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.
