A dental tray appliance system including a maxillary tray appliance and optionally a mandibular tray appliance. The maxillary tray appliance includes a first base portion, a first premolar tooth form, optionally a first contacting portion, optionally a contralateral first premolar tooth form, and optionally a central incisor tooth form. Each premolar tooth form has no lingual cusp as part of improvements in occlusal registration components. The mandibular tray appliance includes a second base portion, optionally a second contacting portion； and optionally a second bite material accepting portion.
