1. Department of Operative Dentistry, Altamash Institute of Dental Medicine, Karachi 75500, Pakistan
2. Department of Restorative Dentistry and Endodontics, College of Dentistry, King Faisal University, Al-Ahsa 31982, Saudi Arabia
3. Prosthodontics Unit, School of Dental Sciences, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kota Bharu, Kelantan, Malaysia
4. Department of Prosthodontics, Altamash Institute of Dental Medicine, Karachi 75500, Pakistan
5. Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka, Al Jouf 72345, Saudi Arabia