A burning sensation in mouth like you described can have several causes. Based on your details one possibility is Burning Mouth Syndrome (BMS - Neuropathic cause), but other causes should also be considered such as -
* Even when
sugar is controlled,
diabetes can sometimes cause mild neuropathy affecting oral nerves.
* Rare, but sometimes patients react to composite resin or bonding agents used in cosmetic fillings.
* Burning mouth can occur with deficiency of
Vitamin B12, Iron, or Folate.
Next Steps
* Check blood tests -
Vitamin B12
Iron /
Ferritin
Folate
HbA1c (for
diabetes control)
* Oral examination by a dentist - Check the filling area and rule out local irritation.
* Maintain oral moisture - Drink water frequently.
Health Tips
First rule out
vitamin deficiency and oral infection, then consider Burning Mouth Syndrome if everything is normal.