There are various problems associated with laboratory and clinical techniques when fabricating hollow maxillary obturator prostheses by the conventional method. This article introduces a new fabrication method that uses three-dimensional （3D） digital technology in order to overcome the problems. The 3D geometric data was obtained by means of 3D optical scanning of a plaster model with a maxillary defect and converted to stereo lithography （STL） data. The hollow obturator part was molded with a 3D printer （DIGITALWAX 020D）. The 3D mold of the obturator with a hollow was returned to the maxillary defect plaster model. The other part of the prostheses was made using the conventional method. The bond strength between the photocoagulation resin for 3D molding and polymerization resin was evaluated using the compressive shear strength test. The result showed enough strength for clinical use. As a result, the proposed method for fabricating hollow maxillary obturator prostheses using a 3D printer is applicable for clinical use.
