Ali Zakir Syed1, Aravind Parachuru Venkata2, Rui Amaral Mendes3. 1. Department of Oral and Maxillofacial Medicine and Diagnostic Sciences, Case School of Dental Medicine, Cleveland, Ohio, USA. 2. Department of Paediatric Dentistry, School of Dentistry, Dunedin, New Zealand. 3. Department of Oral and Maxillofacial Medicine and Diagnostic Sciences, Case Western Reserve University, Cleveland, Ohio, USA.