Dental-treatment index, dental-treatment index fixing holder, dental-treatment set, method for generating three-dimensional data of dental-treatment index, and data for preparing dental-treatment index

A dental treatment set, comprising:

• a dental treatment index composed of a light-transmissive material, the dental treatment index comprising:
• two fixing outer surfaces;
• and
• a tooth-shaped hole provided in an inner surface between the two fixing outer surfaces.
• wherein guide portions are provided on the fixing outer surfaces, respectively;
• and
• a dental treatment index fixing holder composed of a light-transmissive material, the dental treatment index comprising:
• two holder side portions connected to each other,
• wherein counter guide portions are provided on fixing inner surfaces of the two holder side portions, the fixing inner surfaces facing each other,
• wherein, when a distance between fixing inner surface upper portions other than portions where the counter guide portions are provided on the two fixing inner surfaces of the dental treatment index fixing holder is defined as d4, and a distance between fixing outer surface upper portions other than portions where the guide portions are provided on the two fixing outer surfaces of the dental treatment index is defined as d3, the relationship is d3<d4.

A dental treatment index three-dimensional data generation method, comprising:

• a pre-restoration tooth shape imaging step of capturing a pre-restoration tooth shape image;
• a pre-restoration tooth shape three-dimensional data generation step of creating pre-restoration tooth shape three-dimensional data based on the pre-restoration tooth shape image;
• a target tooth shape three-dimensional data generation step of creating target tooth shape three-dimensional data of a target shape to be formed after restoration, based on the pre-restoration tooth shape three-dimensional data;
• and
• a dental treatment index three-dimensional data generation step of creating three-dimensional data of a dental treatment index, the dental treatment index including two fixing outer surfaces, guide portions provided on the respective fixing outer surfaces, and a tooth-shaped hole corresponding to the target tooth shape formed in an inner surface between the two fixing outer surfaces, based on the target tooth shape three-dimensional data.