*Chi-Hung Chen¹, Yung-Chung Chen^1,2 (1. School of Dentistry & Institute of Oral Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan, 2. Division of Prosthodontics, Department of Stomatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan)

*Sapaar Bayarmagnai¹, Baatarkhuu Battulga¹, Saruul Munkhbaatar¹, Anun Andsaikhan¹, Enkhjargal Tamir¹, Lkhagvajargal Enkhsuren¹, Oyunbaatar Bayarsaikhan¹, Misheel Boldbaatar¹, Purevjav Nyanrag¹ (1. Department of Prosthodontics, School of Dentistry, Mongolian National University of Medical Sciences )

*CHAKREE ONGTHIEMSAK¹, Chanya Chuenarrom¹, Kittiwara Pupong¹, Tanapat Jearanai¹, Manassanun Jearborwornnun¹, Nareerat Srihirundeth¹, Ornicha Dilokrattanaphichit¹ (1. Prince of Songkla University)

*Mamoru Yotsuya¹, Takahiro Kawasaki¹, Shota Kuroda¹, Motoya Fujiseki², Kazuhiro Umehara¹, Hideshi Sekine¹ (1. Tokyo Dental College Department of Fixed Prosthodontics, 2. Tokyo)

*Akikazu Shinya^1,2, Daisuke Miura¹, Yoshiki Ishida¹, Kentaro Nakajima¹, Satoru Watanabe¹ (1. The Nippon Dental University, 2. University of Turku)

*Daisuke Miura¹, Yoshiki Ishida¹, Kentaro Nakajima¹, Akikazu Shinya^1,2 (1. Department of Dental Materials Science, School of Life Dentistry at Tokyo, The Nippon Dental University, 2. Department of Prosthetic Dentistry and Biomaterials Science, Institute of Dentistry, University of Turku)

*Steven Tiopan¹, Haslinda Z Tamin¹, Indra Nasution², Ariyani Ariyani¹ (1. Faculty of Dentistry, Universitas Sumatera Utara, 2. Faculty of Engineering, Universitas Sumatera Utara)