1. A method of treating sensitive teeth comprising the steps of applying to the teeth, at least two successive applications, a composition comprising: a) at least one compound of formula I! M1-A-M2-B-M3 (I)! wherein M1 and M3 are independently a monovalent or divalent metal M2 is a polyvalent metal or metal oxide A and B are independently selected from the group consisting of C2-C6 dibasic, tribasic and tetrabasic acids and! b) at least one orally acceptable solvent ! where the application is carried out with an interval of not more than 12 hours.! 2. A method according to Claim. 1, wherein the composition is sequentially applied at least 7 times. ! 3. The method of Claim. 1 further comprising the step of contacting the teeth with the composition for at least 10 seconds at each application. ! 4. The method of claim. 3, wherein the composition is contacted with the teeth for at least 30 seconds at each application. ! 5. The method of claim. 1, wherein the compound of formula I is selected from the group consisting of potassium titanium oxide oxalate and potassium titanium oxide citrate and mixtures thereof. ! 6. A method of plugging the dentinal tubules of teeth comprising the steps of applying to the teeth, at least two successive applications, a composition comprising: a) at least one compound of formula I! M1-A-M2-B-M3 (I)! wherein M1 and M3 are independently a monovalent or divalent metal M2 is a polyvalent metal or metal oxide A and B are independently selected from the group consisting of C2-C6 dibasic, tribasic and tetrabasic acids and! b) contacting the teeth with the composition for at least 20 seconds, at which tubules1. Способ лечения повышенной чувствительности зубов, включающий стадии нанесения на зубы, по меньшей мере двух последовательных нанесений, композиции, содержащей:a) по меньшей мере одно соединение формулы IM1-A-M2-B-M3 (I)где M1 и M3 представляют собой независимо одновалентный или двухвалентный металл M2 представляет собой многовалентный метал
