Why does toothache after filling?

Many people will have this feeling. After a tooth is filled, they will have symptoms of tooth pain. There are many reasons for this phenomenon. If the filling is not done properly, it may cause the filling material to be damaged or fall off, which may cause this phenomenon. In addition, during the filling process, it will cause an overreaction of the dental nerves. At this time, when eating, if you encounter hot, cold, sour or sweet foods, it may cause symptoms of pain.

Causes of pain after tooth filling

1. The patch is missing or falling off

The defect or fall-off of filling materials after filling is more common in adjacent cavity fillings. The filling materials may fall off completely or be partially defective. The defect of the filling material may cause the tooth cavity or sensitive areas such as the pulp corner to be exposed, which will cause pain when stimulated by cold or hot food.

2. Causes of shedding

First find out why the patch is missing or falling off. If the tooth tip is too long, grind it. If the tooth cavity has no retention, retention should be made and root canal retention should be used if necessary.

3. Chemical irritation pain

Materials with chemical irritation include free monomers or unsaturated components in composite resins, carboxylic acids in glass ionomer cements, silicic acid in silicate cements, phosphoric acid in zinc phosphate cements, etc. During treatment, a pulp-soothing agent such as zinc oxide or calcium hydroxide should be inserted.

4. Pain from electric current stimulation

Patients who experience pain from electric current stimulation feel as if they were being electrocuted. The cause of this pain is generally believed to be due to simple silver-mercury alloy filling.

After a tooth filling, you should pay attention to the following aspects:

1. On the day of filling, you should avoid eating on the filled side, because most filling materials take some time to harden. Once the filling material has completely hardened, the tooth can continue to function as a chewer.

2. If you find that the filling is cracked or loose, you should see a dentist as soon as possible. Do not ignore it just because the tooth does not hurt. Otherwise, the hole will get bigger and you may still have a toothache.

3. Follow the doctor's advice and do not chew food or hard objects with the newly filled teeth. After a tooth is filled, you should generally chew food on the affected side on the 2nd or 3rd day to prevent the tooth from breaking and the filling from falling off.

4. If slight pain occurs after tooth filling, you can observe yourself first. Some slight discomfort and pain may disappear on its own. If the pain not only does not ease but worsens, or if biting pain, throbbing pain, pain from hot or cold stimulation, or spontaneous pain at night occurs, you should go to the hospital for follow-up examination and treatment in time to find out the cause and eliminate the pain.

5. For teeth with large areas of severe caries, tooth fractures are prone to occur during chewing due to insufficient resistance of the tooth itself after restoration. Therefore, after filling these teeth, the affected teeth should be protected with shell crowns in time according to the doctor's advice to prevent the crowns from breaking.