Nutrients are the substances present in food which helps in the nourishment of the body tissues and are essential for the growth and development of the body. Without sufficient nutrients the body may not function optimally and severe inadequacy of these nutrients can lead to many diseases. Oral health and nutrition have a synergistic multi directional relationship. Zinc is a trace element of valuable importance which is present naturally in oral cavity at various sites such as dental plaque, dental hard tissues and saliva. Oral manifestations can be the presenting symptom for zinc deficiency, and thus a careful medical history and proper examination is critical to ensure that diagnosis and treatment are not delayed. This review appraises the biological functions of zinc and its role in oral health and in progression of various diseases.
