Train for DA, why? Because the cost, time and testing , finding a position with benefits and regular pay are what you want when you have finished with school...right? If you are concerned with your teeth...have them checked by your Dentist, get a prophy and present well. As said above , as long as you have a healthy mouth I don't see any problem. If you want to have some work done prior to entering a program for DA....visit a local DH program...you will save alot on exam (very thorough), X-rays, etc...and see if you can be refered to a Dental School for any restorative work....again, though, go for DA, if you read the many threads on here...DH , pay is going backwards, alot of money for the programs, that don't inform you of the "reality" of finding reg./set / work and ability to find any work for that matter. What's your present situation as far as your smile?