The method of brushing teeth with vinegar to remove calculus is not feasible because calculus is a series of ingredients such as bacteria and salivary proteins mixed and deposited layer by layer as a calculus-like substance, and calculus is not an alkaline substance. It is impossible to remove it by means of consuming vinegar together with brushing. Clinically, sometimes the tartar will come off, or in rare cases, the toothpick or toothbrush will brush it off, or shave off the corresponding larger pieces of tartar, mostly when the tartar is already very large. But in fact, the real harm to the human body, located in the gingival sulcus of the calculus, sometimes very small, want to remove the calculus, the best way or to professional dental institutions for dental scaling treatment.