J Jayaraman1, S K Mallineni2. 1. School of Dentistry, International Medical University, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Kuala Lumpur, Malaysia. 2. Department of Paedodontics and Preventive Dentistry, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India. drmallineni@gmail.com.