The present invention relates to an oral composition and, more particularly, to an oral composition for alleviating tooth sensitivity. In particular, the present invention promotes an effect of alleviating sensitive teeth by comprising zinc and copper salts capable of coagulating proteins and thus sealing dentinal tubules in order to maintain the effect, water- or alcohol-soluble polymers are applied to dentinal tubules and maintained for a long period of time to thereby resolve underlying causes of sensitive teeth, whereby the present invention has an effect in preventing or alleviating symptoms of sensitive teeth in a short period of time. In addition, the oral composition according to the present invention comprises copper salt and zinc salt having a property of reacting with dentinal fluid to form a protein complex and comprises dicarboxylic acid or salts thereof reacting with inorganics such as calcium to form a complex so that symptoms of sensitive teeth can be efficiently prevented or alleviated in a short period of time by inducing the sealing of dentinal tubules and significantly improving the sealing effect. Furthermore, the oral composition according to the present invention comprises dicarboxylic acid and salts thereof having a property of forming a calcium complex in an oral cavity to induce sealing of dentinal tubules, and further comprises partially soluble calcium salt and/or phosphate salt to significantly increase the effect of the sealing of dentinal tubules so that symptoms of sensitive teeth can be efficiently prevented or alleviated in a short period of time.La présente invention concerne une composition buccale et, plus particulièrement, une composition buccale permettant datténuer la sensibilité dentaire. En particulier, la présente invention offre un effet datténuation des dents sensibles grâce au fait quelle comprend du sel de zinc et du sel de cuivre aptes à coaguler des protéines, et dainsi étanchéifier les tubules dentinaires afin de co
