The present invention provides the following: a maxilla reference dental plate configured so that if the length of a line segment PQ which connects a point P corresponding to the left-side pterygomaxillary notch at the plate rear-edge and a point Q corresponding to the right-side pterygomaxillary notch at the plate rear-edge is 1, the length of a line segment OM which connects a point O corresponding to the maxillary labial frenulum at the exact middle of the lip-side plate edge and a median point M of the line segment PQ is 0.76-0.98； and a mandible reference dental plate characterized by being configured so that if the length of a line segment pq which connects a point p corresponding to the left-side retromolar pad at the plate rear-edge and a point q corresponding to the right-side retromolar pad at the plate rear-edge is 1, the length of a line segment om which connects a point o corresponding to the inferior labial frenulum at the exact middle of the lip-side plate edge and a median point m of the line segment pq is 0.74-0.94.
