A toothache that hurts worse when broken with ice water is a symptom of pulpitis and requires root canal treatment. A toothache with ice water hurts worse when it breaks is a typical symptom of pulpitis when there is suppuration or partial necrosis, and is relieved by heat and cold. Mouth with cool water or ice can temporarily relieve the pain. Pain can be temporarily relieved by oral painkillers. However, painkillers are only a conservative treatment, and root canal treatment of the tooth is needed to completely cure the toothache. Pulpitis is the inflammation of the nerve of the tooth severe pain, such as nighttime pain aggravated by sleep, to the late stage of pulpitis pain without intermission, will also be scattered to the same side of the head and face pain. Therefore, the toothache with ice water a break pain more serious need to timely hospital consultation, root canal treatment of the teeth.