P, D., M L , A., Anupama, Raja, J.V. and Diksha 2015. AGE ESTIMATION BY MEASURING OPEN APICES OF LOWER ERUPTED AND NON-ERUPTED PERMANENT TEETH AMONG 5-15 YEARS OLD - A DIGITAL ORTHOPANTOMOGRAPH STUDY. Medico Research Chronicles. 2, 5 (Oct. 2015), 633-643.