What free dentistry work can I get on nhs if claiming jsa?

I am 21 and recently been made redundant and now claiming jsa. I have just registered with an nhs dentist,and basically want to get as much free treatments as possible. To get my teeth to as near perfect as can be. Does anybody know what things I can and can't get done? Also will a dentist want somebody like me who is open to as much work as can be done? Just trying to make the most of all the tax we pay. Any info will be grateful