Hello, Couple of months ago, a dentist did a filling for me. It was some kind of small tube, after filling it looks exactly like a part of tooth , same color. Now I moved to Italy, and here the temperature is too cold right now. I have this bad tooth / jaw ache. what could be the reason ? Temperature ? Also, I never had tooth ache until the day I started using Sensodyne tooth paste! a serious mistake! My private insurance doesnt cover dental problems. Are there any home remedies apart from warm water + salt ? Some thing that can help me for a few months.
Hello and welcome to Chat Doctor, toothache indicates bacterial decay or infection in the tooth that involves the exposed tooth nerve tissues.  Such infected tooth needs to be treated by a root canal procedure, so please consider getting the treatment done by consulting a dentist.  You may need an X RAY examination done for your teeth to confirm the spread of infection and the surrounding structures involved.  I would suggest you to start with antibiotic Augmenting 625 mg along with analgesics like diclofenac two times daily for 3 to 5 days.  Medications will help in subsiding the symptoms. I hope this helps, take care.