It has long been reported in the literature that even if the proximal pulp is 0.4mm, as long as the temperature is reduced sufficiently, the patient is not sensitive even if he is not anesthetized. Taking drugs sensitive to dentin is absolutely ineffective. One more thing, why not make a temporary crown? After making a temporary crown, zinc oxide has a good soothing effect. If the temporary crown is still sensitive, the conditions are limited, and there is no enamel desensitizer, resin adhesive can be used as a desensitizing film temporarily.