This invention relates to novel dental compositions and methods for preventing dental plaque and caries formation and generally for inhibiting tooth decay and brightening/whitening teeth. The compositions of this invention comprise herbs such as Citrus karna raf., Zanthoxylum armatum D.C. and Azadirachta indica A. Juss. thereof which can be combined with pharmaceutically acceptable carriers or diluents to be administered in the form of conventional dental compositions. The compositions of the present invention, also preferably, contain Mint.