visit to e dentist

went to visit the dentist ystdae..and my dentist have some, or particularly TWO comments..

1. my lower teeth..well, it seems to be ‘caving’ in. it is not as straight as it has owaes been..and my dentist didnt have any idea on y it happened, or how it happened.
2. upper back teeth, wisdom teeth, is growing in a weird, ‘crooked’ way. and my dentist is worried dat the teeth will start to decay and in the long term, will cause problems (such as gum disease n blahblahblah)

her suggestion?

wear braces- again.

dis tyme, upper and lower teeth..and according to her, its normal for ppl to wear braces more than once in their lifetime. and if i decide to wear braces again, it would be ‘transparent’ and wld be hooked behind my teeth instead of the front.  and the cost wld be $5000-$6000. wow.

and now, im still pondering..shld i? shld i not?