Comparative study on castability of a new lost-wax casting process using 3D printer and a conventional method

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  • Takada Hajime
    Division of Comprehensive Dentistry, Tohoku University Graduate School of Dentistry
  • Kanetaka Hiroyasu
    Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry Department of Advanced Dental Science and Technology, Tohoku University Graduate School of Biomedical Engineering
  • Nunome Shoko
    Division of Oral Dysfunction Science, Tohoku University Graduate School of Dentistry
  • Katoh Hiroaki
    Tohoku University Hospital, Dental Laboratory
  • Kikuchi Masahiko
    Division of Comprehensive Dentistry, Tohoku University Graduate School of Dentistry

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Other Title
  • 3Dプリンターを利用した新しいロストワックス鋳造法と従来法との鋳造性に関する比較研究
  • 3Dプリンター オ リヨウ シタ アタラシイ ロストワックス チュウゾウホウ ト ジュウライ ホウ ト ノ チュウゾウセイ ニ カンスル ヒカク ケンキュウ

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<p>Purpose: The purpose of the study was to evaluate the clinical usefulness of a new lost-wax casting process using additive manufacturing technology of vat photopolymerization (3D printer). The dimensional change and surface roughness of the casting were measured, and the result using this new method was compared with the conventional method.</p><p>Methods: The pattern samples were made of a newly developed resin especially for a 3D printer using additive manufacturing technology. In addition, the control samples were made of the inlay wax or pattern resin as a conventional method. Fabrication conditions of the casting were set to six conditions which were combined with investing materials and heating conditions. The dimensional accuracy of the sample was evaluated by the rate of dimensional change of the columnar sample before and after casting. The surface roughness of the sample after casting was evaluated by a non-contact-type surface roughness meter and a Scanning Electron Microscope (SEM).</p><p>Results: It was revealed that the dimensional change and surface roughness of the casting by the new lost-wax casting method using a 3D printer was equivalent to those by the conventional method, under certain conditions.</p><p>Conclusions: It was suggested that the new lost-wax casting method using a 3D printer was useful for the manufacture of dental prosthesis.</p>

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