You probably notice that you get more hangnails during the cold winter months. You might also notice that during the winter, your skin dries out really fast. Bingo! You've just hit on one of the main causes of hangnails. Anything that can dry out your skin, such as cold winter weather, harsh chemicals or frequent immersion in water can cause hangnails to develop.
It is not unusual for teeth to hurt after a filling or crown. If the filling is deep or near the nerve or pulp, the filling may ache or be sensitive for several days or weeks. When the cavity is close to the nerve, the body will build a layer of dentin over time to insulate itself from the pain transmitted to the nerve form the filling. Here are some usual reasons fillings will hurt after a tooth is filled: 1) Normal response to the trauma, this pain should subside in several days or weeks. 2) If the tooth hurts only when you bite, the filling may be too high, especialy if this in the first or only tooth you hit when you bite.
Chew slowly and bite lightly: Biting exerts tremendous pressure on the teeth, and this can make them very sore after you get a filling. When chewing your food, take your time and try not to bite all the way through; this will prevent your teeth from making forceful contact.