I learnt Radiographic-record system and other supportive measurements to be taken to reach perfect diagnosis. I was so confident in my diagnosis that Dr. Balge the senior ENT specialist use to bring his team of medical students to my department to teach them marginal diagnostic difference between Sinusitis and peri-apical-dental pain, Perichoronitis and Pharyngitis – Tonsillitis, Last molar eruption pain and middle ear infection pain, Trigeminal Neuralgia and Neuritis.

Dr. Chopra was doing research & post graduation studies on “Changes in Oral Tissues” at various stages of foetus developments in mother's womb. Helping Dr. Chopra, for taking punch biopsy from oral mucosa & in taking Radiographic record I could see developing tooth-buds in jaw bone of foetus from 4 th month onwards.