a first operation of preparing a general-purpose wax bite formed of paraffin wax corresponding to a preset standard dental arch profile, wherein the general-purpose wax bite is configured to be disposed between an implantation target portion and a matching target portion and comprises a variable shape-matching portion corresponding to the implantation target portion and a pressing protrusion integrally formed with the variable shape-matching portion, wherein the variable shape-matching portion is configured to be softened when heated to a temperature higher than or equal to a preset temperature, wherein the pressing protrusion is protruded to correspond to the matching target portion, and is configured to be softened when heated to a temperature higher than or equal to a preset temperature, and wherein the general-purpose wax bite is provided with an interdentium corresponding portion representing an alignment marker configured to be aligned to a preset visible reference indicator formed as an interdentium between residual teeth on any one side of the implantation target portion and the matching target portion;

a second operation of obtaining a plurality of scanned images of the implantation target portion and the matching target portion before and after installation in a state where inner and outer surface portions of the heated general-purpose wax bite are corrected by occlusal pressure in consideration of an occlusal vertical dimension of a person to be treated and a computerized tomography (CT) image of an oral cavity occluded with the general-purpose wax bite through an image capturing device and transmitting the plurality of scanned images and the CT image;

a third operation of generating an integrated scanned image by aligning the plurality of scanned images to correspond to the occlusal vertical dimension while a three-dimensional planning image is generated by overlapping and matching the integrated scanned image with the CT image on the basis of a common part therebetween; and

a fourth operation of generating design information of a dental restoration in consideration of the occlusal vertical dimension on the basis of the three-dimensional planning image while the design information of the dental restoration is transmitted to a manufacturing device so that the dental restoration is manufactured,

wherein in the second operation, the general-purpose wax bite is heated to the temperature higher than or equal to the preset temperature to be softened to have lower strength than the implantation target portion and the matching target portion, and the general-purpose wax bite is pressurized to be shaped in an aligned state using the interdentium corresponding portion so that a distance between the implantation target portion and the matching target portion corresponds to the occlusal vertical dimension,

wherein the variable shape-matching portion having a margin exceeding a width of a standard gingival portion is corrected to correspondingly shape-match with an outer surface profile of the implantation target portion and formed to a shape-matching correction portion and the pressing protrusion is corrected to correspondingly occlude with the matching target portion and formed to an occlusal correction portion,

wherein in the second operation, the plurality of scanned images comprise:

a first scanned image of the inner and outer surface portions of the general-purpose wax bite corrected so that an interval from the shape-matching correction portion to the occlusal correction portion corresponds to a preset vertical dimension;

a second scanned image of an outer surface of the matching target portion; and

a third scanned image of outer surfaces of the implantation target portion and the matching target portion which are occluded with the general-purpose wax bite,

wherein in the third operation, the first scanned image is swapped so that a boundary lines are set along outer edges of three-dimensional surface information of the shape-matching correction portion and three-dimensional surface information of the occlusal correction portion of the general-purpose wax bite; a space between the boundary lines of the three-dimensional surface information of the shape-matching correction portion and the three-dimensional surface information of the occlusal correction portion is set to be a deletion area and deleted; and the boundary line of the three-dimensional surface information of the shape-matching correction portion is exposed to be convex toward the matching target portion.