After tooth desensitization treatment, attention should be paid to reducing mechanical stimulation and temperature stimulation, need to use less or eat less too hard food, such as bones, nuts, etc., because these foods will increase the wear of the teeth, wear will lead to the formation of desensitized layer on the surface of the teeth, for shedding or the formation of new sensitivity occurs. Some patients feel that the more times they brush their teeth, the better the dental oral hygiene can be maintained, but the increased number of brushing and the incorrect way of brushing may cause new damage to the teeth. So after desensitization try to reduce mechanical and physical stimulation, hot and cold stimulation, keep a more gentle intensity and consume milder foods.