It is critical that you provide your dentist with an updated health history including any medications you are on, as well as vitamins and supplements.
They can assess your situation and give you the professional advice you need.
It is suggested to purchase dental wax over the counter at most pharmacies, in fact when the dentist installed the braces they probably gave you a small container of the wax for just such occasions.
An emergency tooth extraction is usually performed when an unexpected injury to the month has affected one or several teeth.
Source: Emergency Oral Surgeon is another matter entirely.
Find out if any dentists near you are open on Sundays, which ones provide 24-hour dental care, and what their fees are for emergency visits.