I washaving atoothache i wastold by 1dds i needed a root canal i rejected& prescribed antibioticsanother dds told me thatpainwas normalcuzoffilling?

See endodontist: Second opinion is warranted in your case. You know how the old saying goes "2 dentists-5 opinions". Dental disease is irreversible and easy to diagnose. See another dentist or an endodontist (an expert in root canals) for definitive diagnosis and proper treatment. Be well.

Diagnosis: There are many possible reasons a tooth can hurt. You have to understand the source of the problem before you can select the correct treatment. Find a dentist you trust and go through the process to determine if a root canal treatment is appropriate. This isn't a simple cookbook process and you can participate by asking questions and following the logic of it.

Deep restoration: If you have a deep restoration, it may have affected the integrity and health of the nerve. Antibiotics are for infections for teeth where the nerve has died. Do you have a dead nerve? Then you need root canal therapy for sure. If the nerve is alive, then why the antibiotics? Since you're not sure of how to proceed, see a local endodontist who can better advise you. All the best...