Hello! I had a root canal treatment done on my central incisor previously, however my tooth is getting progressively yellower with time, as my dentist said that the nerve inside is dead (or something along those lines). I will like to get a crown done for this tooth as the colour difference is getting very obvious, however, I also want to correct my slight overbite with braces/invisalign. Should I get a crown or braces first? What will be the cheapest way to go about doing this – to go to a polyclinic to get a referral / making an appointment with student dentists at NUH? In the event that I need to get my wisdom teeth extracted, where does this fit in time-wise with the crowning and braces (before or after crowning/braces)?

Will greatly appreciate advice on this, thank you!