R Shesha Prasad1, Anuradha Pai2. 1. Department of Oral Medicine and Radiology, The Oxford Dental College, Hosur Road, Bommanahalli, Bangalore, Karnataka, India. Electronic address: drsheshaprasad@gmail.com. 2. Department of Oral Medicine and Radiology, The Oxford Dental College, Hosur Road, Bommanahalli, Bangalore, Karnataka, India.