A dental filling is placed to close a hole in a tooth, or to repair a fractured tooth and restore it back to natural form and function.
When a tooth has decayed, the dentist cleans out the decay and creates a hole which is then plugged using a dental filling material.
There are various filling materials which can be used:
Sometimes, when the decay is deep or there has been tooth fracture, it can harm the nerve of the tooth. Despite the dentist’s best efforts, the nerve can die after a filling is done. This all depends on the health of the nerve initially, the patient’s age and other attributing factors.