Method and device for processing three-dimensional oral cavity model and computer-readable recording medium

A non-transitory computer-readable recording medium having recorded thereon a program including at least one instruction for performing a method of processing a three-dimensional (3D) intraoral model by a computer, the method comprising:

• obtaining a tooth model and a gingival model from the 3D intraoral model;
• deforming the gingival model by reflecting an amount of movement of gingiva according to a displacement indicating movement of one or more teeth included in the tooth model;
• obtaining a final gingival model by suppressing, using one or more control factors, at least a part of the displacement indicating movement of the teeth from being reflected in the amount of movement of the gingiva;
• and
• displaying, on a display, the obtained final gingival model together with a final tooth model representing movement of the one or more teeth included in the tooth model,
• wherein the obtaining of the final gingival model using the control factors comprises at least one of:
• reducing a rotation transformation component having an occlusal direction as an axis in the displacement indicating movement of the teeth,
• suppressing distortion in a space surrounding the 3D intraoral model by placing one or more stabilizers in the space surrounding the 3D intraoral model, or
• suppressing distortion of a bottom of the gingiva by performing base-fixing on at least a portion of the amount of movement of the gingiva.

A method of processing a three-dimensional (3D) intraoral model in a data processing apparatus, the method comprising:

• obtaining a tooth model and a gingival model from the 3D intraoral model;
• deforming the gingival model by reflecting an amount of movement of gingiva according to a displacement indicating movement of one or more teeth included in the tooth model;
• obtaining a final gingival model by suppressing, using one or more control factors, at least a part of the displacement indicating movement of the teeth from being reflected in the amount of movement of the gingiva;
• and
• displaying, on a display, the obtained final gingival model and a final tooth model representing movement of the one or more teeth included in the tooth model,
• wherein the obtaining of the final gingival model using the control factors comprises at least one of:
• reducing a rotation transformation component having an occlusal direction as an axis in the displacement indicating movement of the teeth,
• suppressing distortion in a space surrounding the 3D intraoral model by placing one or more stabilizers in the space surrounding the 3D intraoral model, or
• suppressing distortion of a bottom of the gingiva by performing base-fixing on at least a portion of the amount of movement of the gingiva.