THE JOURNAL OF JAPANESE SOCIETY FOR DENTAL MATERIALS AND DEVICES
Online ISSN : 2188-417X
Print ISSN : 1884-4421
ISSN-L : 1884-4421
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  • Tatsushi KAWAI, Tatsuhide HAYASHI, Miki HORI
    Type: review-article-
    2021 Volume 40 Issue 2 Pages 147-152
    Published: May 25, 2021
    Released: June 22, 2021
    JOURNALS FREE ACCESS

    The hypothesis that machines will have intelligence surpassing that of humans in 2045 (Singularity) has been proposed, and human society is undergoing a major transformation due to the rapid development of artificial intelligence and machine technology. In order to cope with this era, programming education has been made compulsory in elementary schools since 2020. It is expected that all Japanese citizens will be required to acquire programming skills. The most urgent issue is how to develop human resources who can adapt to the coming era, not only in the dental field but all professionals. Solutions to this problem are:to learn a highly versatile programming language, understand the basics of mechanization technology based on this language, learn how to handle three-dimensional data, and understand the basic structure of artificial intelligence. This paper describes the kind of information technology that dentists, dental technicians, and dental hygienists, who will be involved in dental care in the near future, should be familiarized with, based on the current contents of information processing education.

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  • Naoyuki NOMURA
    Type: review-article
    2021 Volume 40 Issue 2 Pages 153-156
    Published: May 25, 2021
    Released: June 22, 2021
    JOURNALS FREE ACCESS

    Additive manufacturing (AM) has attracted much attention as new fabrication technology for metal and alloys. The concept of AM is based on layer-by-layer processing from lower to upper parts, which is different from subtractive manufacturing (e.g., lath cutting) where large material is shaped into smaller parts. AM has advantages of realizing unique designs not impossible with usual casting and lath cutting, and the yield of the material is high since the minimum necessary parts are selectively added by melting. The authors carried out a laser powder bed fusion process for a low magnetic Zr-1Mo alloy, and evaluated the microstructure and mechanical properties. In this paper, metal AM technology was reviewed and the relationship between processing parameters and the pore formation mechanism was introduced.

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