### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I have been going to my dentist for ortho care: 6 month smile braces.  This weekend I have been having on/off pain on my left jaw.  I visited my dentist and she wants to inject my with Arestin, local antibiotic.  My pain is not localized.  She would not prescribe an oral antibiotic.  I have Keflex at home, can I start using it?  Arestin is for bacterial infection, but I feel I need a general antibiotic, not a localized one that is very expensive, and not covered by by insurance.  She wants to start doing 2 at a time. Please, guide me.

### output:

Hi. Welcome to Chat Doctor ... I have gone through your query and can understand your concerns. As per your complaint if you have pain in left jaw then first the cause for it needs to be known and then only any treatment can be given. As far as giving Ares tin is concerned it contains active ingredient Minocycline and is commonly used to treat gum infection, but you need to get confirmed first that you have an infection. Pain in jaw can be due to even other causes during orthodontic treatment that can be due to some disturbance with jaw joint, pain and pressure caused due to movement in teeth, gum infection due to improper cleaning etc. So as of now to relieve pain you can take painkillers like Ibuprofen. Take a soft diet. You can also revert me back by asking a direct question by going to my profile as I would need m ore details like the cause and need for giving antibiotic and some more questions that I can ask you for guiding you appropriately for how to proceed for the treatment. Hope this helps. Regards.