I've removed all my wisdom teeth at once few years back. the total cost is around 2000 bucks. my insurance covers 80 percent. if you don't have insurance... better to wait you go back to china.
UHIP won't cover any shit...
but what you can do is to do a xray scan on your wisdom teeth to see whether they have caused any troubles or not. that xray scan is about 60 bucks... so not that expensive. plus, if you tell them that you are a poor student, they usually lower the cost for you.