An antiplaque oral composition, such as a toothpaste, gel dentifrice, tooth powder, mouth-rinse or mouthwash, tooth hardener, anti-calculus composition, gum or lozenge, comprising a chelator (such as EDTA and its salts), and a transport enhancer (such as Methyl Sulfonyl Methane； MSM) are provided. Together, the combination of the two substances unexpectedly and beneficially removes dental plaque when brushed or applied on teeth and gums. Preferred compositions are toothpastes, gel dentifrices and mouth-rinses or mouthwashes. Also provided are processes of repeatedly applying such antiplaque oral compositions to the teeth to obtain the antiplaque benefits mentioned.
