Oral diseases are the most prevalent chronic diseases worldwide, and a burden to health care services. It has taken over a century for dentistry to advance from the pioneering extension for prevention concept to a newer concept minimum intervention . The main types of enamel demineralization include incipient lesions" and surface-softened defect" which are the other names used to describe white spot lesions. This book describes in detail the etiology, diagnosis, and the various methods of its management.