Answers: The physician was right nearly the antibiotics (Clindamycin is another top choice) but not how it is treated by the dentist. If it is a permanent tooth, your option are either root strait or extraction after the antibiotics have taken effect. After 24 hours, you start getting nouns from Amoxil. The others can take in the order of 3 days.
The only means of access an abscess is "drained" is if it is a periodontal abscess, but you are asking about a dental abscess.
Usually amoxicillin, clarithromycin, or erythromycin. Sometimes others. If in attendance is an abcess, you will want your dentist to see it; often they hold to drain it to cure it.