Abstract
Dental and oral diseases are a costly burden to health care services. Worldwide the treatment of dental caries and oral disease is highly expensive. They cost between 5 and 10% of total health care expenses exceeding the cost of treating cardiovascular disease, cancer and osteoporosis. In low-income countries, the prevalence rate of dental caries is high and more than 90% of caries is untreated. Huge financial benefits can be gained from preventing oral and dental diseases by natural products. With the aim of developing alternative approaches to reduce or prevent the dental caries and oral diseases, numerous investigations showed those natural herbs, shrubs, and their derivatives largely being considered for therapeutic applications for the common oral and dental ailments. Among them, green tea, white mulberry, bloodroot, caraway and licorice are the most common herbs.