A dental treatment assistance device includes a display, an input part into which input information on at least one of a use purpose and a use product is input, a memory that stores product information and process procedure information for a purpose of each product, a product information acquiring part that acquires the product information and the process procedure information corresponding to the input information input from the input part; and a display image control part that displays a predetermined process procedure selected from the process procedure information on the display.
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