1. Consultant Oral and Maxillofacial Surgery, Guhwati, Assam, India.*
2. Consultant Oral and Maxillofacial Surgery, Patna, Bihar.
3. Postgraduate student, Department of Prosthodontics & Crown & Bridge, Vananchal dental college& hospital, Gharwa, Jharkhand.
4. Post graduate student, Department of Prosthodontics & crown and bridge, Institute of Dental Studies & Technologies, Modinagar, Uttar Pradesh, India.
5. Senior Lecturer, Department of Prosthodontics & crown and bridged. Dr. B. R. Ambedkar institute of dental sciences and Hospital. Patna, Bihar.
6. Postgraduate student, Department of Peridontology, Vananchal dental college& hospital, Gharwa, Jharkhand.