*Oyudari Tsengelsaikhan¹ (1. Department of Prosthodontics, School of Dentistry, Mongolian National University of Medical Science)

*Javkhlan Purevjav¹ (1. Department of Prosthodontics, School of Dentistry, MNUMS, 2. Department of Maxillofacial Surgery, School of Dentistry, MNUMS, 3. Department of Orthodontics, School of Dentistry, MNUMS, 4. School of Dentistry, MNUMS)

*Ryan Arya Pradhana¹, Linda S. Kusdhany¹ (1. Universitas Indonesia)

*Andry Sutrisman¹, Haslinda Z Tamin¹, Ariyani Ariyani¹ (1. Specialist Program in Prosthodontics, Faculty of Dentistry Universitas Sumatera Utara)

*Chopra Priyanka^1,2、Ravneet Kaur¹、Kavipal Singh¹、Takayuki Ueda² (1. Sri Guru Ram Das Institute of Dental Sciences & Research, Sri Amritsar、2. Department of Removable Prosthodontics and Gerodontology, Tokyo Dental College)