Tooth coloured dental materials are widely used in dentistry due to their aesthetic results that matching the colour of natural teeth. Several products are available in the market and among the factor for selection is how far it could survive inside the mouth. Modern lifestyle exposed the community to variation of food and beverages including the erosive acidic food/drinks which will challenge the sustainability of the restorations in their mouth. This book explained scientifically what happen to few types of materials after certain time exposed to such erosive condition. It includes a thorough literature review and details of few related experiments. Many interesting photos including views by scanning electron microscope (SEM) and stereomicroscope were shown in this book to increase the visibility and understanding of what actually happen. This book will help the dental professionals, researchers, dental students, dental auxiliaries and anyone who is interested to know in real depth about erosion on tooth coloured dental materials.