Occlusal state identifying method, occlusal state identifying apparatus, and storage medium

An occlusal state identifying apparatus comprising:

• a memory;
• and
• a processor coupled to the memory and configured to:
• obtain maxillary shape data and mandibular shape data,
• arrange a maxillary image including a plurality of maxillary teeth corresponding to the obtained maxillary shape data and a mandibular image including a plurality of mandibular teeth corresponding to the obtained mandibular shape data such that corresponding a center of gravity of corresponding predetermined teeth match each other,
• define a state where maxillary teeth included in the maxillary image, which has fallen naturally, collide with mandibular teeth included in the mandibular image and stop, by executing a dynamic simulation based on the arranged maxillary image and the arranged mandibular image, and
• identify a positional relationship between the maxillary image and the mandibular image obtained by the defined state as a positional relationship corresponding to an occlusal state of the maxillary teeth included in the maxillary image and the mandibular teeth included in the mandibular image.

A non-transitory computer-readable storage medium storing a program that causes a processor included in an occlusal state identifying apparatus to execute a process, the process comprising:

• obtaining maxillary shape data and mandibular shape data;
• arranging a maxillary image including a plurality of maxillary teeth corresponding to the obtained maxillary shape data and a mandibular image including a plurality of mandibular teeth corresponding to the obtained mandibular shape data such that a center of gravity of corresponding predetermined teeth match each other;
• defining a state where maxillary teeth included in the maxillary image, which has fallen naturally, collide with mandibular teeth included in the mandibular image and stop, by executing a dynamic simulation based on the arranged maxillary image and the arranged mandibular image;
• and
• identifying a positional relationship between the maxillary image and the mandibular image obtained by the defined state as a positional relationship corresponding to an occlusal state of the maxillary teeth included in the maxillary image and the mandibular teeth included in the mandibular image.