When the pulp is diseased or injured it becomes weak. The most common causes of the pulp dying is a cracked tooth, a deep cavity, or traumatic injuries to the tooth.
Removing a tooth can create hazards. There are downsides to losing a natural tooth, because when a tooth is removed and not replaced, the nearest teeth may begin to shift from their normal position. This may cause the teeth to become crooked or crowded, which may cause biting and chewing to be more difficult. A replacement tooth ( or ) is usually more expensive than endodontic treatment and can involve more extensive dental procedures on nearby teeth.
Depending on the damage to a tooth, root canal may not always be an option. If a tooth is too damaged to repair, may be the only option.