1. Department of Public Health Dentistry, Thai Moogambigai Dental College and Hospital, Dr. M.G.R. Educational and Research Institute, Chennai 600107, Tamil Nadu, India
2. Department of Clinical Sciences, Centre of Medical and Bio-Allied Health Sciences and Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates
3. Department of Prosthodontics, Sree Balaji Dental College and Hospital, BIHER University, Pallikaranai, Chennai 600100, Tamil Nadu, India