1. A denture occlusal wear evaluation method for evaluating a denture by a comparison between the denture before being used by a person and the denture after being used by the person, said wear evaluation method comprising: first receiving three dimensional data of the denture before use; first simulating movements of a jaw in an articulator with the three dimensional data of the denture before use so that a first set of values in the articulator are calculated, wherein the first set of values includes at least one of a distance between condyle paths, a distance between a maxillary dental arch and a mandibular dental arch, an inclination of a sagittal condylar path, an angle of a balancing side lateral condylar path, an amount of an immediate side shift, an angle of a working side lateral condylar path, an inclination of sagittal incisal path, and a guidance angle of a lateral incisal path; second receiving three dimensional data of the denture after use; second simulating movements of a jaw in an articulator with the three dimensional data of the denture after use so that a second set of values in the articulator are calculated, wherein the second set of values includes at least one of a distance between condyle paths, a distance between a maxillary dental arch and a mandibular dental arch, an inclination of a sagittal condylar path, an angle of a balancing side lateral condylar path, an amount of an immediate side shift, an angle of a working side lateral condylar path, an inclination of sagittal incisal path, and a guidance angle of a lateral incisal path; calculating differences between the first set of values and the second set of values; and displaying the calculated differences.