Funny you should mention dentistry. I fought the war on tooth decay in the US Air Force 1974, Austin, TX. I was an E-2 and my Captain the dentist I was assigned to was an original member of a band called 'The Four Frogs' at TSU whose mascot I think also was a frog, they actually cut a single. Anyhow I picked up a fair amount of dental knowledge from the experience if you should ever have any dental related questions. Keep in mind my job was limited to taking x-rays, mixing amalgam, cleaning instruments, operating the suction, serving coffee and filling out paperwork. I heard and saw a lot though.