. 2014 Sep 17;8(3):125–129. doi: 10.5681/joddd.2014.023
© 2014 The Authors; Tabriz University of Medical Sciences
This is an Open Access article distributed under the terms of the Creative Commons Attribution 3.0 License(http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Measurement of dye penetration to the long axis of the tooth.