Smile is an expression that can be pleasant, joyful, exhilarating or embarrassed, gleeful or winsome, haughty or hateful. It is a uniquely human gesture used to express what one is feeling. An eye-pleasing smile not only enriches the one who's smiling but also the one who is viewing it. It becomes vital for restorative dentists to take care of patients' desires and demands while recreating the smile form. The key lies in the harmony of the components of the oral region of the face and the oral cavity. This book shall therefore provide an insight into the basic smile anatomy followed by its components and affecting factors to elaborate analysis of the smile before and after any treatment.