This book highlights the role of various types of biomarkers available for patients with Oral Squamous Cell Carcinoma. It gives a detailed knowledge about the role of these biomarkers in diagnosis, treatment planning, as well as prognosis. The oral biomarkers have a major role in screening, early diagnosis, and monitoring of cancer occurrence and progression. This book aims to help the readers to know about the clinical utility and need for practical application of biomarkers.