Cold and hot pulp examination

Normal pulp does not feel pain at 20 ~ 50 ℃ near the mouth temperature. Cold water at 10 ~ 20 ℃ and hot water at 50 ~ 60 ℃ rarely cause pain. Therefore, cold stimulation below 10 ℃ is more than 60 ℃. For thermal stimulation. When the dental pulp has lesions, it may be sensitive or insensitive to cold and heat stimulation. Because of the possibility of several false reactions, its diagnostic value is relative. The control tooth must be tested first, and then the affected tooth must be tested, and a comprehensive judgment must be made in conjunction with other test results. Regardless of the cold diagnosis method or the hot diagnosis method, the test site should be 1/3 of the lip or buccal surface of the tooth, because the enamel is relatively complete and the response is comparable.

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