Advice antibiotics for pain due to dental caries?

No: Antibiotics will not reduce pain due to caries. Caries are caused by acid attacking the tooth. The pain is coming from structural compromise in the tooth leading to stimulation of the nerve inside the tooth. Now, if there is any kind of abscess in the bone or gums, then antibiotics are indicated. It would be best to have your dentist evaluate and treat the cavities.

Only temporary: Antibiotic use in dentistry can be helpful as a temporary fix until you can get definative treatment, either root canal or extraction or gum treatments. If we are uncertain if a tooth is infected an antibiotic that takes away the pain and when discontinued allows the pain to return is diagnostic for a tooth infection. Get the tooth fixed and the pain should go away.

Only if Infected!: The use of antibiotics for pain related to dental decay is only indicated if there is an infection associated with the decay. This is only a bandaid that will provide temporary relief until definitive treatment is done... In this case a root canal and crown or an extraction. Once a tooth is infected due to decay, a simple filling is insufficient!