Dead pulp and living pulp teeth can be determined by color, temperature test, and electric vitality test of the pulp. Living pulp teeth appear slightly yellow, reactive to heat and cold, and have tingling symptoms in the electric vitality test; dead pulp tends to be greenish and grayish, unresponsive to heat and cold, and unresponsive to the electric vitality test.
1. Normal and viable natural permanent teeth are slightly yellowish and the color is the same as that of the adjacent teeth; while the color of the dead pulp can be greenish and grayish, and the color of the dead pulp is obviously different from that of the adjacent teeth at this time.
2. Temperature test is a method commonly used in clinical practice, which is generally divided into cold diagnosis and hot diagnosis. Cold diagnosis commonly used small ice stick, placed in the middle of the tooth near the buccal mucosa side, if the reaction with the control tooth is the same as normal, if there is no reaction may be dead pulp teeth; hot diagnosis commonly used dental glue stick, baked and softened placed in the same position with the cold diagnosis, the results of the judgment method is the same.
3. Pulp electric vitality test is to test the teeth with a special instrument, if the measured teeth appeared tingling symptoms, and the value of the selected control teeth value difference of not more than 10, it proves that the living pulp teeth; if the value of more than 80 have no reaction, it proves that the dead pulp teeth.
Warm reminder: the state of the tooth pulp needs to be judged by a professional dentist combined with the examination and clinical symptoms, do not blindly diagnose on your own.