. 2013 Apr-Jun;4(2):156–161. doi: 10.4103/0976-237X.114848
Copyright: © Contemporary Clinical Dentistry
This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.