既製の基準義歯床又は基準義歯であって、所定の形状の義歯床を有するとともに、所定の位置に人工歯が配列されている基準義歯床又は基準義歯を提供する。【解決手段】床後縁の左側翼突上顎切痕に相当する点Ｐと右側翼突上顎切痕に相当する点とを結ぶ線分の長さを１とした場合、唇側床縁の正中にあたる上唇小帯に相当する点Ｏと線分の中点とを結ぶ線分の長さが０．７６～０．９８である上顎基準義歯床１００であって、人工歯が所定の位置に配列されて成る上顎基準義歯床１００と、床後縁の左側臼後隆起に相当する点ｐと右側臼後隆起に相当する点とを結ぶ線分の長さを１とした場合、唇側床縁の正中にあたる下唇小帯に相当する点ｏと線分の中点とを結ぶ線分の長さが０．７６～０．９４である下顎基準義歯床２００であって、人工歯が所定の位置に配列されて成る下顎基準義歯床２００と、と用いて義歯を作製する。【選択図】図１
