Subject choice

Ive just started S5 and received my national 5 results. I received all As but my lowest grade percentage was in maths 73% and I’m not sure if I should take psychology where I got 88% over it. My desired university course is dentistry which I know is competitive and maths looks good on a cv but idk if it’s worth taking higher maths to look competitive but then risk getting a b instead of just taking higher psychology and probably getting an A.
If I take psychology my subjects would be Chemistry Biology English PE Psychology.