*Yuki Taniuchi1, Kenji Aoki1, Hiroshi Watanabe2, Koichiro Arai3, Natsumi Kobayashi1, Mineyo Sone1, Kazuhiko Okamoto1
(1. Division of Removable Prosthodontics, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, 2. Techspire Co., Ltd., 3. Hexagon D&E Systems Business Unit Technical)