The teeth themselves are not itchy, the feeling of itchy teeth refers to itchy gums, considering that it may be caused by tooth eruption, gingivitis, periodontitis. 1. Tooth eruption: If children have itchy teeth, it may be caused by the replacement of permanent teeth and the eruption of new teeth. 2. Gingivitis: If poor oral hygiene leads to plaque growth, it will cause gingivitis, and under the repeated stimulation of inflammation, itchy teeth can appear. 2. Periodontitis: The occurrence of periodontitis is usually related to plaque, food impaction, calculus and other factors. Inflammatory stimulation can appear itchy teeth, but also accompanied by swelling, pain and other manifestations. When the symptoms of itchy teeth can not be relieved on their own, you should go to the hospital in time to avoid disease progression.