Few people look forward to visiting the dentist -- it can be an uncomfortable, but necessary, process. In the US, many people end up putting off their appointments due to anxiety or financial concerns, but in general everyone can agree dental hygiene is important, and dentists do incredibly important work. But how many of those procedures -- the root canals, the crowns and so on -- do you actually need? In today's episode, the guys dive into the Stuff They Don't Want You To Know about dentistry.