1. Department of Prosthodontics, Faculty of Dental Medicine, Rangsit University, Pathumthani, Thailand
2. Department of Endodontics, Faculty of Dental Medicine, Rangsit University, Pathumthani, Thailand
3. Department of Oral Diagnostic Science, Faculty of Dental Medicine, Rangsit University, Pathumthani, Thailand
4. Division of Operative Dentistry, Faculty of Dentistry, Thammasat University, Pathumthani, Thailand
5. Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand