Should I be a dentist

I have been working in retail for a year and a bit now and I’m really not enjoying it anymore. I’m looking at my options for the future. I have been looking at what qualifications I need to be in the dentistry world (dentist) but I have no where near the qualifications that I need. All I have is an art GCSE and 2 qualifications that are as good as 2 a levels. I don’t know why but teeth really do interest me and I feel as if I do dental then I will be creating someone’s dream smile. I feel like in the long run that this will be good for me but right now I feel as if I won’t be able to achieve it as I have taken maths 4 times and failed because I was a few marks out