Tooth pain is not painful when you eat a popsicle refers to the more early stages of pulpitis, which is typically characterized by hot pain and cold relief. The so-called hot pain is when the teeth are stimulated by heat will feel severe pain, while the cold stimulation will have the phenomenon of toothache relief. The main reason for this is that the cold stimulus has a physical cooling effect on the surrounding area, which acts as a contraction. The early stage of endodontitis itself is the beginning of the inflammation of a stage of exudation, this time if the heat will be swollen, the pain will gradually aggravate, and cold local contraction, the corresponding pain will also be relieved. But this is only a temporary situation, with the further development of pulpitis will appear hot and cold stimulation will be severe pain, for this situation need to go to a professional dentist as soon as possible for dental root canal treatment.