CAUSES hypersensitivity : WHITENING: professional whitening treatments or too aggressive toothpastes can weaken the tooth enamel; SHRINK GINGIVAL: inflamed gums recede to expose the dentin tubules, the hot and cold sensations are transmitted directly to the nerves; EROSION OF GLAZE: daily habits, such as intake of acidic foods and drinks, causing minor imperfections and scratches on the enamel; BRUXISM: Due to the grinding of teeth will produce major alterations of the enamel and consequently an increase in tooth sensitivity to hot and cold; ORTHODONTIC APPLIANCES: the use of very strong glue necessary to glue the plates of the appliance to the teeth can cause damage to the enamel of the teeth themselves. METHOD "FOR USE: For proper use, after brushing your teeth with toothpaste Biorepair Sensitive Teeth: 1. Apply the Sensitive Teeth Treatment on the inner surface of the bite 2. Place the bite inside the mouth and bite down. 3. Leave for 2-3 minutes. After removing the bite, rinse the mouth. IMPORTANT: The use of Biorepair® Desensitizing Treatment Repair-enamel is not recommended in case of hypersensitivity to one of the components. Ministerial authorization to advertising of 20.03.2015 It "a medical device CE. Read the warnings and instructions for use.