Method and apparatus for preparing removable dental prosthesis

A method for manufacturing a removable dental prosthesis using a dental impression tray assembly, three-dimensional (3D) scanner, 3D design software, and a 3D printer, the method comprising:

• receiving dental impressions of a patient obtained using the dental impression tray assembly, the dental impressions including a bite registration and at least a mandibular impression or a maxillary impression;
• receiving information related to the patient's jaw relations obtained using the dental impression tray assembly, the jaw relations including a vertical dimension and a centric relation;
• receiving aesthetic figures including a teeth shade, a gum shade, or a lip length;
• scanning the received dental impressions with the 3D scanner to provide data representative of an edentulous shape of the patient;
• generating a 3D model of the dental prosthesis by incorporating the received information using the 3D design software;
• displaying the generated 3D model on a display;
• and
• 3D printing the dental prosthesis using the 3D printer according to the 3D model,
• wherein the dental impression tray assembly comprises:
• an upper tray configured to receive impression material for taking a first impression of the patient's gum and sized to be inserted into the patient's mouth;
• and
• a lower tray comprising:
• a first piece configured to receive impression material for taking a second impression of the patient's gum and sized to be inserted into the patient's mouth, wherein the first piece is curved at about a central portion to form a right end portion and a left end portion;
• and
• a pair of second pieces detachably coupled to the first piece, a right piece of the pair of second pieces coupled to the right end portion of the first piece and a left piece of the pair of second pieces coupled to the left end portion of the first piece.