If you are starting to feel sensitivity in the back of your gums, then it is likely that your wisdom teeth may be decaying. Wisdom teeth do not serve many purposes because your molars are all you really need. When your wisdom teeth begin to come in, they can shift the entire alignment of your teeth. If yours have started to become sensitive and you are not sure if you should get them removed, then take a look at some signs that you need to have them extracted.
Dental crowns can only be effective when the tooth they're actually crowing has a solid foundation. Minor imperfections that might jeopardize the crown can easily be corrected, and this can involve using dental cement to fill cavities and blemishes. Sometimes the deterioration of the tooth is too extensive for these methods to have the necessary effect. In this case, your dentist might suggest a dental core restoration to build up the tooth, allowing it to have the required strength and size to be crowned.