1. Maxillofacial Prosthetics Unit, School of Dental Sciences, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia
2. Prosthodontic Unit, School of Dental Science, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia
3. Department of Orthodontic, College of Dentistry, Al Jouf University, Sakaka, KSA