Shreya,
You have nothing to worry about, just stay calm and be yourself. The interview is a very informal laid-back and you will really enjoy yourself. The people are really nice and you will may get to meet the smartest dentist and dental student in the country! Lol! Hopefully he will be giving your tour! Just know why you want to be a dentist and what you have done to ensure dentistry is for you. The interview process hasn't change much so the old interview feedback is still current. If you have any specific questions p.m. me and i will be glad to tell you much more! Good Luck